ENVIRONMENTAL SAMPLING FOR TRACE ANALYSIS PDF



Environmental Sampling For Trace Analysis Pdf

Download [PDF] Environmental Sampling And Analysis For. environmental sampling for trace analysis Download environmental sampling for trace analysis or read online here in PDF or EPUB. Please click button to get environmental sampling for trace analysis book now., Get this from a library! Environmental sampling for trace analysis. [Bernd Markert; Wiley InterScience (Online service);] -- Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is ….

Environmental Sampling Analysis and Results Data Standards

Environmental Sampling Analysis and Results Data Standards. environmental sampling for trace analysis Download environmental sampling for trace analysis or read online here in PDF or EPUB. Please click button to get environmental sampling for trace analysis book now., cost-per-sample analysis for laboratories performing trace and ultra-trace analysis of heavy and toxic metals in drinking, ambient and wastewaters, and soil and sludges..

Environmental Sampling for Trace Analysis Edited by Bernd Markert 0 VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994 Environmental Sampling, Analysis and Results Data Standards Overview of Component Data Standards Standard No.: EX000001.1 January 6, 2006 This standard has been produced through the Environmental Data Standards Council (EDSC). The Environmental Data Standards Council (EDSC) is a partnership among EPA, States and Tribal partners to develop and agree upon data standards for environmental

This Sampling and Analysis Plan (SAP) guidance and template is intended to assist organizations in documenting the procedural and analytical requirements for one-time, or time- limited, projects involving the collection of water, soil, sediment, or other samples taken to Environmental Sampling for Trace Analysis Edited by Bernd Markert 0 VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994

Training. Trace analysis is extremely difficult. All too often, samples submitted as "routine" actually require highly skilled analytical chemists using complex … The sample pretreatment methods are constantly developing aiming to respond to the large variety of samples source and composition. For example, in order to preconcentrate toxic metals from liquid samples the most used methods are the extraction, based on extraction agents like chelates and ion

How to Cite. Zielinska, B. and Fujita, E. (1994) Organic Gas Sampling, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim The recognition of the importance and influence of the sampling and decomposition steps was one of the main advances of trace element research and analysis in the last two decades.

Rahman et al: DEVELOPMENT OF A METHOD FOR THE SPECIATION OF MERCURY IN ENVIRONMENTAL SAMPLE ANALYSIS 195 for mercury in water for human consumption. Training. Trace analysis is extremely difficult. All too often, samples submitted as "routine" actually require highly skilled analytical chemists using complex …

'Sample Handling and Trace Analysis of Pollutants' by Damia Barcelo is a digital PDF ebook for direct download to PC, Mac, Notebook, Tablet, iPad, iPhone, Smartphone, eReader - but not for Kindle. Environmental sampling is an integral part of the overall environmental data acquisition processes that include, but are not limited to, sample collection, preservation, preparation, instrumental analysis, field and laboratory quality assurance/quality control (QA/QC),

PDF Methods for the collection, preservation and storage of natural water samples for the analysis of trace levels of heavy metals have been critically reviewed, with particular reference to the Determination of metals is a major part of the work of environmental testing laboratories. EPA and DEP methodology releases provide information only for selected areas of metals sampling and analysis, and their language makes them unsuitable for teaching and training purposes.

Environmental Sampling for Trace Analysis Wiley Online Books

environmental sampling for trace analysis pdf

Environmental sampling for trace analysis (eBook 1994. This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample, edition of Soil Sampling and Methods of Analysis (Lewis Publishers, CRC Press, 1993) and also promoted the publication of the popular reference book Soil and Environmental Science Dictionary (CRC Press, 2001)..

Trace Analysis — Challenges and Problems

environmental sampling for trace analysis pdf

THE SAMPLING AND ANALYSIS OF HUMAN LIVERS NIST. Monitoring and Sampling Manual: Environmental Protection (Water) Policy. Brisbane: Department of Environment and Science Government. Acknowledgements The revision and update of this manual was led by Dr Suzanne Vardy, with the valued assistance of Dr Phillipa Uwins, Leigh Anderson and Brenda Baddiley. Thanks are given to many experts who reviewed and contributed to the documents relating … How to Cite. Pais, I. (1994) Trace Elements Need Trace Analysis, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527615872.ch3.

environmental sampling for trace analysis pdf


for Trace Element Analysis Robert M. Parr International Atomic Energy Agency, Vienna, Austria Accepted: October 24 1985 Sampling and sample preparation procedures are to a large extent determined by the analytical method used since different methods vary in the amount of material required for analysis and in how this is pre-treated before being introduced into the measuring … Environmental Sampling for Trace Analysis [Bernd Markert] on Amazon.com. *FREE* shipping on qualifying offers. Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors

ENVIRONMENTAL CHEMICAL ANALYSIS ANALYSIS Identification and Quantification Sampling 4. Preparation 5. Quantification 6. Evaluation 1. Definition: Defining the Analytical Question that needs to be solved Choosing the analyte/s that will answer the question E.g., heavy metal toxicity in shellfish amount of detergent in effluent value of precious metals in sediment the concentration of a Analysis of Heavy Metal Contaminated Soils Coby Wong1 and Xiangdong Li1* Abstract: Heavy metal contaminated soils can be a long-term environmental concern and potential financial liability to landowners. Hence, the assessment of heavy metal contaminated soil has received much attention in the last few decades. For a reliable and cost-efficient investigation, a well-planned sampling strategy

Analysis of Heavy Metal Contaminated Soils Coby Wong1 and Xiangdong Li1* Abstract: Heavy metal contaminated soils can be a long-term environmental concern and potential financial liability to landowners. Hence, the assessment of heavy metal contaminated soil has received much attention in the last few decades. For a reliable and cost-efficient investigation, a well-planned sampling strategy Environmental sampling is an integral part of the overall environmental data acquisition processes that include, but are not limited to, sample collection, preservation, preparation, instrumental analysis, field and laboratory quality assurance/quality control (QA/QC),

Trace Radiocarbon Analysis of Environmental Samples Ann E. Sheffield, Lloyd A. Currie, and George A. Klouda National Bureau of Standards Center for Analytical Chemistry Gas and Particulate Science Division Gaithersburg, MD 20899 1. Radiocarbon in the Environment In the atmosphere, radioactive `4C is produced at a roughly constant rate and decays with a half-life of 5730 y. Human activity trace and ultra trace analysis by using different sampling techniques including SPME and headspace with some modifications to overcome their natural limitations.

Get this from a library! Environmental sampling for trace analysis. [B A Markert;] -- Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is one of the first the environmental sampling e-course This intensive 32-module E-Course features comprehensive instruction on environmental sampling strategies, methods and equipment used for sampling soil, ground water, surface water, sediment and waste.

Abstract : Environmental sampling for trace analysis is divided into 4 parts: (1) historical aspects; (2) general aspects; (3) examples of sampling in air, water, soils and sediments, and plants and animals; (4) and a literature survey. for Trace Element Analysis Robert M. Parr International Atomic Energy Agency, Vienna, Austria Accepted: October 24 1985 Sampling and sample preparation procedures are to a large extent determined by the analytical method used since different methods vary in the amount of material required for analysis and in how this is pre-treated before being introduced into the measuring …

Trace Radiocarbon Analysis of Environmental Samples Ann E. Sheffield, Lloyd A. Currie, and George A. Klouda National Bureau of Standards Center for Analytical Chemistry Gas and Particulate Science Division Gaithersburg, MD 20899 1. Radiocarbon in the Environment In the atmosphere, radioactive `4C is produced at a roughly constant rate and decays with a half-life of 5730 y. Human activity How to Cite. Pais, I. (1994) Trace Elements Need Trace Analysis, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527615872.ch3

SAMPLE PREPARATION AND ANALYSIS H. Sandström1, S. Reeder2, A. Bartha4, M digestion before instrumental analysis, or a solid sampling technique such as X-ray fluorescence needs to be used. However, to address the needs of national and European level environmental authorities, information on leachable concentrations of the elements was also considered to be important. In environmental How to Cite. Pais, I. (1994) Trace Elements Need Trace Analysis, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527615872.ch3

Download [PDF] Environmental Sampling And Analysis For

environmental sampling for trace analysis pdf

Environmental Sampling for Trace Analysis overdrive.com. the environmental sampling e-course This intensive 32-module E-Course features comprehensive instruction on environmental sampling strategies, methods and equipment used for sampling soil, ground water, surface water, sediment and waste., Environmental Sampling for Trace Analysis Edited by Bernd Markert 0 VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994.

Damia Barcelo Sample Handling and Trace Analysis of

Environmental sampling for trace analysis PDF Free Download. How to Cite. Zielinska, B. and Fujita, E. (1994) Organic Gas Sampling, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, It covers all phases of data collection (planning, field sampling, laboratory analysis, and data quality assessment), and is a single source comprehensive reference for the resolution of the most common problems that environmental professionals face daily in their work. Why This Title This title is written in a clear and logical manner that is accessible to environmental professionals of all.

Rahman et al: DEVELOPMENT OF A METHOD FOR THE SPECIATION OF MERCURY IN ENVIRONMENTAL SAMPLE ANALYSIS 195 for mercury in water for human consumption. Training. Trace analysis is extremely difficult. All too often, samples submitted as "routine" actually require highly skilled analytical chemists using complex …

METHOD 1640 DETERMINATION OF TRACE ELEMENTS IN WATER BY PRECONCENTRATION AND INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY April 1997 U.S. Environmental Protection Agency Office of Water Office of Science and Technology Engineering and Analysis Division (4303) 401 M Street SW Washington, DC 20460. Method 1640 Acknowledgments Method 1640 was … SELENIUM SAMPLING AN0 ANALYSIS IN COAL COMBUSTION SYSTEMS Matthew S. DeVito and Rachel J. Carlson CONSOL Inc., Research & Development 4000 Brownsville Road Library, PA 15129 Keywords: Selenium, Coal Trace Analysis BACKGROUND The Clean Air Act Amendments of 1990 (CAAA) identified

Environmental Sampling, Analysis and Results Data Standards Overview of Component Data Standards Standard No.: EX000001.1 January 6, 2006 This standard has been produced through the Environmental Data Standards Council (EDSC). The Environmental Data Standards Council (EDSC) is a partnership among EPA, States and Tribal partners to develop and agree upon data standards for environmental analysis the usual pattern is this: participant laboratories are sent a portion of the effectively-homogeneous test material, and asked to determine speci c analytes, within prescribed uncer-

ICP-MS for Environmental Samples, Part One Regulations and Routine Monitoring An Executive Summary Environmental regulations and best practices for trace element analysis. Overview Inductively coupled plasma-mass spectrometry (ICP-MS) is one of the most powerful tech-niques used for elemental analysis in environmental applications. It provides the advantage of low detection … Environmental Sampling for Trace Analysis by Bernd Markert. ebook. Sign up to save your library. With an OverDrive account, you can save your favorite libraries for at-a …

DOWNLOAD ENVIRONMENTAL SAMPLING FOR TRACE ANALYSIS environmental sampling for trace pdf Office of the Science Advisor provides leadership in cross-Agency science and science policy. This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample

How to Cite. Pais, I. (1994) Trace Elements Need Trace Analysis, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527615872.ch3 This Sampling and Analysis Plan (SAP) guidance and template is intended to assist organizations in documenting the procedural and analytical requirements for one-time, or time- limited, projects involving the collection of water, soil, sediment, or other samples taken to

sample preparation for (1) analysis of radionuclides (including sediment dating using radionuclides such as Pb-210 and Cs-137) and (2) analysis of trace, minor and major elements using nuclear and related analytical techniques such as NAA, XRF and PIXE. Training. Trace analysis is extremely difficult. All too often, samples submitted as "routine" actually require highly skilled analytical chemists using complex …

Get this from a library! Environmental sampling for trace analysis. [Bernd Markert; Wiley InterScience (Online service);] -- Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is … Environmental Sampling, Analysis and Results Data Standards Overview of Component Data Standards Standard No.: EX000001.1 January 6, 2006 This standard has been produced through the Environmental Data Standards Council (EDSC). The Environmental Data Standards Council (EDSC) is a partnership among EPA, States and Tribal partners to develop and agree upon data standards for environmental

Get this from a library! Environmental sampling for trace analysis. [B A Markert;] -- Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is one of the first Environmental Sampling for Low-Level Trace Metals per EPA Method 1669 In an effort to achieve the ambient level detection limits for various metals required by the Clean Water Act, the US

Trace Radiocarbon Analysis of Environmental Samples Ann E. Sheffield, Lloyd A. Currie, and George A. Klouda National Bureau of Standards Center for Analytical Chemistry Gas and Particulate Science Division Gaithersburg, MD 20899 1. Radiocarbon in the Environment In the atmosphere, radioactive `4C is produced at a roughly constant rate and decays with a half-life of 5730 y. Human activity Environmental Sampling for Low-Level Trace Metals per EPA Method 1669 In an effort to achieve the ambient level detection limits for various metals required by the Clean Water Act, the US

It covers all phases of data collection (planning, field sampling, laboratory analysis, and data quality assessment), and is a single source comprehensive reference for the resolution of the most common problems that environmental professionals face daily in their work. Why This Title This title is written in a clear and logical manner that is accessible to environmental professionals of all This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample

How to Cite. Pais, I. (1994) Trace Elements Need Trace Analysis, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527615872.ch3 2 Environmental Sampling and Analysis This brochure provides a premier selection of proven tools and consumables that meet the needs of scientists who perform sample

cost-per-sample analysis for laboratories performing trace and ultra-trace analysis of heavy and toxic metals in drinking, ambient and wastewaters, and soil and sludges. SELENIUM SAMPLING AN0 ANALYSIS IN COAL COMBUSTION SYSTEMS Matthew S. DeVito and Rachel J. Carlson CONSOL Inc., Research & Development 4000 Brownsville Road Library, PA 15129 Keywords: Selenium, Coal Trace Analysis BACKGROUND The Clean Air Act Amendments of 1990 (CAAA) identified

The recognition of the importance and influence of the sampling and decomposition steps was one of the main advances of trace element research and analysis in the last two decades. Environmental Sampling For Trace Analysis by Bernd Markert / 2013 / English / PDF. Read Online 28.2 MB Download. Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is one of the first books to pay proper attention to representative sampling. It offers an overview of

PDF Methods for the collection, preservation and storage of natural water samples for the analysis of trace levels of heavy metals have been critically reviewed, with particular reference to the 2 2) Sampling of Water First there is an explanation of the different water samples, and the various types of vessels used for each sampling method are introduced along with notes on their usage.

This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample SAMPLE PREPARATION AND ANALYSIS H. Sandström1, S. Reeder2, A. Bartha4, M digestion before instrumental analysis, or a solid sampling technique such as X-ray fluorescence needs to be used. However, to address the needs of national and European level environmental authorities, information on leachable concentrations of the elements was also considered to be important. In environmental

Organic Gas Sampling Environmental Sampling for Trace

environmental sampling for trace analysis pdf

Environmental Sampling for Trace Analysis Wiley Online Books. SAMPLE PREPARATION AND ANALYSIS H. Sandström1, S. Reeder2, A. Bartha4, M digestion before instrumental analysis, or a solid sampling technique such as X-ray fluorescence needs to be used. However, to address the needs of national and European level environmental authorities, information on leachable concentrations of the elements was also considered to be important. In environmental, Environmental Sampling for Trace Analysis [Bernd Markert] on Amazon.com. *FREE* shipping on qualifying offers. Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors.

Proficiency testing of sampling rsc.org

environmental sampling for trace analysis pdf

Trace Analysis — Challenges and Problems. This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample Environmental Sampling for Trace Analysis by Bernd Markert. ebook. Sign up to save your library. With an OverDrive account, you can save your favorite libraries for at-a ….

environmental sampling for trace analysis pdf

  • Environmental Sampling Analysis Of Trace Organics Biology
  • Damia Barcelo Sample Handling and Trace Analysis of

  • This Sampling and Analysis Plan (SAP) guidance and template is intended to assist organizations in documenting the procedural and analytical requirements for one-time, or time- limited, projects involving the collection of water, soil, sediment, or other samples taken to How to Cite. Zielinska, B. and Fujita, E. (1994) Organic Gas Sampling, in Environmental Sampling for Trace Analysis (ed B. Markert), Wiley-VCH Verlag GmbH, Weinheim

    Environmental Sampling for Trace Analysis Edited by Bernd Markert 0 VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994 Sampling and Analysis of Scallops 3 The edible portion of scallops is normally considered to be the adductor muscle and the gonad but whole scallop tissue is known to be used in soups.

    Determination of metals is a major part of the work of environmental testing laboratories. EPA and DEP methodology releases provide information only for selected areas of metals sampling and analysis, and their language makes them unsuitable for teaching and training purposes. Environmental Sampling for Trace Analysis [Bernd Markert] on Amazon.com. *FREE* shipping on qualifying offers. Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors

    Environmental sampling for trace analysis Environmental sampling for trace analysis Maher, W.A. 1996-01-01 00:00:00 trends in analytical chemistry, vol. 15, no. 1, 1996 IX example of a typical UV detector for LC, the schematic diagram has two cells for UV detection, one for sample flow and the other for a referenceflow. The sample pretreatment methods are constantly developing aiming to respond to the large variety of samples source and composition. For example, in order to preconcentrate toxic metals from liquid samples the most used methods are the extraction, based on extraction agents like chelates and ion

    Determination of metals is a major part of the work of environmental testing laboratories. EPA and DEP methodology releases provide information only for selected areas of metals sampling and analysis, and their language makes them unsuitable for teaching and training purposes. It covers all phases of data collection (planning, field sampling, laboratory analysis, and data quality assessment), and is a single source comprehensive reference for the resolution of the most common problems that environmental professionals face daily in their work. Why This Title This title is written in a clear and logical manner that is accessible to environmental professionals of all

    Download Environmental Sampling for Trace Analysis or any other file from Books category. HTTP download also available at fast speeds. Environmental Sampling, Analysis and Results Data Standards Overview of Component Data Standards Standard No.: EX000001.1 January 6, 2006 This standard has been produced through the Environmental Data Standards Council (EDSC). The Environmental Data Standards Council (EDSC) is a partnership among EPA, States and Tribal partners to develop and agree upon data standards for environmental

    edition of Soil Sampling and Methods of Analysis (Lewis Publishers, CRC Press, 1993) and also promoted the publication of the popular reference book Soil and Environmental Science Dictionary (CRC Press, 2001). ICP-MS for Environmental Samples, Part One Regulations and Routine Monitoring An Executive Summary Environmental regulations and best practices for trace element analysis. Overview Inductively coupled plasma-mass spectrometry (ICP-MS) is one of the most powerful tech-niques used for elemental analysis in environmental applications. It provides the advantage of low detection …

    SOLID PHASE MICROEXTRACTION FOR TRACE ANALYSIS OF URINARY BENZENE IN ENVIRONMENTAL MONITORING and direct aqueous sample analysis with excellent sensitivity and good selectivity (Pawliszyn, 1997). Nowadays, among the most recommended techniques, SPME is employed for the extraction and preconcentration of volatile and semi-volatile compounds at trace … trace and ultra trace analysis by using different sampling techniques including SPME and headspace with some modifications to overcome their natural limitations.

    Abstract : Environmental sampling for trace analysis is divided into 4 parts: (1) historical aspects; (2) general aspects; (3) examples of sampling in air, water, soils and sediments, and plants and animals; (4) and a literature survey. the environmental sampling e-course This intensive 32-module E-Course features comprehensive instruction on environmental sampling strategies, methods and equipment used for sampling soil, ground water, surface water, sediment and waste.

    collection, processing, storage and analysis of human livers. Sampling protocols, handling procedures and Sampling protocols, handling procedures and analytical methods have been developed and implemented considering the requirements for valid analytical Determination of metals is a major part of the work of environmental testing laboratories. EPA and DEP methodology releases provide information only for selected areas of metals sampling and analysis, and their language makes them unsuitable for teaching and training purposes.

    This is one of the first books to pay proper attention to representative sampling. It offers an overview of the most common techniques used today for taking environmental samples. The techniques are clearly presented, yield accurate and reproducible results and can be used to sample It covers all phases of data collection (planning, field sampling, laboratory analysis, and data quality assessment), and is a single source comprehensive reference for the resolution of the most common problems that environmental professionals face daily in their work. Why This Title This title is written in a clear and logical manner that is accessible to environmental professionals of all

    collection of environmental samples for pesticide residue analysis. We suggest that this guide be supplemented with formal training courses in environmental monitoring. Other objectives, such as monitoring for compliance with California pesticide use regulations, may require sampling methods not included in this booklet. The materials and techniques described in this booklet are given so that The sample pretreatment methods are constantly developing aiming to respond to the large variety of samples source and composition. For example, in order to preconcentrate toxic metals from liquid samples the most used methods are the extraction, based on extraction agents like chelates and ion

    It covers all phases of data collection (planning, field sampling, laboratory analysis, and data quality assessment), and is a single source comprehensive reference for the resolution of the most common problems that environmental professionals face daily in their work. Why This Title This title is written in a clear and logical manner that is accessible to environmental professionals of all Environmental Sampling for Trace Analysis Edited by Bernd Markert 0 VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994

    trace and ultra trace analysis by using different sampling techniques including SPME and headspace with some modifications to overcome their natural limitations. Get this from a library! Environmental sampling for trace analysis. [Bernd Markert; Wiley InterScience (Online service);] -- Often too little attention is given to the sampling before and after actual instrumental measurement. This leads to errors, despite increasingly sensitive analytical systems. This is …

    The sample pretreatment methods are constantly developing aiming to respond to the large variety of samples source and composition. For example, in order to preconcentrate toxic metals from liquid samples the most used methods are the extraction, based on extraction agents like chelates and ion Rahman et al: DEVELOPMENT OF A METHOD FOR THE SPECIATION OF MERCURY IN ENVIRONMENTAL SAMPLE ANALYSIS 195 for mercury in water for human consumption.