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Chapter A5. Processing of water samples
The National Field Manual for the Collection of Water-Quality Data (National Field Manual) describes protocols and provides guidelines for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation's surface-water and ground-water resources. This chapter addresses methods to be used in processing water samples to be analyzed for inorganic and organic chemical substances, including the bottling of composite, pumped, and bailed samples and subsamples; sample filtration; solid-phase extraction for pesticide analyses; sample preservation; and sample handling and shipping. Each chapter of the National Field Manual is published separately and revised periodically. Newly published and revised chapters will be announced on the USGS Home Page on the World Wide Web under 'New Publications of the U.S. Geological Survey.'
Table of Contents
- Abstract
- Introduction
- A5. Processing of Water Samples
- Conversion factors, selected terms, abbreviations, and chemical formulas
- Selected references and internal documents
- Publications on Techniques of Water-Resources Investigations
- Appendix A5-A. Sample-designation codes and a summary of field-processing requirements for analyses of organic compounds in water
- Appendix A5-B. Sample-designation codes and a summary of field-processing requirements for analyses of inorganic constituents in water
- Appendix A5-C. Sample-designation codes and a summary of field-processing requirements for analyses of stable isotopes and radiochemicals in water
- Appendix A5-D. Procedures for processing samples for analysis of dissolved and suspended organic carbon using a silver filter and gas-pressurized filtration apparatus
