Chapter A5. Section 6.4.A. Arsenic Speciation

Garbarino, John R.

Abstract:

Two sample-processing methods (field speciation and laboratory speciation) used at the USGS National Water Quality Laboratory (NWQL) are specific to sample analysis by inductively coupled plasma-mass spectrometry (ICP-MS) for determining the concentration of inorganic and organic arsenic species in a water sample. The field-speciation method requires NWQL Schedule 1729. The laboratory-speciation method requires use either of NWQL Schedule 1730, 1731, or 1732, as appropriate for study objectives. For either the field- or laboratory-speciation method, prior knowledge is needed of sample matrix-composition characteristics (that is, major-ion concentrations in filtered samples). Major-ion data are necessary to determine (1) the volume of ethylenediaminetetraacetic acid (EDTA) that will be required for sample preservation, and (2) if sample dilution is required.

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USGS Numbered Series

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80040

Citation Author:

Garbarino, John R.

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Geological Survey (U.S.)

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Version 1.1

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ENGLISH

Citation Larger Work Title:

National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9

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Jan

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18 p.

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Geological Survey (U.S.)

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Techniques of Water-Resource Investigation

Citation Series Code:

TWRI

Citation Series Number:

09-A5.6.4.A

Citation Search Results Text:

Chapter A5. Section 6.4.A. Arsenic Speciation; 2005; TWRI; 09-A5.6.4.A; National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9; Garbarino, John R.