Chapter A5. Section 6.4.A. Arsenic Speciation
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.
Citation Information
Publication Year | 2005 |
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Title | Chapter A5. Section 6.4.A. Arsenic Speciation |
DOI | 10.3133/twri09A5.6.4.A |
Authors | John R. Garbarino |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Techniques of Water-Resources Investigations |
Series Number | 09-A5.6.4.A |
Index ID | twri09A5.6.4.A |
Record Source | USGS Publications Warehouse |
USGS Organization | U.S. Geological Survey |