Record Display for the EPA National Library Catalog

RECORD NUMBER: 10 OF 100

OLS Field Name OLS Field Data
Main Title Atomic Absorption Spectrometric Determination of Arsenite in Water Samples by Graphite Furnace After Extraction with Ammonium sec-Butyldithiophosphate.
Author Chakraborti, D. ; Irgolic, K. J. ; Adams, F. ;
CORP Author Texas A and M Univ., College Station. Dept. of Chemistry.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-R-804774; EPA/600/J-84/097;
Stock Number PB84-244037
Additional Subjects Water analysis ; Water pollution ; Samples ; Extraction ; Chemical analysis ; Rivers ; Atomic spectroscopy ; Reprints ; Arsenite ; Arsonic acid/methyl ; Arsinic acid/dimethyl ; Water pollution detection ; Atomic absorption spectroscopy ; Graphite furnace atomic spectroscopy
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-244037 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 8p
Abstract
Arsenite - but not arsenate, methylarsonic acid, or dimethylarsinic acid - is extracted from water samples by 5 mL of a 0.01M hexane solution of sec-dibutylthiophosphate. A 10 microliters aliquot of the extract is injected into an atomic absorption spectrometer with a graphic furnace for the determination of arsenic. The calibration curve is linear to 1500 microgram As. Quantities of arsenic as low as 100 ng As (0.2 ppb As when contained in 500 mL) can be confidently determined. The method was tested with natural river water and synthetic river water. The relative standard deviations associated with the recoveries of arsenite from natural water and synthetic river water spiked with arsenite range from 4.8 to 8.0%. Ten to 15 arsenite determinations can be completed in 1 h.