Record Display for the EPA National Library Catalog


Main Title Arsenic determination by the silver diethyldithiocarbamate method and the elimination of metal ion interferences /
Author Sandhu, Shingara S.,
CORP Author Claflin Coll., Orangeburg, SC.;Environmental Monitoring and Support Lab.-Cincinnati, OH.
Publisher Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory, For sale by the National Technical Information Service.
Year Published 1978
Report Number EPA-600/4-78-038; EPA-R-8041640-01
Stock Number PB-288 153
OCLC Number 04326717
ISBN pbk.
Subjects Arsenic--Analysis
Additional Subjects Arsenic ; Water analysis ; Metals ; Chemical analysis ; Water pollution ; Ion exchanging ; Concentration(Composition) ; Distillation ; Water pollution detection ; Silver diethyldithiocarbamate method ; Procedures
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-4-78-038 Headquarters Library/Washington,DC 12/03/2012
EJED  EPA 600/4-78/038 OCSPP Chemical Library/Washington,DC 03/25/2005
ELBD  EPA 600-4-78-038 AWBERC Library/Cincinnati,OH 08/21/2019
ESAD  EPA 600-4-78-038 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-288 153 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 26 pages : illustrations ; 28 cm.
The interference of metals with the determination of arsenic by the silver diethyldithiocarbamate (SDDC) Method was investigated. Low recoveries of arsenic are obtained when cobalt, chromium, molybdenum, nitrate, nickel or phosphate are at concentrations of 7 mg/l or above (individually or collectively). A positive interference is obtained when the concentration of antimony is 0.3 mg/l or above and the concentration of mercury is 1.5 mg/l or above. Prevention of antimony and mercury interference was found to be possible by removal with an ion exchange resin. Potassium permanganate digestion at 35C was found to be reliable.
Grant no. R 804164-01. Report prepared by Claflin College, Orangeburg, South Carolina. Issued July 1978. Includes bibliographical references (pages 24-25) .
Contents Notes
Several metal ions--chromium, cobalt, copper, mercury, molybdenum, and antimony--have been reported to interfere in the determination of arsenic in water and waste water by the Silver Diethyldithiocarbamate (SDDC) method, but the limit of interference by each ion has never been precisely evaluated. Conflicting reports have also appeared in the literature on the role of chromium and antimony as interfering ions in this method. The present study was undertaken to resolve the confusion that surrounds the use of the SDDC method for the determination of arsenic in water and waste water.