USGS - science for a changing world

National Water Quality Laboratory

Friday December 15, 2017

U.S. GEOLOGICAL SURVEY Open-File Report 93-664

Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory - Determination of Antimony by Automated-Hydride Atomic Absorption Spectrophotometry

By Glenda E. Brown and Betty J. McLain

The analysis of natural-water samples for antimony by automated-hydride atomic absorption spectrophotometry is described. Samples are prepared for analysis by addition of potassium persulfate and hydrochloric acid followed by an autoclave digestion. After the digestion, potassium iodide and sodium borohydride are added automatically. Antimony hydride (stibine) gas is generated, then swept into a heated quartz cell for determination by atomic absorption spectrophotometry.

Precision and accuracy data are presented. Results obtained on Standard Reference Water Samples agree with means established by interlaboratory studies. Spike recoveries for actual samples range from 90 to 114 percent. Replicate analyses of water samples of varying matrices give relative standard deviations from 3 to 10 percent.

VIEW the report. (pdf)


Adobe ® Portable Document Files (pdfs), Microsoft Powerpoint ® Files and Other Sites Open in a New Window

NELAC logo TNI logo NWQL logo

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://nwql.usgs.gov/rpt.shtml
Page Contact Information: NWQL LabHelp
Page Last Modified: Sunday, 16-Apr-2017 19:55:12 MDT