USGS Test Method I-3055

Method information displayed is provided for informational purposes only.
ALS - Columbia may or may not offer methods shown. Please contact us to learn about ALS - Columbia's latest available methods. No warranty (express or implied) is made as to the website accuracy, completeness, or applicability (such as the age of a method and whether or not it applies to your project).

Analytical testing dots

PDF IconView Actual USGS Method I-3055 (PDF File)


Method Name:
Antimony, total, water, hydride _AA. Official Name: Antimony, atomic absorption spectrometric, hydride

Organic antimony-containing compounds are decomposed by adding sulfuric and nitric acids and by repeatedly evaporating the sample to fumes of sulfur trioxide. The antimony so liberated, together with inorganic antimony originally present, is subsequently reacted with potassium iodide and stannous chloride, and finally with sodium borohydride to form stibine. The stibine is removed from solution by aeration and swept by a flow of nitrogen into a hydrogen diffusion flame, where it is determined by atomic absorption at 217.6 nm.

This method may be used to analyze water and water-suspended sediment containing at least 1 ug/L of antimony. Samples containing more than 15 ug/L need to be diluted. Total antimony in water-suspended sediment may be determined after each sample has been thoroughly mixed by vigorous shaking and a suitable sample portion has been rapidly withdrawn from the mixture.

Methods for the Determination of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the United States Geological Survey, Book 5, Chapter A1 Edited by Marvin J. Fishman and Linda C. Friedman

Since the stibine is freed from the original sample matrix, interferences in the flame are minimized. Selenium and arsenic, which also form gaseous hydrides, do not interfere at concentrations of 100 ug/L. Greater concentrations were not tested.

QC Requirements:
Calibrate instrument using calibration standards (CAL). Quality control samples (QCS) and laboratory blanks (LB) analyzed at a minimum of I each after every 10 samples. (Reference OFR 95-443).

Maximum Holding Time:
180 days



1-15 ug/L


Minimum reporting level

Revision Number:
Revised 1985

Analytical testing dots

Related Methods:
Test Method 500001    Test Method 500007    Test Method 500021    Test Method 500061    Test Method 500071    Test Method 500076    Test Method 500081    Test Method 500086    Test Method 500090    Test Method 500201   

<-- Search again

*Method information displayed is provided as a convenience only. No warranty (express or implied) is made as to its accuracy, completeness, or applicability (such as the age of a method and whether or not it applies to your project).

Suggestions? The test methods page continues to expand and improve. If you have suggestions for improvement, we would enjoy hearing from you. Please contact the webmaster here.

Analytical testing dots