2008•Chinese Journal of Public Health EngineeringRequires access
Determination of Trace Barium in Drinking Water by Graphite Furnace Atomic Absorption Spectrometry
Liu Ton
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Abstract
Objective To establish a method for determination of trace barium in drinking water by graphite furnace atomic absorption spectrometry with lanthanum-coated graphite tube.Methods Trace barium in drinking water was determined by graphite furnace atomic absorption spectrometry with lanthanum-coated graphite tube using magnesium nitrate as matrix modifier and nitric acid as media.Results The recovery was from 90.0% to 106.7%.The calibration graph linear was 10-1000 μg/L for barium with a correlation coefficient of not less than 0.999 7,and the relative standard deviation was less than 7.7%(n=6).Conclusion The method is linear widely with good precision,and the interference of memory for barium is excluded.It has been successfully applied to the determination of barium in drinking water.