[Determination of hydrogen selenide in workplace air with atomic fluorescence].
OBJECTIVE
To determined hydrogen selenide in workplace air with atomic fluorescence.


METHODS
Hydrogen selenide were sampled with 0.1 mol/L sodium hydroxide solution in multi-hole absorbing tubes. The sampled absorbing solution were digested with (9+1) nitric acid/perchloric acid. The selenide in sample were reduced by potassium borohydride in 5.0% hydrochloride solution and determined with atomic fluorescence.


RESULTS
There was a good linearity (r=0.9999) over the concentration of 0-150 microg/L, The precision of low, middle and high concentration were 3.1%, 7.4% and 6.7%, respectively. The sample collection rate can reach 99%.


CONCLUSIONS
The method was accurate and sensitive to detect hydrogen selenide in workplace air.
Henan Institute of Occupational Medicine, Zhengzhou, 450052, China.
Wen-hua
WH
Qin
Yan-yan
YY
Lu
Qi
Q
Geng
D000395:Air Pollutants, Occupational / Q000032:analysis*; D018036:Selenium Compounds / Q000032:analysis*; D013050:Spectrometry, Fluorescence; D013054:Spectrophotometry, Atomic; D017132:Workplace
D000395:Air Pollutants, Occupational; D018036:Selenium Compounds; C026372:hydrogen selenide