Determination of hydrogen selenide in workplace air with atomic fluorescence / 中华劳动卫生职业病杂志

ABSTRACT

<p><b>OBJECTIVE</b>To determined hydrogen selenide in workplace air with atomic fluorescence.</p><p><b>METHOD</b>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.</p><p><b>RESULTS</b>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%.</p><p><b>CONCLUSION</b>The method was accurate and sensitive to detect hydrogen selenide in workplace air.</p>