摘要
目的 建立工作场所空气中硒化氢的原子荧光光谱测定法.方法 以装有0.1 mol/L氢氧化钠溶液的多孔玻板吸收管吸收硒化氢,硝酸和高氯酸（9＋1）消化处理,在5.0％盐酸介质中,以硼氢化钾为还原剂使其还原为硒化氢,原子荧光光谱法测定硒含量.结果 硒在0～150 μg/L范围内线性良好,相关系数为0.999 9,方法检出限为0.1 μg/L,低、中、高浓度硒溶液精密度分别为3.1％、7.4％和6.7％.采样效率为99％以上.结论 该方法精密度和灵敏度较高,可以满足工作场所空气中硒化氢的测定.
Objective To determin hydrogen selenide in workplace air with atomic fluorescence.Method 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/percloric 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=0.999 9） over the concentration of 0～150 μg/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%.Conclusion The method was accurate and sensitive to detect hydrogen selenide in workplace air.
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
北大核心
2012年第2期144-145,共2页
Chinese Journal of Industrial Hygiene and Occupational Diseases
关键词
光谱法
原子荧光
硒化氢
空气
Atomic fluorescence spectrometry
Hydrogen selenide
Air, workplace
