【摘要】 目的:建立工作场所空气中锡的氢化物发生-原子荧光光度测定方法。方法:按照《工作场所空气中毒物检测方法的研制规范》的要求进行实验室及现场实验。结果:本方法在5.6~300 ng/m l范围呈线性关系;样品处理后可保存48 h;方法重现性好,不同浓度标准溶液的相对标准偏差为0.88%~3.65%;样品加标回收率为95%~103%;方法的最低检出限为5.6 ng/m l;当采气量为75 L时,本法最低检测浓度0.037 mg/m3,方法选择性好。结论:此方法各项指标均达到《工作场所空气中毒物检测方法的研制规范》的要求,适用于工作场所空气中锡的监测。更多还原

【Abstract】 Objective:To establish a method for determination of air stannum in workplace by hydride generator-atomic fluorescence spectrometry.Methods:The samples were detected according to "Standardization of metholds for determination of poisonous substance in workplace" experimenting in lab and locale.Results:The methold exhibited a linear relation within 5.6~300 ng/ml,the samples could be stored for 48 h after disposal.Precision(RSD) was 0.88%~3.65%,recovery of spiked samples was 95%～103% and detection limit was 5.6 ng/ml.Concentration detection limit was 0.037 mg/m~3 while sample collection was 75 L.And the methold had good selectivity.Conclusion:This methold is conformed with the requirements of "Standardization of metholds for determination of poisonous substance in workplace".It is feasible for determination of air stannum in workplace.更多还原