摘要
目的建立工作场所空气中铁及其无机氧化物的检测方法。方法工作场所气溶胶态的铁及其无机氧化物用滤膜收集器采集，经电热消解仪消解后，用原子吸收分光光度计法（AAS）或电感耦合等离子体发射光谱法（ICP-OES）进行测定。结果工作场所空气中气溶胶态的铁及其无机氧化物，采用混合纤维素微孔滤膜进行样品采集的效率〉97%；原子吸收分光光度计在372.0 nm波长下，方法测定范围为1.0~150 μg/ml，方法最低定量浓度为0.28 mg/m3，方法最高定量浓度为6.24 mg/m3，加标回收率为99%~102%，批内精密度为0.5%~1.2%，批间精密度为1.0%~2.2%；采用电感耦合等离子体发射光谱法，方法测定范围为0.1~500 μg/ml，方法最低定量浓度为0.28 mg/m3，方法最高定量浓度为20.8 mg/m3，加标回收率为101%~103%，批内精密度为0.5%~1.0%，批间精密度为1.5%~1.6%。结论样品采集和实验室检测方法研究结果均符合分析方法要求，适用于工作场所空气中铁及其无机氧化物的采集和测定。
ObjectiveTo establish the method for determination of iron and its inorganic oxide in the air of workplace.MethodsThe iron and its inorganic oxide was collected by MCE filter membrane and then digested by electric heating digestion apparatus. Atomic absorption spectrophotometer （AAS） or inductively coupled plasma optical emission spectrometry （ICP-OES） was used for the detection of iron and its inorganic oxide.ResultsThe sampling efficiency was higher than 97%; under the 372.0 nm wavelength, the linearity of AAS was good at the range of 1.0~150.0 μg/ml, the minimum quantitation concentration was 0.28 mg/m3, the maximum quantitation concentration was 6.24 mg/m3, the recovery was ranged from 99%~102%, the RSD of intra-and inter-batch precision were 0.5%~1.2% and 1.0%~2.2%, respectively; the linearity of ICP-OES was good at the range of 0.1~500 μg/ml, the minimum quantitation concentration was 0.28 mg/m3, the maximum quantitation concentration was 20.8 mg/m3, the recovery was ranged from 101%~103%, the RSD of intra-and inter-batch precision were 0.5%~1.0% and 1.5%~1.6%, respectively.ConclusionThe sampling method and determination method meet the requirements of analysis and apply to the collection and determination of iron and its inorganic oxide in the air of workplace.
作者
宋爽
李海斌
潘兴富
闫慧芳
Song Shuang Li Haibin Pan Xingfu Yan Huifang(National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China)
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
2017年第5期389-393,共5页
Chinese Journal of Industrial Hygiene and Occupational Diseases
关键词
工作场所
空气污染物
职业性
分光光度法
原子吸收
Workplace
Air pollutants, occupational
Spectrophotometry, atomic absorption
