原子荧光光谱法测定环境空气中痕量锡  

Determination of Trace Tin in Ambient Air by Atomic Fluorescence Spectrometry

作　　者：乐驰[1] Le Chi(Shanghai Changning District Environmental Mmonitoring Station,Shanghai, 20005)

机构地区：[1]上海市长宁区环境监测站,上海200052

出　　处：《现代科学仪器》2017年第5期106-108,129,共4页Modern Scientific Instruments

摘　　要：建立了微波消解一原子荧光光谱法测定环境空气中锡的方法，以硝酸和双氧水为消解体系，消解温度为160℃。实验结果表明，在0～15Hg／L浓度范围内锡线性关系良好，样品加标回收率在94．2％～104．0％间，5份不同浓度样品的锡测定结果的相对标准偏差均小于5％，当采集环境空气为600L，定容体积为50mL时，环境空气中锡的最低检出浓度为0．01μg／m3。本方法前处理具有操作简单、酸用量少、消解完全、低空白等优点，适用于空气中微量锡的测定。A microwave digestion - atomic fluorescence spectrometry method was developed for the determination of tin in ambient air, nitric acid and hydrogen peroxide were as digestion system, decomposition temperature is 160 ℃. The experimental results showed that tin linear concentration range is good in 0 - 15μg/L, the standard addition is in between 94.2% - 104.0%, the recovery of sample of 3 samples of different concentration of tin the determination results of relative standard deviation less than 3%. When collecting ambient air is 600 L, constant volume size of 50 ml, tin the lowest detection concentration in the ambient air is 0.01 μg/m3. The pretreatment method has simple operation, less dosage of acid, digestion, and the advantages of low blank, it is suitable for the determination of trace tin in the air.

关 键 词：微波消解 原子荧光法 环境空气 锡 

分 类 号：TH74[机械工程—光学工程]