| 摘要: |
| 根据PM2.5中重金属监测国标分析方法，从PM2.5采样方法、采样保存条件、滤膜材质性能等方面说明利用空气自动采样滤膜监测PM2.5中铅和镉是可行的；对手工采样（石英滤膜）和Beta射线法自动采样（自动采样滤膜）2种方法，对PM2.5实际样品中铅和镉的结果进行比较，结果显示：自动采样滤膜的空白检出和检出限均满足铅和镉的监测需求，铅和镉的回收率分别为95.2%~107% 和91.8%~105%，与手工采样方法相比测得铅和镉的相对误差分别为3.6%~8.4%和1.3%~10.8%，从实践角度进一步证明了利用自动采样滤膜对PM2.5中铅和镉进行监测是可行的。 |
| 关键词: 自动采样滤膜 可入肺颗粒物 铅 镉 |
| DOI： |
| 分类号:X831 |
| 基金项目:江苏省监测科研基金资助项目（1321） |
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| Feasibility Analysis on Using Automatic Sampling Filter Membrane for Monitoring Pb and Cd in PM2.5 |
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ZHANG Xianbao， GENG Yongchao， HUANG Jing
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Zhenjiang Environmental Monitoring Central Station， Zhenjiang， Jiangsu 212001， China
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| Abstract: |
| According to the national standard of analysis method for heavy metals in PM2.5， several factors， such as sampling method， sample preservation condition and filter material property， were used to demonstrate the feasibility of using air automatic sampling filter membrane for monitoring Pb and Cd in PM2.5. Two sampling methods， which were manual sampling (quartz filter) and automatic Beta ray sampling (automatic sampling filter)， were compared for the determination of Pb and Cd in PM2.5. The results showed that the blank sample and the detection limit of automatic sampling filter both satisfied the monitoring need of Pb and Cd. The recoveries for Pb and Cd were 95.2%~107% and 91.8%~105%， respectively. For the manual sampling method， the relative errors for Pb and Cd were 3.6%~8.4% and 1.3%~10.8%， respectively. The results further demonstrated from the practical perspective， that it was feasible to use air automatic sampling filter membrane for monitoring Pb and Cd in PM2.5. |
| Key words: Automatic sampling filter membrane PM2.5 Pb Cd |
