连续测量水中挥发性有机物的膜进样单光子电离质谱仪的研制及其应用
文献类型：期刊论文
| 作者 | 崔华鹏; 侯可勇; 吴庆浩; 花磊; 陈平; 鞠帮玉; 李林; 王祯鑫; 李京华; 李海洋 |
| 刊名 | 分析化学
 |
| 出版日期 | 2010-01-01 |
| 卷号 | 38期号:5页码:760 |
| ISSN号 | 0253-3820 |
| 英文摘要 | A single photon ionization time of flight mass spectrometer with membrane inlet has been described and applied for on-line measuring volatile organic compounds (VOCs) in water. Automatic sampling, enrichment and measurement of VOCs were achieved by using a polyolimethyl siloxane (PDMS) membrane with a thickness of 50 mu m, a peristaltic pump and electric switch valve. There is almost no memory effect in the membrane inlet system. Single photon ionization processes were accomplished with photons of 10.6 eV emitted from a commercial low pressure discharge krypton lamp, and almost no free fragment was found in mass spectrum. Thus, it can be used for chemical compounds identification according to their molecular weight. The response times for benzene, toluene, xylene and chlorobenzene were all shorter than 100 s. The detection limit of benzene is 3 x 10(-9) (volume fraction), and an excellent linear response was observed in the range of 10 x 10(-9) (V/V) to 1 x 10(-6) (WV). The instrument was tested to analyze VOCs in the sewerage from a chemical plant, and more than twenty compounds of VOCs with concentration in 10 x 10(-9) (V/V) level were observed in 200 s. The results indicate that the single photon time-of-flight mass spectrometer with membrane inlet has a great application potential for on-line analyzing VOCs in water. |
| 语种 | 英语 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/175884]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 中国科学院大连化学物理研究所 |
| 推荐引用方式 GB/T 7714 | 崔华鹏,侯可勇,吴庆浩,等. 连续测量水中挥发性有机物的膜进样单光子电离质谱仪的研制及其应用[J]. 分析化学,2010,38(5):760. |
| APA | 崔华鹏.,侯可勇.,吴庆浩.,花磊.,陈平.,...&李海洋.(2010).连续测量水中挥发性有机物的膜进样单光子电离质谱仪的研制及其应用.分析化学,38(5),760. |
| MLA | 崔华鹏,et al."连续测量水中挥发性有机物的膜进样单光子电离质谱仪的研制及其应用".分析化学 38.5(2010):760. |
入库方式： OAI收割
来源：大连化学物理研究所
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