| 膜萃取-微扑集/气相色谱-质谱测定小体积水样中痕量苯系物的方法 |
| 摘要点击 542 全文点击 1320 投稿时间：1998-08-19 |
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| 中文关键词 膜萃取－微捕集 气相色谱－质谱 环境水 苯系污染物 |
| 英文关键词 Membrane Extraction-Microtrap Gas Chromatography-Mass Spectrometer benzene-substituted pollutants water samples |
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| 中文摘要 |
| 用膜萃取-微捕集/气相色谱-质谱(ME-MT/GC-MS)分析方法,分别测定了环境地表水、工厂排污水、饮用水和汽油等样品中痕量苯、甲苯和二甲苯等有机污染物。结果表明,膜萃取-微捕集回收率为89%～99%,相对标准偏差为1.16%～3.60%,采样体积为5μl～2.0ml,研究测定范围为1ng～120ng,最低检出限为0.05ng/g～0.1ng/g.ME-MT/GC-MS分析方法具有采样体积小、样品基体干扰小、无溶剂处理和可在线操作等特点。ME-MT装置具有体积小、重量轻、操作简便、性能稳定可靠和适用性强等特点,在各类环境水样品中挥发性有机污染物测定方面具有重要的实用价值。 |
| 英文摘要 |
| In this paper an analytical method of the Membrane Extraction Microtrap/Gas ChromatographyMass Spectrometer(MEMT/GCMS)for determination of trace pollutants benzene substituted from a small volume of water sample was researched.The experimental results showed that the recoveries of benzene,toluene,m,pxylene and oxylene were 89%～99%,and the RSDs of them were 1.16%～3.6%,and the sampling volumes of them were 0.005～2.00ml,and the experimental concentrations of them mainly were 0.5～60g/L,and the low detection limits of them were 0.05～0.1ng/g.The application results also showed that the ME-MT/GC-MS method was a very promising,easy to handle,low cost,no solvent required,detection limits at ppt level when a small volume of water sample was analysed and measured. |
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