| 环境水系统中氯氟烃替代品降解产物TFA的测定 |
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| 引用本文： | 项徐伟,吴鹏,沈志群.环境水系统中氯氟烃替代品降解产物TFA的测定[J].中国环境监测,2009,25(1):44. |
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| 作者姓名： | 项徐伟 吴鹏 沈志群 |
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| 作者单位： | 南通市环境监测中心站,江苏南通,226001 |
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| 摘 要： | 三氟乙酸为氯氟烃替代品的降解产物,对植物和土壤微生物群落的生长有一定抑制作用.建立测定TFA质量浓度的实验方法,将样品中的三氟乙酸与甲醇在硫酸溶液中衍生化为三氟乙酸甲酯(MTFA),利用三氟乙酸甲酯的易挥发性,以顶空进样进行富集浓缩.使用质谱定性手段确定出峰时间,再通过电子捕捉检测器ECD对实际样品进行分析.仪器检测限为30μg/L,方法检出限约为30ng/L,加标回收率60%～90%.
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| 关 键 词： | 三氟乙酸 氯氟烃替代品 顶空进样 气相色谱 |
| 修稿时间： | 1/5/2007 12:00:00 AM |
Analysis Method of TFA in Water System |
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| XIANG Xu-wei,et al.Analysis Method of TFA in Water System[J].Environmental Monitoring in China,2009,25(1):44. |
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| Authors: | XIANG Xu-wei |
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| Institution: | Nantong Environmental Monitoring Centre;Nantong 226001;China |
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| Abstract: | This study focused on the influence of blank test during the phthalic acid esters analysis of soil.GC-MS examined six main kinds of phthalic acid esters through each step during the entire process.The experiment indicated that DEP,DBP,DEHP made a bigger influence on the blank value than the others,the reagent in this method is the main reason of high blank pollution,and in different front processing methods,concentrated with water bath produced smallest influence. |
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| Keywords: | Trifluoroacetic acid CFCs Head-space GC |
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