Total organochlorine and organobromine in Finnish water courses
Total organochlorine and organobromine in Finnish water courses
复制标题
芬兰水道中的总有机氯和有机溴
作者：
P. Manninen;E. Häsänen
建立了不同类型水体、沉积物和生物样品中总有机氯（TOCl）和总有机溴（TOBr）的分析方法。沉积物样品用碱性丙酮提取，生物样品用中性丙酮+水溶液提取。采用中子活化分析法（NAA）测定卤素。TOCl和TOBr的检测限分别为5和0.5 µg l−1（水）（样品量100 ml）和0.3和0.1 µg g g−1 dw（沉积物和生物样品）（样品量1 g）。常见有机氯化合物的回收率通常在90%以上，在自然条件下的沃茨中测得的TOCl浓度低于15 µg l−1;在受污染的沃茨中测得的TOCl浓度为100至500 µg l−1，偶尔达到2000 µg l−1。TOBr浓度通常远低于10 µg 1−1。
Methods were developed for analyzing total organochlorine (TOCl) and total organobromine (TOBr) in different kinds of water, sediment and biological samples. Sediment samples were extracted with alkaline propanone and biological samples with a neutral propanone + water solution. Neutron activation analysis (NAA) was used for the halogen determination. The detection limits for TOCl and TOBr are respectively 5 and 0.5 µg l−1 for water (sample size 100 ml) and 0.3 and 0.1 µg g−1 dw (sample size 1 g) for sediment and biological samples. Recoveries for common organochlorine compounds were usually over 90%.TOCl concentrations measured in waters in a natural condition were below 15 µg l−1; and in polluted waters, from 100 to 500 µg l−1, and occasionally to 2000 µg l−1. TOBr concentrations were generally well below 10 µg 1−1.