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首页> 外文期刊>Environmental toxicology and chemistry >ENVIRONMENTAL MONITORING FOR LINEAR ALKYLBENZENE SULFONATES, DIALKYLTETRALIN SULFONATES AND THEIR BIODEGRADATION INTERMEDIATES
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ENVIRONMENTAL MONITORING FOR LINEAR ALKYLBENZENE SULFONATES, DIALKYLTETRALIN SULFONATES AND THEIR BIODEGRADATION INTERMEDIATES

机译：线性烷基苯磺酸盐，二烷基叶绿素磺酸盐及其生物降解中间体的环境监测

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摘要

Concentrations of linear alkylbenzene sulfonates (LAS), dialkyltetralin sulfonates (DATS), and their biodegradation intermediates are reported for the influents and effluents of 10 U.S. domestic wastewater treatment plants as well as upstream and downstream river waters and sediments. Three types of treatment facilities in 10 U.S. states were sampled and analyzed. Removals were calculated based on initial concentrations of LAS and DATS. A derivatization electron capture/gas chromatography/mass spectrometry method was employed. Its increased sensitivity and selectivity permitted the determination of environmental levels of LAS, DATS, and their biodegradation intermediates at low micrograms per liter (ppb) concentrations. The removal from four activated sludge and five trickling filter wastewater treatment facilities averaged 99.5% and 82.9% for LAS and 99.1% and 97.3% for LAS intermediates, respectively, for the activated sludge and trickling filter facilities. In the same plants, percent removals for DATS averaged 95% and 63.2% and DATS intermediates 59.1% and 58.7%, respectively. The removals obtained by a rotating biological contactor were similar to those observed in the activated sludge wastewater treatment facilities.
机译：据报导，美国10家生活污水处理厂的进水和出水以及上游和下游河水和沉积物的直链烷基苯磺酸盐（LAS），二烷基四氢萘磺酸盐（DATS）及其生物降解中间体。对美国10个州的三种类型的处理设施进行了采样和分析。根据LAS和DATS的初始浓度计算去除量。采用衍生化电子捕获/气相色谱/质谱法。它提高了灵敏度和选择性，可以测定低微克每升（ppb）浓度的LAS，DATS及其生物降解中间体的环境水平。活性污泥和滴滤池设施的四个活性污泥和五个滴滤池废水处理设施的平均去除率分别为LAS的99.5％和82.9％，LAS中间体的99.1％和97.3％。在同一工厂中，DATS的去除率平均分别为95％和63.2％，DATS中间体的去除率分别为59.1％和58.7％。通过旋转的生物接触器获得的去除率与在活性污泥废水处理设施中观察到的去除率相似。

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