Comellas L, Portillo J L, Vaquero M T
Secció de Cromatografia, C.E.T.S. Institut Químic de Sarrià (Universitat Ramon Llull), Barcelona, Spain.
J Chromatogr A. 1993 Dec 24;657(1):25-31. doi: 10.1016/0021-9673(93)83031-M.
A procedure for determining linear alkylbenzenesulphonates (LASs) in sewage sludge and amended soils has been developed. Extraction by sample treatment with 0.5 M potassium hydroxide in methanol and reflux was compared with a previously described extraction procedure in Soxhlet with methanol and solid sodium hydroxide in the sample. Repeatability results were similar with savings in extraction time, solvents and evaporation time. A clean-up method involving a C18 cartridge has been developed. Analytes were quantified by a reversed-phase HPLC method with UV and fluorescence detectors. Recoveries obtained were higher than 84%. The standing procedure was applied to high doses of sewage sludge-amended soils (15%) with increasing quantities of added LASs. Degradation data for a 116-day period are presented.
已开发出一种测定污水污泥和改良土壤中直链烷基苯磺酸盐（LASs）的方法。将样品用0.5M氢氧化钾的甲醇溶液处理并回流萃取，与之前描述的在索氏提取器中用甲醇和样品中的固体氢氧化钠进行萃取的方法进行了比较。重复性结果相似，同时节省了萃取时间、溶剂和蒸发时间。已开发出一种涉及C18柱的净化方法。通过配备紫外和荧光检测器的反相高效液相色谱法对分析物进行定量。获得的回收率高于84%。将常规方法应用于添加了越来越多LASs的高剂量（15%）污水污泥改良土壤。给出了116天期间的降解数据。
