英语翻译Stir bar sorptive extraction (SBSE) in combination with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) was applied for the determination of 9 UV filters in water samples.The stir bar coated with polydimethylsiloxane (P

英语翻译Stir bar sorptive extraction (SBSE) in combination with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) was applied for the determination of 9 UV filters in water samples.The stir bar coated with polydimethylsiloxane (P
英语翻译
Stir bar sorptive extraction (SBSE) in combination with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) was applied for the determination of 9 UV filters in water samples.The stir bar coated with polydimethylsiloxane (PDMS) was added to 20 mL of water sample at pH 2 (10% MeOH) and stirred at 1000 rpm for 180 min.Then,the stir bar was subjected to TD-GC-MS.The desorption conditions (desorption temperature and desorption time) and SBSE parameters (ionic strength,pH,presence of organic solvent and time) were optimised using a full factorial design and a Box-Behnken design,respectively.The method shows good linearity (correlation coefficients > 0.994) and reproducibility (RSD < 16%).The extraction efficiencies were above 63% for all the compounds.Detection limits were between 0.2 and 63 ng/L.The developed method offers the ability to detect several UV filters at ultra-low concentration levels with only 20 mL of sample volume.The effectiveness of the method was tested by analysing real samples such as lake water,river water and treated wastewater.The application of the method allowed reporting the levels of UV filters in environmental water samples.(C) 2007 Elsevier B.V.All rights reserved.

英语翻译Stir bar sorptive extraction (SBSE) in combination with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) was applied for the determination of 9 UV filters in water samples.The stir bar coated with polydimethylsiloxane (P
搅拌子吸着力萃取（SBSE)与热解吸-气相色谱-质朴 (TD-GC-MS) 的联用被用于对水样的 9 个UV吸收物质进行了测定.涂敷有聚二甲基硅烷(PDMS)的搅拌子在20 mL pH等于2的水样中以转速1000 转/分钟旋转搅拌180分钟.这样处理过的搅拌子然后被用来做TD-GC-MS检测.全析因设计和Box-Behnken设计被用来对解吸条件（解吸温度,解吸时间）和SBSE参数（离子强度,pH,残存的有机溶剂,和时间）进行了优化处理.本方法显示了很好的线性关系（相关系数 > 0.994)和重复性（相对标准偏差RSD < 16%).（该方法）对所有所测样品的萃取消率均高于63%,检测极限为0.2 到 63 ng/L.所开发的本方法只需要20 mL 样品就能够监测出多个超低浓度级的UV吸收物质.本方法的有效性也通过了对真实样品测试的考验,它们包括湖水,河水和经过处理的废水.这一方法的应用使得（直接）检测环境水样品中UV吸收物质的浓度成为可能.