Stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry for trace analysis of benzophenone and its derivatives in water sample
Stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry for trace analysis of benzophenone and its derivatives in water sample
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DOI：
10.1016/j.aca.2005.08.087
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发表时间：
2006-01-31
影响因子：
6.2
通讯作者：
Nakazawa, H
中科院分区：
文献类型：
--
作者：
Kawaguchi, M;Ito, R;Nakazawa, H
建立了一种简单、高灵敏度的混合棒吸附萃取(SBSE) -热解吸(TD)-气相色谱-质谱联用（GC-MS）法，用于测定河流水样中微量二苯甲酮（BP）及其衍生物2-羟基-4-甲氧基二苯甲酮（BP-3）和2-羟基-4-甲氧基4′-甲基二苯甲酮（BP-10）。将涂有聚二甲基硅氧烷（PDMS）的搅拌棒加入到10ml水样中，在室温（25℃）下在小瓶中搅拌120分钟。然后，对PDMS搅拌棒进行TD-GC-MS分析。bp的检出限为0.5-1 pg ml（-1）。方法线性良好，相关系数均大于0.997。bp的平均加样回收率等于或高于98.5%（相对标准偏差：1.5 ~ 5.1%）。该分析方法简便、准确、灵敏、选择性好，可用于河流水样中痕量bp的测定。(c) 2005 Elsevier B.V.版权所有
A simple and highly sensitive method called stir bar sorptive extraction (SBSE) and thermal desorption (TD)-gas chromatography-mass spectrometry (GC-MS), which is used for the determination of trace amounts of benzophenone (BP) and its derivatives, 2-hydroxy-4-methoxybenzophenone (BP-3) and 2-hydroxy-4-methoxy-4'-methylbenzophenone (BP-10), in river water samples, is described. A stir bar coated with polydimethylsiloxane (PDMS) is added to a 10 ml water sample and stirring is carried out for 120 min at room temperature (25 degrees C) in a vial. Then, the PDMS stir bar is subjected to TD-GC-MS. The detection limit is 0.5-1 pg ml(-1) for BPs. The method shows good linearity and the correlation coefficients are higher than 0.997 for all the analytes. The average recoveries of the BPs are equal to or higher than 98.5% (R.S.D.: 1.5-5.1%). This simple, accurate, sensitive and selective analytical method may be used in the determination of trace amounts of BPs in river water samples. (c) 2005 Elsevier B.V. All rights reserved.