采用原位衍生化搅拌棒吸附萃取-热脱附-气相色谱-质谱联用技术对水样中的甲基汞和汞（II）进行痕量分析。
Stir bar sorptive extraction with in situ derivatization and thermal desorption-gas chromatography-mass spectrometry for trace analysis of methylmercury and mercury(II) in water sample.
作者信息
Ito Rie, Kawaguchi Migaku, Sakui Norihiro, Okanouchi Noriya, Saito Koichi, Seto Yasuo, Nakazawa Hiroyuki
机构信息
Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Hoshi University, Ebara, Tokyo, Japan.
出版信息
Talanta. 2009 Feb 15;77(4):1295-8. doi: 10.1016/j.talanta.2008.09.001. Epub 2008 Sep 11.
A method for the trace analysis of methylmercury (MeHg) and Hg(II) in water sample was developed, which involved stir bar sorptive extraction (SBSE) with in situ alkylation with sodium tetraethylborate and thermal desorption (TD)-gas chromatography-mass spectrometry (GC-MS). The limits of quantification of MeHg and Hg(II) are 20 and 10 ng L(-1) (Hg), respectively. The method shows good linearity and the correlation coefficients are higher than 0.999. The average recoveries of MeHg and Hg(II) in tap or river water sample are 102.1-104.3% (R.S.D.: 7.0-8.9%) and 105.3-106.2% (R.S.D.: 7.4-8.5%), respectively. This simple, accurate, sensitive, and selective analytical method may be used in the determination of trace amounts of MeHg and Hg(II) in tap and river water samples.
建立了一种水样中甲基汞（MeHg）和汞（II）的痕量分析方法，该方法包括用四乙基硼酸钠进行原位烷基化的搅拌棒吸附萃取（SBSE）和热脱附（TD）-气相色谱-质谱联用（GC-MS）。MeHg和Hg（II）的定量限分别为20和10 ng L⁻¹（Hg）。该方法具有良好的线性，相关系数高于0.999。自来水或河水样中MeHg和Hg（II）的平均回收率分别为102.1-104.3%（相对标准偏差：7.0-8.9%）和105.3-106.2%（相对标准偏差：7.4-8.5%）。这种简单、准确、灵敏且具有选择性的分析方法可用于测定自来水和河水样中痕量的MeHg和Hg（II）。
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