| HRGC/ECNI-LRMS测定大辽河入海口表层沉积物中短链氯化石蜡 |
| 摘要点击 1792 全文点击 1558 投稿时间：2009-10-13 修订日期：2010-01-11 |
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| 中文关键词 短链氯化石蜡 沉积物 分析方法 高分辨气相色谱/电子捕获负离子化-低分辨质谱 |
| 英文关键词 short-chain chlorinated paraffins (SCCPs) sediment analytical method HRGC/ECNI-LRMS |
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| 中文摘要 |
| 联合使用酸化硅胶层析柱和中性氧化铝层析柱净化处理沉积物样品中的短链氯化石蜡（SCCPs），并对净化条件进行优化，在此基础上，建立了沉积物中SCCPs的高分辨气相色谱/电子捕获负离子化-低分辨质谱（HRGC/ECNI-LRMS）分析方法.应用该方法分析研究了大辽河入海口表层沉积物中SCCPs的含量和各同系物组分的分布模式.结果表明，大辽河入海口表层沉积物中SCCPs以C10-SCCPs和C11-SCCPs为主，含量在64.9～407.0 ng/g之间，且随着向海洋方向延伸，SCCPs含量呈现下降趋势. |
| 英文摘要 |
| An analytical method for quantifying short-chain chlorinated paraffins (SCCPs) by high-resolution gas chromatography/electron capture negative ion low-resolution mass spectrometry (HRGC/ECNI-LRMS) was presented. The cleanup procedure with an acid silica gel column and activated neutral alumina column was optimized to remove the interferences. As illustration of the application of the method to environmental samples, it is found that lower chlorinated C10 and C11 compounds were the main SCCPs compounds in six sediment samples from the mouth of the Daliao River. The concentrations of SCCPs in sediments were determined to be in the range of 64.9-407.0 ng/g and showed a decreasing tendency from the shore to the remote location. |
