| 摘要: |
| 采用甲醇提取-吹扫捕集的前处理方法并结合气相色谱-质谱仪来测定土壤样品中的8种苯系物。实验结果表明，8种苯系物在前处理过程中被有效提取出来并被准确定性和定量，对于低浓度样品也具有良好的实验效果。此方法的检出限为0.3~0.8 μg/kg，测定下限为1.2~3.2 μg/kg。加标低、中、高3种不同质量比的标准物质，经实验分析土壤中8种苯系物相对标准偏差（RSD）为2.1%~6.8%，加标回收率为91.0%~105%，与相关行业标准相比具有一定的优势。 |
| 关键词: 甲醇提取 吹扫捕集 气质联用 土壤 苯系物 |
| DOI： |
| 分类号:X833；O657.63 |
| 基金项目: |
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| Rapid Determination of Eight Kinds of Benzene Series in Soil by Methanol Extraction Purge &Trap Gas Chromatography Mass Spectrometry |
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CAI Hao-jing
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Suzhou Kunshan Environmental Monitoring Station, Kunshan, Jiangsu 215316, China
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| Abstract: |
| Eight kinds of benzene series in soil samples are determined by the pretreatment method of automatic methanol extraction followed by purge & trap GCMS. The experimental results showed that eight kinds of benzene series could be well extracted in the pre treatment process and be accurately qualitatively and quantitatively determined, and it also showed good experimental results for low concentration samples.The detection limit of this method ranged from 0.3 to 0.8 μg/kg, and the quantification limit were in the range of 1.2～3.2 μg/kg. The relative standard deviations (RSD) of eight kinds of benzene series in soil were in the range of 2.1%～6.8%, and the recoveries were in the range of 91.0%～103%, which showed certain superiority compared with the relevant industrial standards. |
| Key words: Methanol extraction Purge & trap Gas chromatography mass spectrometry Soil Benzene series |
