加速溶剂萃取-气相色谱质谱法测定土壤中多环芳烃的含量
目的 建立土壤中7种多环芳烃(PAHs)的气相色谱质谱测定方法。方法 采用加速溶剂萃取法(ASE), 以二氯甲烷和丙酮(1∶1, v/v)为溶剂, 萃取液通过弗罗里硅土固相萃取柱净化后, 用GC/MS检测, 检测模式为选择离子监测(SIM)模式, 利用保留时间和特征离子进行定性, 外标法定量。结果 7种多环芳烃线性关系良好, 相关系数均大于0.995, 加标回收率均在87.2%~129%范围内, 最低检出限在0.096~1.48 μg/kg之间。结论 该方法操作方便、灵敏度高、重现性好, 可用于土壤中痕量多环芳烃的测定。
Objective To establish a method for the determination of seven polycyclic aromatic hydrocarbons (PAHs) residues in soil by GC/MS. Methods The soil samples were extracted with accelerated solvent extraction (ASE) using a mixture of dichloromethane and acetone(1: 1, v/v), purified with solid phase extraction (SPE) and analyzed by gas chromatography -mass spectrometry (GC/MS) under selected ion mode (SIM). Reten-tion time and characteristics ions were used for qualification and external standard method was used for quantitation. Results All of the seven PAHs standards showed a good linearity (r >0.995). The recoveries were between 87.2% and 129% and the detection limits were 0.096~1.48 μg/kg. Conclusion This method is simple, sensitive and reproductive, and it is suitable for the determination of seven PAHs residues in soil.
标题：加速溶剂萃取-气相色谱质谱法测定土壤中多环芳烃的含量
英文标题：Determination of polycyclic aromatic hydrocarbons residues in soil by GC/MS equipped with accelerated solvent extraction
作者：
平华 北京农产品质量检测与农田环境监测技术研究中心
李杨 北京农产品质量检测与农田环境监测技术研究中心
潘立刚 北京农产品质量检测与农田环境监测技术研究中心
陆安祥 北京农产品质量检测与农田环境监测技术研究中心
马智宏 北京农产品质量检测与农田环境监测技术研究中心
栾云霞 北京农产品质量检测与农田环境监测技术研究中心
王纪华 北京农产品质量检测与农田环境监测技术研究中心
中文关键词:土壤,多环芳烃,加速溶剂萃取法,固相萃取,气相色谱质谱法,
英文关键词:soil,polycyclic aromatic hydrocarbons,accelerated solvent extraction,solid phase extraction,gas chromatography-mass spectrometry,
发表日期：2012-11-12
- 文件大小:
- 148.28 KB
- 下载次数:
- 60
-
高速下载
|
