摘要
以水草和鱼样品为研究对象,采用超声波法提取生物样品中的氯苯类化合物(CBs)并用气相色谱进行定性和定量分析。结果表明:用超声波提取生物样品中CBs的最佳提取溶剂为正己烷,功率为25W,提取时间为20min。植物和动物样品中CBs的提取方法稍有不同。在最佳提取条件下,鱼样中的平均加标回收率为75.2%～91.6%,水草中的平均加标回收率为88.2%～94.3%。另外,要根据污染物的检出限,确定生物样品中污染物提取的浓缩倍数。结论:用超声波法提取生物样品中的CBs的方法是可行的。
Ultrasonic extraction and determination of chlorobenzenes in biological samples based on waterweeds and fishes with Gas Chromatography （CBs）. The results showed that the optimal extraction solvent was n-hexane for the Ultrasonic extraction. The optimal ultrasonic power and time were 25 W and 20 min, respectively. The methods of extraction were a bit different between the plant samples and animal samples. Under the optimal extraction conditions, the recoveries of fishes and waterweeds were 75.2%～91.6% and 88.2%～94.3%, respectively. During the extraction, the concentrate multiples of samples were made certain by the detection limit. Conclusion： The ultrasonic extraction of CBs in biological samples was workable.
出处
《生态环境学报》
CSCD
北大核心
2009年第1期201-204,共4页
Ecology and Environmental Sciences
基金
国家“985”工程二期项目(2005-90004-3172000)
广东工业大学博士启动基金项目(073021)
关键词
氯苯类化合物
生物样品
超声波提取
Chlorobenzenes
Biological samples
Ultrasonic extraction
