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