摘要
以多壁碳纳米管为色谱分析的固相萃取材料,并对提取方式、提取剂、提取时间、填料量、洗脱剂等前处理条件进行了改进,为气相色谱检测土壤中毒死蜱、丙溴磷和三唑磷三种有机磷农药残留分析方法研究表明,通过固相萃取前处理,气相色谱处理方法在0.05~5.00 mg/L之间呈良好的线性关系,相关系数大于0.999 6,检出限在1.78×10-3~4.41×10-3 mg/kg之间。使用这个方案分别检验了蒙自农田土、万溪冲梨园、澄江韭菜地(大棚外)、澄江蔬菜地(大棚内)的四个土壤样品,并分析回收率。结果表明,样品中毒死蜱、丙溴磷、三唑磷回收率为85.9%~103.8%,RSD(相对标准偏差)值小于5.4%,满足农药残留检测的标准。
Based on multi-walled carbon nanotubes as the solid phase extraction material and optimization of extraction agent,extraction agent,extraction time,the amount of filler and eluent,a method has been developed for the determination of chlorpyrifos,triazophos and profenofos in soil by solid phase extraction-gas chromatography.The results showed that these pesticides had a good linearity in the range of 0.01~1.00 mg/L and the correlations were higher than 0.999 6.The limits of detection were 1.78×10-3~4.41×10-3 mg/L.The recoveries rates were between 85.9%and 103.8%with RSD(Relative Standard Deviation)below 5.4%.
作者
张苑苓
李杨梅
谭伟
赵田甜
方秀英
王红斌
李桂镇
Zhang Yuanling;Li Yangmei;Tan Wei;Zhao Tiantian;Fang Xiuying;Wang Hongbin;Li Guizhen(A School of Chemistry and Environment,Yunnan Minzu University,Kunming,Yunnan 650500,China)
出处
《化学世界》
CAS
CSCD
2019年第6期373-380,共8页
Chemical World
基金
云南民族大学2016年大学生创新创业训练计划和云南省教育厅2016年研究生资助项目
关键词
多壁碳纳米管
固相萃取
气相色谱
土壤
有机磷农药
multi-walled carbon nanotubes
solid phase extraction
gas chromatography
soil
pesticide residue
