期刊论文

On residue of chlorothalonil in harvested potato and its dynamic degradation mechanism in soil

中文

安全与环境学报

1009-6094

2019

19

2

628-634

10.13637/j.issn.1009-6094.2019.02.039

2017年国家级大学生创新创业训练计划项目(G(S)CX1717) 2017年湖南省大学生研究性学习和创新性实验计划项目(SCX1717).

本校为第一机构

为评价百菌清在马铃薯上的使用安全性及土壤中的消解动态残留,建立了百菌清在马铃薯及土壤中的残留分析方法,2016—2017年在湖南长沙和河北石家庄两地进行了720 g/L百菌清悬浮剂在马铃薯上的施用,分析了其有效成分百菌清在马铃薯上的消解动态和最终残留。马铃薯、土壤样品用体积比为1∶1的丙酮-乙腈的混合液振荡提取,提取液经盐析、浓缩后用乙腈定容,气相色谱法检测。结果表明,在添加水平为0. 02 mg/kg、0. 20 mg/kg和2. 00 mg/kg时,马铃薯中百菌清残留量检测方法的添加回收率为81. 1%~110. 5%,相对标准偏差(RSD)为4. 4%~11. 9%;土壤中百菌清残留量检测方法的添加回收率为82. 4%~111. 6%,RSD为6...

Intends to establish a residue analysis method for assessing and degratation of the chlorothalonil in the potato and the soil so as to increase the safe application of chlorothalonil in the soil and the dynamic mechanism of the residue digestion in it, we managed to apply the digestion dynamics to the study of the final residues of chlorothalonil in the potato after 720 g/L chlorothalonil suspension in the potato in Changsha, Hunan and Shijiazhuang, Hebei, respectively, in 2016 and 2017.On the purpose, we have extracted potato and soil samples by the mixture of acetone and acetonitrile (1:1, V...