摘要
采用超高效液相色谱-四级杆飞行时间质谱对2组土壤样品进行化合物分析,利用多变量统计分析方法筛选特征化合物,通过谱库检索匹配获得成分差异筛查响应值最高的土壤除草剂成分。并通过在空白土壤样品添加莠去津、苯噻酰草胺等7种除草剂,验证土壤样品中除草剂成分差异筛查方法的可行性。结果表明:根据空白和添加土壤样品中各自化合物出现的频率、响应值、可变性、特征性等进行过滤分析,成功筛查出添加的除草剂成分。利用该方法对2组实际土壤样品进行比对分析,可高效预测其关键除草剂成分差异。该方法为土壤间除草剂成分差异的非靶向筛查提供了一种思路。
The components of two groups of soil samples were analyzed by ultra-high-performance liquid chromatography quadrupole time-of-flight mass spectrometry(UPLC-QTOF/MS),and the differences in ingredients were screened using mass profiler professional(MPP)software.The herbicide with the highest response value identified through component difference screening was obtained through PCDL mass spectral database retrieval and matching.And by adding herbicides such as atrazine,mefenacet,etc.,to the blank soil samples,the feasibility of the screening method for detecting differences in herbicide components in soil samples was verified.The results showed that the added herbicide compounds were successfully screened out through filtration analysis on the basis of the frequency,response value,variability and characteristics of the compounds in the blank and added soil samples,respectively.The MPP software filtered and analyzed the frequency,response values,variability,and characteristics of the compounds present in the blank and added soil samples,and successfully screened for the added herbicides.Using this method to compare and analyze two sets of the actual soil samples,it was possible to efficiently predict the differences in key herbicide components.This method provided an approach for non-targeted screening of differences in herbicide composition between soils.
作者
尹硕
罗雪婷
师迎春
田争
孙新圆
李秋梅
潘洪吉
吴迪
YIN Shuo;LUO Xueting;SHI YingChun;TIAN Zheng;SUN Xinyuan;LI Qiumei;PAN Hongji;WU Di(Beijing Plant Protection Station,Beijing 100029,China;Plant Protection and Plant Quarantine Station of Shunyi District,Beijing City,Beijing 101300,China)
出处
《现代农药》
2025年第6期63-68,共6页
MODERN AGROCHEMICALS
