Effects of Soil Physical and Chemical Properties on Detection of Organic Pesticides by High Performance Liquid Chromatography

ZHANG Jiao; LI Ruoyun; LIU Qinghua

doi:10.15933/j.cnki.1004-3268.2017.01.012

Abstract：To study the effects of soil physical and chemical properties on detection of organic pesticides by high performance liquid chromatography,the experiment on the rate of recovery was conducted using three kinds of organic phosphorus pesticides with different properties (chlorpyrifos,3,5,6-TCP,omethoate) and six kinds of soils with different physical and chemical properties(Coastal sandy soil,Xifu town brown soil,pear orchard semi-fixed sandy soil,Laiyang cinnamon soil,Jihongtan moisture soil and Laiyang brown soil),and the rate of recovery and the relative standard deviation were calculated.The results showed that the influence of soil physical and chemical properties on accuracy and precision of pesticide detection was correlated with the pesticide scalar added.On the whole,the influence was not significant when the pesticide scalar added was higher,but it was obvious when the pesticide scalar added was lower.The soil physical and chemical properties had different influences on detection results for pesticides with different properties.The stronger the hydrophobicity of pesticide was,the greater the influence of organic matter on pesticide test results was.The stronger the hydrophilic property of pesticide was,the greater the influence of cation exchange capacity (CEC) on pesticide test results was.The greater the influence of pH on pesticide morphology in soil was,the greater the influence of pH on pesticide test results was.No significant relationship was observed between the dctcction effects and the total nitrogen,total phosphorus,total potassium.In short,soil physical and chemical properties have influences on the accuracy and precision of the detection results of organic pesticides by high performance liquid chromatography,related with the pesticide properties and the pesticide scalar added.