摘要
为探明植物源农药苦参碱在梨及其土壤中的残留和消解情况,该研究采用气相色谱带氮磷检测器(NPD)分析法,在天津和安徽开展了苦参碱在梨和土壤中消解动态规律和残留情况的研究。结果表明,苦参碱在梨和土壤中的最低检测限为1.36×10^(-12)g,在梨和土壤中的最低检出浓度分别为0.01和0.004 mg·kg^(-1)。在天津和安徽,苦参碱在梨中的消解半衰期分别为4.89和3.94 d,在土壤中的消解半衰期分别为4.77和5.27 d,其消解均符合消解动态方程。采用高低剂量分别施药3和4次,施药7~28 d后,梨和土壤中的最终残留均低于我国农药残留限量标准中的临时最大限量值(MRL)5 mg·kg^(-1)。因此,在规范施药条件下,苦参碱在梨和土壤中属于低残留、易消解农药,在梨上施用膳食摄入风险低,施用相对安全。
In order to clarify the residue and degradation dynamics of botanical pesticide matrine in pear and soil,gas chromatography with nitrogen phosphorus detector(NPD)was used to analyze the degradation dynamics and residue of marine in pear and soil in Tianjing and Anhui for this study.The results indicated that the limit of detection of matrine in pear and soil was 1.36×10^(-12)g,and the lowest detected concentrations were 0.01 mg·kg^(-1) in pear and 0.004 mg·kg^(-1) in soil,respectively.In Tianjing province,the half-life of matrine in pear and soil were 4.89 and 4.77 d respectively.While,in Anhui,the half-life of matrine in pear and soil were 3.94 and 5.27 d respectively.The degradation rules of matrine in pear and soil in Tianjing and Anhui can fit the degradation dynamic equation.When matrine was applied with low and high dosages for three and four times at an interval of 7 d,the final residue in pear and soil were lower than the temporary maximum limit value(MRL)5 mg·kg^(-1) in national food safety standard-maximum residue limits for pesticides in food after 7-28 d of application.Therefore,matrine is low residue and easily degradation pesticide on pears and soil.Under standard use conditions,there is no dietary risk when it is applied on pears,so it is relatively safe to apply.
作者
卢莉娜
沈燕
高美静
仲建锋
卢飞
郑尊涛
张志勇
LU Lina;SHEN Yan;GAO Meijing;ZHONG Jianfeng;LU Fei;ZHENG Zuntao;ZHANG Zhiyong(State Key Laboratory Cultivation Base,Ministry of Science and Technology-Jiangsu Key Laboratory for Food Quality and Safety,Nanjing 210014,Jiangsu;Institute of Food Safety and Nutrition,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,Jiangsu;Institute for the Control of Agrochemicals,Ministry of Agriculture and Rural Affairs,Beijing 100010)
出处
《浙江农业科学》
2024年第9期2184-2189,共6页
Journal of Zhejiang Agricultural Sciences
基金
现代农业产业技术体系建设专项(CARS-28)
科技部“中医药现代化研究”重点研发专项(2017YFC1700800)。
关键词
苦参碱
梨
残留
消解动态
matrine
pear
residue
degradation dynamic
作者简介
卢莉娜(1986—),女,甘肃定西人,助理研究员,博士,主要从事农产品质量安全研究,E-mail:linalusailboat@163.com;通信作者:张志勇(1979—),男,湖北仙桃人,研究员,博士,主要从事农产品质量安全检测与控制,E-mail:zhangzhiyong@jaas.ac.cn。
