Herbicide residues in agricultural products can have adverse effects on the environment and human health,therefore,there is an urgent need to establish a sensitive,rapid,and wide-ranging detection method.In this study...Herbicide residues in agricultural products can have adverse effects on the environment and human health,therefore,there is an urgent need to establish a sensitive,rapid,and wide-ranging detection method.In this study,haptens of phenylurea herbicides(PUs)and sulfonylurea herbicides(SUs)were analyzed and designed based on computational simulation techniques,and two high-performance broad-spectrum monoclonal antibodies against PUs and SUs were prepared.On this basis,a multi-colloidal gold immunochromatography assay(multi-CGIA)was developed to simultaneously detect 13 herbicides in wheat.The visual limit of detection(vLOD)for PUs including diuron,chlortoluron,neburon,chlorbromuron,and linuron was 1-2μg/kg.The vLOD for SUs including metsulfuron methyl,ethametsulfuron-methyl,sulfometuron-methyl,tribenuron methyl,cinosulfuron,triasulfuron,chlorimuron-ethyl,and chlorsulfuron was 2-10μg/kg.The results of real sample determination indicated that the multi-CGIA is accurate,stable,and reliable,and adaptable to on-site preliminary screening of actual samples.展开更多
基金supported by the National Natural Science Foundation of China(Nos.22306074 and 222360020)the National Key Research and Development Program of China(Nos.2023YFF1105003 and 2022YFA1207300)the grants from Jiangsu province(Nos.CX(22)1013,BK20212014,and M20221006).
文摘Herbicide residues in agricultural products can have adverse effects on the environment and human health,therefore,there is an urgent need to establish a sensitive,rapid,and wide-ranging detection method.In this study,haptens of phenylurea herbicides(PUs)and sulfonylurea herbicides(SUs)were analyzed and designed based on computational simulation techniques,and two high-performance broad-spectrum monoclonal antibodies against PUs and SUs were prepared.On this basis,a multi-colloidal gold immunochromatography assay(multi-CGIA)was developed to simultaneously detect 13 herbicides in wheat.The visual limit of detection(vLOD)for PUs including diuron,chlortoluron,neburon,chlorbromuron,and linuron was 1-2μg/kg.The vLOD for SUs including metsulfuron methyl,ethametsulfuron-methyl,sulfometuron-methyl,tribenuron methyl,cinosulfuron,triasulfuron,chlorimuron-ethyl,and chlorsulfuron was 2-10μg/kg.The results of real sample determination indicated that the multi-CGIA is accurate,stable,and reliable,and adaptable to on-site preliminary screening of actual samples.
