Untargeted screening, method validation, and dietary risk assessment of pesticide residue in coix seed using HPLC-MS/MS

In this study, a multi-residue analytical method for pesticides in coix seed was constructed based on the non-targeted screening technique of HPLC-HRMS. A positive detection rate of 25.4% was found by systematic testing of 126 coix seed samples, with 39 pesticide residues, among which 6 pesticides, including dichlorvos, had residues exceeding the European Union's MRLs.
This data was used as supplementary material for the article “Untargeted screening, method validation, and dietary risk assessment of pesticide residue in coix seed using HPLC-MS/MS” and contains the following:
Figure Captions
Figure S1. Matching information of six quality control compounds in the coix seed matrix.
Figure S2. Mature seeds of four coix seed varieties: (a) CS1, (b) CS2, (c) CS3, (d) CS4.
Figure S3. Distribution of the pesticide multi residues in all the samples.
Figure S4 (1-13). The isotopic abundance of 37 pesticide residues in samples matches the degree of the database.
Table S1. CAS number, molecular weight, and classification of 39 compounds.
Table S2. Information on coix seed varieties.
Table S3. Nontarget screening gradient elution procedure.
Table S4. LC-MS/MS parameters of selected pesticides in coix seed.
Table S5. Regression equations, correlation coefficients (R2), matrix effect (ME), mean recovery (%) for 39 pesticides in CS2.
Table S6. Regression equations, correlation coefficients (R2), matrix effect (ME), mean recovery (%) for 39 pesticides in CS3.
Table S7. Regression equations, correlation coefficients (R2), matrix effect (ME), mean recovery (%) for 39 pesticides in CS4.
Table S8. Mean recovery (%), intraday (RSDR), and interday (RSDr) precision validation in CS2.
Table S9. Mean recovery (%), intraday (RSDR), and interday (RSDr) precision validation in CS3.
Table S10. Mean recovery (%), intraday (RSDR), and interday (RSDr) precision validation in CS4.
Table S11. Detection rates and maximum residue limits of pesticides in 126 coix seed samples.