T/FQIA 013-2024 Determination of 28 pesticide residues in tea fresh leaves by gas chromatography-tandem mass spectrometry

Scope

Scope: This document specifies the determination of 28 pesticide residues in fresh tea leaves by gas chromatography-tandem mass spectrometry (GC-MS/MS). This document is applicable to the determination of 28 pesticide residues in fresh tea leaves; Main technical content: This document specifies the determination of 28 pesticide residues in fresh tea leaves by gas chromatography-tandem mass spectrometry (GC-MS/MS). This document is applicable to the determination of 28 pesticide residues in fresh tea leaves. The main technical content includes: - Preface - 1 Scope - 2 Normative references - 3 Terms and definitions - 4 Principles - 5 Reagents and materials 5.1 Reagents 5.2 Standards 5.3 Preparation of standard solutions 5.4 Materials - 6 Instruments and equipment - 7 Sample preparation and storage - 8 Analytical procedures 8.1 Pre-treatment 8.2 Determination 8.2.1 Instrument reference conditions 8.3 Determination of sample solutions 8.4 Parallel tests 8.5 Blank tests - 9 Calculation and expression of results 10.1 Sensitivity 10.2 Accuracy 10.3 Precision - Appendix A (informative): Index of the English and Chinese names of 28 pesticides - Appendix B (informative): Retention times, parent ions, daughter ions, and ion pairs of 28 pesticides for mass spectrometry - Appendix C (informative): Multiple reaction monitoring (MRM) chromatograms of 28 pesticides (10.0 mg/L)

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