Xây dựng phương pháp phân tích dư lượng thuốc bảo vệ thực vật họ Cúc sử dụng QuEChERS AOAC 2007.01 trên thiết bị GC/MS/MS

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Tác giả: Minh Tuấn Lê, Thu Thủy Lê, Lê Kim Phụng Nguyễn, Ngọc Phương Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại: 669.9 Physical and chemical metallurgy

Thông tin xuất bản: Nông nghiệp & Phát triển nông thôn, 2022

Mô tả vật lý: 66 - 71

Bộ sưu tập: Metadata

ID: 499705

Thêm vào giỏ

A new method was developed base on AOAC 2007.01 standard applied to analysis of Pyrethroid pesticides residues in vegetable and fruit by Gas chromatography/mass spectrometry/mass spectrometry (GC/MS/MS) system using QuEChERS for sample preparation. Analysis of Pyrethroid pesticides compounds: Acrinathrin, Cyfluthrin, Cyhalothrin, Cypermethrin, Deltamethrin, Etofenprox, Fenvalerate, Permethrin, Tetramethrin in green pepper. QuEChERS using for sample preparation and extraction to reduce of fatty acid or colors affects. The final liquid extraction will be analysis by Gas chromatography/mass spectrometry/mass spectrometry (GC/MS/MS). The result of this study showed that the linearity (R2) of the method for each analyte was over 0.995
the recovery efficiency on each sample platform was over 89% with the best standard deviation of the method reached 1.37%
the lowest detection limit of the method was 1.642 ppb.Xây dựng phương pháp xác định dư lượng thuốc bảo vệ thực vật họ Cúc tổng hợp trong hồ tiêu xanh, ứng dụng vào kiểm soát chất lượng hồ tiêu xuất khẩu. Phương pháp được xây dựng dựa trên tiêu chuẩn AOAC 2007.01, sử dụng QuEChERS trong quá trình xử lý mẫu để loại bỏ các chất gây ảnh hưởng đến quá trình tách chiết như chất béo, màu,... Dịch chiết thu được sẽ phân tích trên thiết bị sắc ký khí ghép nối đầu dò khối phổ MS (GC/MS/MS). Thực hiện phân tích các chất gồm: Acrinathrin, Cyfluthrin, Cyhalothrin, Cypermethrin, Deltamethrin, Etofenprox, Fenvalerate, Permethrin, Tetramethrin trên nền mẫu hạt hồ tiêu xanh. Kết quả nghiên cứu cho thấy, độ tuyến tính tương đối tốt với hệ số tương quan (R2 ) đều đạt trên 0,995, hiệu suất thu hồi đạt trên 89%, giới hạn phát hiện thấp nhất của phương pháp đạt từ 1,642 ppb, độ lệch chuẩn tốt nhất của phương pháp đạt 1,37%.

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