Bài viết trình bày đánh giá khả năng phân tích dioxin trong mẫu nước bằng hệ thống thiết bị sắc ký khối phổ ba tứ cực GC-MS/MS. Điều này cho thấy tính khả thi của việc áp dụng GC-MS/MS trong phân tích dioxin/furan nhằm thay thế hoặc áp dụng song song với phương pháp GC-HRMS ngày càng cao. | Tạp chí phân tích Hóa Lý và Sinh học - Tập 29 Số 1 2023 ĐÁNH GIÁ KHẢ NĂNG PHÂN TÍCH DIOXIN TRONG MẪU NƯỚC BẰNG HỆ THỐNG THIẾT BỊ SẮC KÝ KHỐI PHỔ BA TỨ CỰC GC-MS MS Đến tòa soạn 15-12-2022 Vũ Trung Hiếu Nguyễn Thị Thu Lý Nguyễn Thị Dung Nguyễn Thị Thu Nguyễn Đức Thắng Bùi Duy Linh Phân viện Hóa Môi trường Trung tâm Nhiệt đới Việt Nga Email SUMMARY ASSESSMENT OF DIOXIN ANALYSIS IN WATER SAMPLE BY GAS SPECTROMETER-TRIPLE QUADRUPOLE MASS SPECTROMETER GC-MS MS Polychlorinated dibenzodioxins PCDD and Polychlorinated dibenzofurans PCDF are two groups of toxic substances that belong to the group of persistent organic substances POP that are received considerable attention and various analytical methods for determination of PCDD Fs have been developed. Analytical method using gas chromatography and high-resolution mass spectrometry GC- HRMS system with high resolution and excellent sensitivity has long been considered as a standard method for dioxins analysis. Simultaneously the triple quadrupole gas chromatography-mass spectrometry system GC-MS MS with sensitivity equal to GC-HRMS and reduced operating and maintenance costs is being actively researched and developed for dioxin analysis as an alternative to GC-HRMS. This paper reports the operating conditions and the results of dioxin analysis in the water sample on the GC-MS MS system and direct comparison with the results obtained from GC-HRMS. Both equipments demonstrated a good consistency in sensitivity and results of concentrations in water samples but the GC-MS MS system showed superior Signal-to-Noise signal compared to GC-HRMS. GC-MS MS showed good repeatability and reproducibility and met the requirements of dioxin analysis method comparable to GC-HRMS. With the advantage of low initial cost and much lower operating and maintenance costs than GC-HRMS GC-MS MS proved to be a potential method for analyzing dioxins in water samples Keywords Dioxin GC-MS MS GC-HRMS. 1. ĐẶT VẤN ĐỀ chất trên .
