Nghiên cứu xác định paes trong mẫu nước bằng cách sử dụng kĩ thuật chiết pha rắn kết hợp với sắc ký khí ghép nối khối phổ

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Ngọc Châu Chu, Minh Hương Giang Đặng, Minh Thùy Lê, Nữ Mĩ Hà Nguyễn, Thị Thanh Huyền Nguyễn, Đức Hòa Phùng, Ánh Ngọc Tạ, Mạnh Trí Trần, Bình Minh Từ

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Nguyễn Tất Thành, 2023

Mô tả vật lý: tr.1

Bộ sưu tập: Metadata

ID: 347410

Thêm vào giỏ Liên kết toàn văn

Phthalic acid diesters (PAEs) are industrial chemicals used as plasticizers in a variety of commercial products. Due to wide usage, PAEs have been found in various environments and their human exposure risks have also attracted a lot of concerns. However, little information about the distributions of PAEs in the water samples collected from Vietnam was reported. In this study, the method for the determination of nine typical PAEs in water samples by using the solid phase extraction (SPE) combined with gas chromatography-mass spectrometry (GC-MS) technique was optimized. The method detection limits (MDLs) and method quantitation limits (MQLs) of PAEs in water samples were in ranges of 0.2–0.4 ng/L and (0.6-1.2) ng/L, respectively. The recoveries of surrogate compounds in blank and real samples ranged from (74.8 to 93.9) %, with RSD <
9.2 %. The calibration curve for all standards was linear over a concentration range of (1.0-1,000) ng/mL (with R2 ≥ 0.998). The total concentrations of PAEs measured in bottled water of six brands were ranged from 10.0 ng/L to 6,690 ng/L. Among the studied PAEs, di-(2-ethylhexyl) phthalate (DEHP) was found at the highest frequencies and concentrations. Overall, the distribution of PAEs in plastic bottled water is significantly lower than the permitted regulations (only with DEHP) in drinking water by the Ministry of Health of Vietnam in 2011.Phthalic acid diesters (PAEs) là các hóa chất tổng hợp được sử dụng làm tác nhân dẻo hóa nhựa trong nhiều sản phẩm thương mại khác nhau. Vì được sử dụng rộng rãi nên PAEs được tìm thấy trong nhiều môi trường khác nhau và ảnh hưởng xấu đến sức khỏe con người là điều rất đáng quan tâm. Tuy nhiên, rất ít thông tin về sự phân bố của PAEs trong môi trường nước được báo cáo tại Việt Nam. Trong nghiên cứu này, phương pháp xác định 9 hợp chất PAEs điển hình trong mẫu nước đã được tối ưu bằng sự kết hợp giữa kĩ thuật chiết pha rắn (SPE) với sắc kí khí ghép nối khối phổ. Giới hạn phát hiện của phương pháp (MDLs) và giới hạn định lượng của phương pháp (MQLs) đối với các PAEs trong mẫu nước nằm trong khoảng (0,2-0,4) ng/L và (0,6-1,2) ng/L, tương ứng. Độ thu hồi của các chất đồng hành trong mẫu trắng và mẫu thực nằm trong khoảng từ 74,8 % đến 93,9 %, với RSD <
9,2 %. Phương trình đường chuẩn đối với tất cả các chất chuẩn được xây dựng trong khoảng nồng độ (1,0-1.000) ng/mL (với R2 ≥ 0,998). Tổng nồng độ của PAEs đo được trong mẫu nước đóng chai thu được từ 6 hãng sản xuất bán trên thị trường nằm trong khoảng từ (10,0-6.690) ng/L. Trong số các PAEs nghiên cứu, di-(2-ethylhexyl) phthalate (DEHP) được tìm thấy với tần suất và nồng độ lớn nhất. Nhìn chung, sự phân bố của PAEs trong nước đóng chai thấp hơn đáng kể so với tiêu chuẩn cho phép (chỉ đối với DEHP) trong nước uống được quy định bởi Bộ Y tế Việt Nam, năm 2011.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR