Trong viết này, mức độ ô nhiễm và đặc trưng tích lũy của 36 đồng loại polybrom diphenyl ete (PBDEs) với số nguyên tử brom từ 2 đến 10 trong mẫu bụi đường thu thập tại một khu vực đô thị, một khu công nghiệp và một khu vực nông thôn ở miền Bắc Việt Nam đã được nghiên cứu, đánh giá. | Phân tích và đánh giá mức độ ô nhiễm của các Polybrom Diphenyl ete trong mẫu bụi đường tại một số khu vực ở miền Bắc Việt Nam VNU Journal of Science: Natural Sciences and Technology, Vol. 35, No. 2 (2019) 65-72 Original Article Analysis and Evaluation of Contamination Status of Polybrominated Diphenyl Ethers in Road Dust from Some Northern Vietnam Areas Hoang Quoc Anh1,2, Shin Takahashi2, Vu Duc Nam3, Tran Manh Tri1, 1 Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam 2 Center of Advanced Technology for the Environment (CATE), Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan 3 Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam Received 11 March 2019 Revised 10 May 2019; Accepted 24 May 2019 Abstract: Contamination levels and profiles of 36 decabromo congeners of polybrominated diphenyl ethers (PBDEs) were determined in road dust samples collected from an urban area, an industrial park, and a rural commune in northern Vietnam. Concentrations of PBDEs in the road dust samples decreased gradually as follows: urban area (mean 36, range 16–55 ng/g) > industrial area (, –11 ng/g) > rural area (, – ng/g). This trend suggests a clear urban-rural gradient of environmental occurrence of PBDEs in northern Vietnam. Concentrations of PBDEs were correlated with traffic density, reflecting vehicles as important emission sources of these brominated flame retardants in the outdoor environment. BDE-209 was the most predominant congener detected in almost all the samples, accounting for 61 to 90% with an average of 78% of total PBDEs. These profiles confirm the widespread application of deca-BDE mixtures in Vietnam. Human exposure and health risk related to dust-bound PBDEs were evaluated for residents and occupationally .
