Bài viết Đánh giá nồng độ và phân bố cấp hạt trong bụi mịn () khu vực thành phố Biên Hòa, tỉnh Đồng Nai trình bày chương trình quan trắc bụi mịn tại khu vực sân bay Biên Hòa để đánh giá diễn biến nồng độ bụi mịn trong thời gian nghiên cứu. | VNU Journal of Science Earth and Environmental Sciences Vol. 38 No. 3 2022 93-100 Original Article Evaluation of Mass Concentration and Size Distribution of Fine Particles in Bien Hoa City Dong Nai Province Bui Duy Linh1 2 Hoang Anh Le1 Nghiem Xuan Truong2 Nguyen Viet Thanh1 Nguyen Thi Nang2 Nguyen Ngoc Hung1 1 VNU University of Science 334 Nguyen Trai Thanh Xuan Hanoi Vietnam 2 Department of Chemistry and Environment Vietnam-Russian Tropical Center 63 Nguyen Van Huyen Nghia Do Cau Giay Hanoi Vietnam Received 09 January 2022 Revised 08 March 2022 Accepted 08 March 2022 Abstract Air pollution is one of the most concerning environmental issues in which fine inhalable particles with diameters that are generally micrometers and smaller concentration plays a key part. Bien Hoa city contains and locates close to several large industrial zones that might create sources of polluting the local air quality. This study monitors and evaluates PM concentration trends in Bien Hoa airport of Dong Nai province. PM samples are analyzed by Scanning Electron Microscopy SEM to recognize the surface pattern and size distributions are analyzed by ImageJ software. Ten samples of were obtained from sampling collected in October 2021. The results show that 24-h mass concentrations were from µg m3 - µg m3 with an average of µg m3 median of µg m3 and standard deviation of µg m3. The values are lower than the Vietnam National Technical Regulation on Ambient Air Quality QCVN 05 2013 BTNMT but far higher than the recommended values of the World Health Organization WHO . SEM and image results indicate the distributions of the particles of - µm are minor where the majority are particles with aerodynamic diameter µm. Keywords Air pollution Fine particulate matters Size distribution Bien Hoa Dong Nai. 1 _ Corresponding author. E-mail address leha@ https 2588-1094 93 94 B. D. Linh
