ĐÁNH GIÁ PHƠI NHIỄM HỢP CHẤT BTEX ĐỐI VỚI NGƯỜI BẢO VỆ LÀM VIỆC TẠI TẦNG HẦM ĐỖ XE Ở CÁC TÒA NHÀ CAO TẦNG HÀ NỘI = EXPOSURE ASSESSMENT OF BTEX COMPOUNDS AMONG SAFEGUARDS IN UNDERGROUND PARKING GARAGES IN HIGH BUILDINGS IN HANOI

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Tác giả: Dũng Nghiêm Trung, Võ Thị Lệ Hà, Nguyễn Thị Thu Hằng, Hiền Nguyễn Thị Thu, Nguyễn Thu Hương, Yoneda Minoru

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2020

Mô tả vật lý: tr.91-98

Bộ sưu tập: NCBI

ID: 498526

Thêm vào giỏ

Hệ thống đỗ xe nhiều tầng có khả năng phát sinh các chất có nồng độ cao BTEX ( Benzene (B), Toluene (T), Ethyl benzene (E) và Xylene (X)), là những chất gây ảnh hưởng xấu đến sức khỏe con người. Mục đích của nghiên cứu này là xác định nồng độ BTEX, nguồn phát sinh và đánh giá rủi ro sức khỏe đối những người bảo vệ làm việc tại các bãi đỗ xe hầm tại một số tòa nhà cao tầng Hà Nội. 27 mẫu khí được lấy chủ động và phân tích bằng GC/FID. Mô hình đánh giá rủi ro sức khỏe được sử dụng dựa trên liều lượng hấp thụ hàng ngày (CDI) và hệ số ung thư (SF). Benenze, Toluene, Xylene đã được phát hiện tại các hệ thống đỗ xe tầng hầm được khảo sát, loại trừ Ethyl Benenze. Nồng độ trung bình được phát hiện là 16,99 µg/m3, 200,36 µg/m3 and 625,22 µg/m3 đối với B, T và X, tương ứng. Phát thải từ xăng dầu và khí thải động cơ là hai nguồn chính đóng góp vào phát sinh BTEX. Rủi ro không ung thư đối với Toluene và Xylene là thấp do HQ <
1. Rủi ro ung thư đối với Benzene là trung bình do hệ số ung thư trọn đời vượt qua giá trị ngưỡng của EPA (10-6). Multi – storey parking structures have potentially high concentrations of benzene (B), toluene (T), ethyl benzene (E) and xylene (X), as known BTEXs, which could have adverse effects on human health This study aims to estimate BTEX levels and sources and to assess the occupational health risk for safeguards in underground parking garages in high buildings in Hanoi. 27 samples were conducted using active diffusion monitors and analyzed by a GC/FID device. Health risk assessment was conducted using chronic daily intake (CDI) and slope factor (SF). Benzene, toluene and xylene were detected in all selected parking lots. In contrast, those of ethyl benzene were not detected. The mean concentrations were 16.99 µg/m3, 200.36 µg/m3 and 625.22 µg/m3 for benzene, toluene and xylene, respectively. Petroleum vapor and vehicle emission were two main sources to contribute to BTEX compounds. Non- carcinogenic risks from toluene and xylene were low when values of hazard quotient (HQ) were lower than 1. Benzene showed upper-bound lifetime cancer risks that exceeded the US. EPA benchmark of one per million, exposing the moderate risk.

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