Đặc điểm và rủi ro sức khỏe của kim loại trong bụi đường khu vực nhà máy phối trộn bê tông tại Thành phố Hồ Chí Minh

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Thị Hoa Nguyễn, Thị Quỳnh Trang Nguyễn, Tuấn Hải Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Môi trường, 2023

Mô tả vật lý: tr.54-59

Bộ sưu tập: Metadata

ID: 339893

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Nghiên cứu này được thực hiện nhằm đánh giá hàm lượng của 6 kim loại có trong mẫu bụi đường thu thập tại khu vực xung quanh nhà máy phối trộn bê tông nhằm tìm hiểu đặc trưng phân bố và đánh giá rủi ro môi trường và sức khỏe do ô nhiễm bụi đường gây ra. Nồng độ của các kim loại trong bụi đường giảm dần theo thứ tự Ca (27.912,4 mg/kg) >
Mg (7.353,9 mg/kg) >
Ti (1.367,4 mg/kg) >
Cr (56,0 mg/kg) >
Pb (22,5 mg/kg) >
As (5,7 mg/kg). Ca và Mg chiếm hơn 96% tổng lượng kim loại được khảo sát và đặc trưng cho mẫu bụi được thu thập trong khu vực nghiên cứu, chứng minh ảnh hưởng của bụi xi măng từ hoạt động phối trộn bê tông. Phân bố về không gian của các kim loại là không giống nhau và phân tích tương quan cho thấy rằng các kim loại như Pb, và As có thể đến từ nhiều nguồn khác nhau. Trong các kim loại khảo sát thì As thể hiện mức độ tích tụ kim loại, làm giàu, và chỉ số tải trọng ô nhiễm cao nhất so với các kim loại còn lại. Trẻ em được cho là nhóm có nguy cơ chịu ảnh hưởng sức khỏe cao hơn so với người lớn khi phơi nhiễm các kim loại có trong bụi đường. Trong khi đó Cr cho thấy rủi ro cao nhất về nguy cơ gây ung thư cho cả trẻ em (5.38E-4) và người lớn (4.94E-5). Nghiên cứu của này góp phần cung cấp thông tin về đặc trưng phân bố của kim loại phát sinh từ nguồn sản xuất phối trộn bê tông góp phần vào công tác quản lý ô nhiễm kim loại trong bụi đường tại TP. HCM.This study aimed to assess the levels of six metals present in road dust collected in the vicinity of a concrete mixing plant, in order to understand their distribution characteristics and evaluate the environmental and health risks associated with road dust pollution. The concentrations of metals in road dust were found to decrease in the following order: Ca (27,912.4 mg/kg) >
Mg (7,353.9 mg/kg) >
Ti (1,367.4 mg/kg) >
Cr (56.0 mg/kg) >
Pb (22.5 mg/kg) >
As (5.7 mg/kg). Ca and Mg accounted for over 96% of the total metals, indicating the influence of cement dust from concrete mixing activities. The spatial distribution of metals exhibited variations, and the correlation analysis revealed that metals such as Pb and As may originate from different sources. Among the metals analyzed, As demonstrated the highest accumulation, enrichment, and pollutant load index compared to the other metals. Children were found to be at a higher risk of health effects than adults when exposed to the metals present in road dust. Additionally, Cr exhibited the highest carcinogenic risk for both children (5.38E-4) and adults (4.94E-5). This study provides valuable insights into the distribution characteristics of metals associated with concrete mixing operations, contributing to the management of metal pollution in road dust in Ho Chi Minh City.

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