Nghiên cứu về hiện trạng ô nhiễm vi nhựa tại lưu vực sông Nhuệ, sông Đáy

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Tác giả: Hữu Thắng Nguyễn, Thị Hà Nguyễn

Ngôn ngữ: Vie

Ký hiệu phân loại: 363.7 Environmental problems

Thông tin xuất bản: Môi trường 2022

Mô tả vật lý: 39-44

Bộ sưu tập: Metadata

ID: 395010

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Chủ đề

Vi nhựa hiện đang có ở hầu hết trong môi trường đất và nước, đe dọa nghiêm trọng hệ sinh thái và ảnh hưởng không nhỏ tới sức khỏe con người... Để đánh giá về số lượng, kích thước, mầu sắc, mật độ, thành phần và nguồn gốc vi nhựa ở môi trường nước, năm 2021, nhóm nghiên cứu thuộc Khoa Môi trường - Đại học Quốc gia Hà Nội và Trung tâm Quan trắc môi trường miền Bắc đã thực hiện Chương trình quan trắc ô nhiễm vi nhựa tại 9 điểm quan trắc nước mặt (2 điểm trên sông Đáy và 7 điểm trên sông Nhuệ): Cống Liêm Mạc (LM), Nghĩa Đô (NĐ), Ba Thá (BT), Đồng Quan (ĐQ), Tế Tiêu (TT), Cống Nhật Tựu (NT), Cầu Đọ Xá (ĐX), cầu Gián Khẩu (GK) và Đền Độc Bộ (ĐB) và 5 điểm quan trắc nước thải sinh hoạt trên sông Nhuệ: 139 Nguyễn Ngọc Vũ, 163 Nguyễn Khang, 315 Nguyễn Khang, đầu đường Bưởi, giao đường Nguyễn Khang và đường Trung Yên 3 tại lưu vực sông (LVS) Nhuệ, sông Đáy. Nhóm nghiên cứu đã sử dụng hệ thống lưới có kích thước mắt lưới là 0,335 mm kéo trên bề mặt sông trong một khoảng thời gian và quãng đường nhất định để thu được các hạt nhựa có kích thước lớn hơn 0,335 mm. Kết quả thu được là số hạt trên 1 đơn vị thể tích và từ đó phân tích được thành phần các hạt vi nhựa thu được. Mẫu sau khi được lấy sẽ được bảo quản và đưa về Phòng thí nghiệm., Tóm tắt tiếng anh, Microplastics (MPs) in the environment have significantly impacted ecosystems and threatened human health. This study investigated the distribution and characteristics of MPs in the Nhue- Day River basin in Vietnam, which used to be a source of critical biodiversity and support for the economic growth of about 12 million people. The effect of seasonal variation and anthropogenic activities on the MP abundance was assessed. The findings revealed that the amount of pollution produced by MP abundance was significant in this study area. The average abundance of MPs in the dry season (754 items/m3 ) was higher than that in the rainy season (706 items/m3 ) with n=9. The range in the abundance of MPs in the dry and rainy seasons was 49-2,827 and 400-1,133 items/m3 , respectively. The MPs collected in this study were mainly small-sized particles, with a significant proportion distributed in the 0,5 - 2,0 mm size range. However, the present study showed that the relationship between MPs and environmental parameters of minor in Nhue- Day River basin. This study provides more information of MPs pollution in Vietnam's river water.

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