Nghiên cứu đặc điểm và sự tích lũy vi nhựa trong than bùn tại xã Thuận Nghĩa Hòa, huyện Thạnh Hóa, tỉnh Long An

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Tác giả: Quang Dũng Bạch, Công Mạnh Nguyễn, Minh Kỳ Nguyễn, Tri Quang Hưng Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khí tượng Thủy văn, 2022

Mô tả vật lý: tr.88-97

Bộ sưu tập: Metadata

ID: 329972

Thêm vào giỏ Liên kết toàn văn

Mục đích nghiên cứu được thực hiện nhằm đánh giá đặc điểm và sự tích lũy vi nhựa trong trầm tích than bùn, trường hợp nghiên cứu điển hình ở tỉnh Long An. Nghiên cứu tiến hành khảo sát thực địa và chọn lấy mẫu đại diện tại 10 vị trí khác nhau trong khu vực có các lớp than bùn thuộc địa bàn xã Thuận Nghĩa Hòa, huyện Thạnh Hóa, Long An. Các mẫu được xử lý nhằm xác định hàm lượng, kích thước hạt, màu sắc, hình dạng và định danh chủng loại vi nhựa. Mức độ nhiễm bẩn vi nhựa cho thấy hàm lượng trong than bùn tại Long An có sự dao động 0–360,0 hạt/kg. Vi nhựa có kích thước tương đối lớn, hình dạng chủ yếu là dạng mảnh (69,6%), bọt (17,4%), sợi (8,7%) và dạng film (4,3%), chúng thường có màu trắng, nước biển, xanh. Về thành phần vi nhựa được phát hiện gồm các loại như polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC) và các dạng sợi polyester
trong đó, nhựa PVC chiếm chủ yếu với tỷ lệ 70,6%. Kết quả nghiên cứu cũng cho thấy sự phân bố vi nhựa theo không gian và chỉ thị dấu hiệu tác động của con người lên hiện trạng than bùn. Do đó, về lâu dài cần có những giải pháp thích hợp nhằm quản lý, bảo vệ nguồn tài nguyên than bùn một cách hữu hiệu trước các áp lực phát triển kinh tế–xã hội.The purpose of the study was to evaluate the characteristics and accumulation of microplastics in peatland, a case study in Long An province. The study conducted field surveys and selected representative sampling sites at ten different peatland areas in Thuan Nghia Hoa commune, Thanh Hoa district, Long An province. Samples are processed to determine the content, particle size, colour, shape and identification of their microplastics. The levels of microplastic contamination showed that the average value fluctuated from 0 to 360.0 items/kg in the peatland in Long An. Microplastics had a large size, their shape was mainly in the form of the fragment (69.6%), foam (17.4%), fiber (8.7%) and film (4.3%), and they were white, aqua, blue. Regarding the types of microplastic components detected include polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC) and polyester fibers
in which, PVC mainly accounted for 70.6%. The findings also demonstrated the spatial distribution of microplastics and indicated signals of humanrelated impacts on the status quo of peatland quality. Therefore, in the long term, it is necessary to propose appropriate solutions to effectively manage and protect naturalresources (i.e., peatland) against the pressures of socio–economic development.

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