KHẢO SÁT CÁC ĐIỀU KIỆN THÍCH HỢP ĐỂ XÁC ĐỊNH VI NHỰA (MPs) TRONG MẪU CÁ
Tập 129 Số 1C (2020), Nghiên cứu
Tập 129 Số 1C (2020)

KHẢO SÁT CÁC ĐIỀU KIỆN THÍCH HỢP ĐỂ XÁC ĐỊNH VI NHỰA (MPs) TRONG MẪU CÁ

Nghiên cứu
https://doi.org/10.26459/hueuni-jns.v129i1C.5822
Đã xuất bản 2020-06-30
Trần Thị Ái Mỹ
Khoa Hóa, Trường Đại học Khoa học, Đại học Huế, 77 Nguyễn Huệ, Huế, Việt Nam
Phạm Thế Dũng
Khoa Hóa, Trường Đại học Khoa học, Đại học Huế, 77 Nguyễn Huệ, Thành phố Huế

Tóm tắt

Trong nghiên cứu này, các điều kiện khác nhau như các dung dịch phân hủy mẫu (axit, bazơ, H2O2), nhiệt độ và thời gian đã được khảo sát để xác định MPs trong các mẫu cá. Điều kiện phân hủy mẫu thích hợp là dung dịch KOH 10% theo tỉ lệ 10:1 v:w (10 ml KOH 10% tương ứng với 1,0 g mẫu cá) trong 48 giờ, ở 40 °C. Các dung dịch tách nổi polymer như NaI, NaCl, KCl, ZnCl2 cũng đã được khảo sát để lựa chọn. Dung dịch phù hợp để tách nổi các polymer trong dịch chiết mẫu cá sau quá trình phân hủy mẫu là NaCl 2 M. Từ các điều kiện phân tích đã chọn, xác định hàm lượng MPs trong cá nục (Decapterus lajang) cho kết quả là 1,1 ± 0,2 MPs/g mẫu ướt hay 65,4 ± 12,6/cá thể.
https://doi.org/10.26459/hueuni-jns.v129i1C.5822
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