HÀM LƯỢNG HYDROCACBON ĐA VÒNG THƠM (PAHs) TRONG TRẦM TÍCH ĐẦM THỊ NẠI (TỈNH BÌNH ĐỊNH)

Pham Thi Kha

doi:10.15625/1859-3097/15/3/5946

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Authors

Pham Thi Kha Institute of Marine Environment and Resources-VAST

DOI:

https://doi.org/10.15625/1859-3097/15/3/5946

Keywords:

Polycyclic aromatic hydrocarbons, gas chromatography, Thi Nai lagoon, sediment.

Abstract

Sediments in Thi Nai lagoon were collected and analysed to determine PAHs contents by gas chromatography with flame ionization detector (GC/FID). The analytic results showed that the content of total 8 PAHs ranged from 3.03 µg/kg dry weight to 113.77 µg/kg dry weight, with the average of 23.66 µg/kg dry weight. The concentration of total 8 PAHs was high in the top and middle of lagoon and low in the mouth of lagoon. However, the content of PAH congeners was lower than critical value in the National Technical Regulation on Sediment Quality (QCVN 43:2012/BTNMT). PAHs in Thi Nai lagoon were mainly with 4 - 5 rings, occupying 35.66 - 90.56% except for some stations (TN 14, TN8, TN17, TN - LT1). The initial result indicated that the source of PAHs in sediment of Thi Nai lagoon was from petrogenic.

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