Occurrence, sources, bioaccumulation, and air-water exchange fluxes of polycyclic aromatic hydrocarbons in Lake Hongze, China

	Occurrence, sources, bioaccumulation, and air-water exchange fluxes of polycyclic aromatic hydrocarbons in Lake Hongze, China
	Wu, Zifan; Tao, Yuqiang
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2021
卷号	21 期号:8 页码:2969-2980
英文摘要	Purpose Compared with deep oligotrophic waters, the distribution and geochemical processes of polycyclic aromatic hydrocarbons (PAHs) in shallow eutrophic waters are more complicated. The fourth largest freshwater lake in China (Lake Hongze) was taken as an example to study distribution, sources, bioaccumulation, and air-water exchange of PAHs in shallow eutrophic waters. Materials and methods Eighty samples of surface sediments, air, water, and plankton were collected simultaneously from 15 sampling sites in November 2018. PAHs were extracted, concentrated, and analyzed using GC-MS. Results and discussion Average concentrations of n-ary sumation PAH(16) in the surface sediments, atmosphere, water, phytoplankton, zooplankton, and suspended particle matter were 511 +/- 212 ng g(-1), 119 ng m(-3), 232 +/- 91.2 ng L-1, 12,500 +/- 70,000 ng g(-1), 102,000 +/- 83,600 ng g(-1), and 35,100 +/- 24,700 ng g(-1). Log BCF of PAHs in phytoplankton ranged from 6.7 +/- 7.8 to 16.0 +/- 4.4. Log BAF of PAHs in zooplankton ranged from 8.2 +/- 8.1 to 16.8 +/- 3.9. Log BMF of PAHs from phytoplankton to zooplankton varied from - 0.25 +/- 0.39 to 0.25 +/- 0.55. Conclusions Combustion of petroleum and coal was the main source for the PAHs in the surface sediments of Lake Hongze. Concentrations of PAHs in phytoplankton and zooplankton were negatively correlated to the trophic level index. Bioaccumulation of PAHs by plankton was observed. No biomagnification occurred from phytoplankton to zooplankton for most PAHs during this sampling period. The net air-water flux of low molecular weight PAHs was from water to air. The net air-water flux of high molecular weight PAHs was from air to water.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20501]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Wu, Zifan,Tao, Yuqiang. Occurrence, sources, bioaccumulation, and air-water exchange fluxes of polycyclic aromatic hydrocarbons in Lake Hongze, China[J]. JOURNAL OF SOILS AND SEDIMENTS,2021,21(8):2969-2980.
APA	Wu, Zifan,&Tao, Yuqiang.(2021).Occurrence, sources, bioaccumulation, and air-water exchange fluxes of polycyclic aromatic hydrocarbons in Lake Hongze, China.JOURNAL OF SOILS AND SEDIMENTS,21(8),2969-2980.
MLA	Wu, Zifan,et al."Occurrence, sources, bioaccumulation, and air-water exchange fluxes of polycyclic aromatic hydrocarbons in Lake Hongze, China".JOURNAL OF SOILS AND SEDIMENTS 21.8(2021):2969-2980.