Spatial occurrence and sources of PAHs in sediments drive the ecological and health risk of Taihu Lake in China

Lang, Xiulu; He, Xinghua; Wang, Yanhua; Chen, Xi; Zhang, Mingli; Zhao, Zihan; Sun, Tao

doi:10.1038/s41598-022-07507-7

Cited by 11 publications

(4 citation statements)

References 55 publications

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“…However, it could still be concluded that since the 1900s, the PAHs in the sediment core of Taihu Lake mainly came from the combustion of fossil fuels, such as coal and petroleum combustion. This conclusion was also con rmed in previous studies Lang et al 2022). The main source of PAHS in the sediments of the Taihu Lake changed around 1900s, from petroleum to combustion of fossil fuels.…”

Section: Source and In Uencing Factor Identi Cation For Sedimentary P...supporting

confidence: 90%

“…The molecular diagnostic ratio of PAH was the main method to determine the source of PAHs in samples (Yunker et al 2002;Tobiszewski et al 2012;Lang et al 2022). In this study, Ant/(Ant + Phe), Flu/(Flu + Pyr), BaA/(BaA + Chry) and IcdP/(IcdP + BghiP) were selected to assess the primary source of PAHs.…”

Section: Source and In Uencing Factor Identi Cation For Sedimentary P...mentioning

confidence: 99%

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Vertical distribution, environmental occurrence, and risk assessment of organic pollutants in lacustrine sediments in southeast China

Lang

Zhao

Chen

et al. 2023

Environ Sci Pollut Res

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To clarify environmental occurrence and ecological risks of Zhushan Bay in Taihu Lake, the characteristics of deposited organic materials (elements and 16 polycyclic aromatic hydrocarbons (∑ 16 PAHs) in a 93-cm sediment core from Taihu Lake were determined. The results showed that the values of nitrogen (N), carbon (C), hydrogen (H), and sulphur (S) ranged from 0.08%~0.3%, 0.83%~3.6%, 0.63%~1.12%, and 0.02%~0.24%, respectively. Signi cant changes in most elements at 50 cm depth due to changes in endogenous input, accompanied by algal blooms. The concentration of ∑ 16 PAHs was in a range of 1807.48 ~ 4674.83 ng g − 1 , showing a downward trend with the deepening of the depth, accompanied by uctuations. The 3-ring PAHs had obvious advantages in surface sediment. Affected by various factors, the change of PAHs concentration also mainly appeared at 50cm depth and it was estimated to occur in the 1900s. The ratio of PAH monomer and PCA results showed that the combustion of fossil fuels was the main source of PAHs in the sediments. The results of the toxicity analysis indicated that most of the PAH monomers had little impact on the ecology, and a small number of monomers were increasing year by year and close to the ERM value, which should be controlled and paid attention to.

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Section: Source and In Uencing Factor Identi Cation For Sedimentary P...supporting

confidence: 90%

Section: Source and In Uencing Factor Identi Cation For Sedimentary P...mentioning

confidence: 99%

Vertical distribution, environmental occurrence, and risk assessment of organic pollutants in lacustrine sediments in southeast China

Lang

Zhao

Chen

et al. 2023

Environ Sci Pollut Res

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“…Located in China’s most developed eastern region, the Taihu Lake Basin (TLB) covers only 0.4% of China's land but supports 4.4% of its population and contributes 9.7% of its GDP 35 . The high rates of economic development and intensive agricultural activities have accelerated the deterioration of water quality in the area 36 – 38 . As the lowest part of the basin, Taihu Lake receives a large amount of Nr.…”

Section: Introductionmentioning

confidence: 99%

Attribution and driving force of nitrogen losses from the Taihu Lake Basin by the InVEST and GeoDetector models

Tian

Zhang

et al. 2023

Sci Rep

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Quantifying temporal and spatial changes in reactive nitrogen (Nr) losses from a watershed and exploring its main drivers are the key to watershed water quality improvements. Huge Nr losses continue to threaten the safety of the water environment in the Taihu Lake Basin (TLB). Here, the InVEST and GeoDetector models were combined to estimate Nr losses in the TLB from 1990 to 2020 and explore driving forces. Different scenarios for Nr losses were compared, showing that Nr loss peaked at 181.66 × 103 t in 2000. The key factors affecting Nr loss are land use, followed by elevation, soil, and slope factors, and their mean q-values were 0.82, 0.52, 0.51, and 0.48, respectively. The scenario analysis revealed that Nr losses increased under the business-as-usual and economic development scenarios, while ecological conservation, increased nutrient use efficiency, and reduced nutrient application all contribute to a reduction in Nr losses. The findings provide a scientific reference for Nr loss control and future planning in the TLB.

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“…The IcdP concentration accounted for a large proportion of the total PAHs. There is no minimum safe level for IcdP in the environment, and therefore its presence will lead to toxic effects on organisms(Lang et al 2022;Dong et al 2014;Lorgeoux et al 2016). It is therefore recommended to strengthen the monitoring, prevention, and control of IcdP substances in the future and make corresponding emergency plans.…”

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confidence: 99%

Responses of burial characteristics of n-alkanes and polycyclic aromatic hydrocarbons in Poyang Lake, China to changes in organic matter inputs from 1886 to 2019

Tian

Chen

Zhao

et al. 2022

Preprint

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The potential influences of the increased anthropogenic stress during the Anthropocene have led to a focus on the sedimentary record in lake and estuary environments. In this study, the spatio-temporal occurrence of 16 polycyclic aromatic hydrocarbons (PAHs) and the n-alkanes from nC12–nC37 associated with organic groups (i.e., organic nitrogen (ON), organic carbon (OC), organic hydrogen (OH), and organic sulfur (OS)) in the 210Pb-dated estuary sediments of Poyang Lake were investigated and their sources and impacts were traced. The ON, OC, OS, and OH contents in the sediment cores ranged between 0.12 − 0.65%, 1 − 7.95%, 0.01 − 0.82%, and 0.03 − 1%, respectively. The age of estuarine sediment cores in Poyang Lake was measured to be 1885–2019 by the 210Pb-dating method. The 133-year sediment deposition occurred over different stages, each with its own characteristics. The PAH fluxes were in the range of 787.65–11269.18 ng cm− 2 a− 1. The high-ring PAHs were dominant, accounting for 74.02% of the total, and the main sources were biomass combustion and automobile exhaust emissions from 1885–2019 without marked change. On a centennial scale, the main n-alkane peaks were nC15, nC31, and nC33, which had an obvious odd-even predominance. The deposition flux of Σn-alkanes varied within the range of 10.33 − 213.86 µg cm− 2 a− 1. The long-chain monomers were dominant, and were found to originate from herbs. The environmental indicator analysis revealed that the restoration of forests and eutrophication of water bodies caused by human activities and a climate change from wet to drought conditions contributed to the relative contribution of autochthonous organisms and vascular plants during 1886–2019.

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Spatial occurrence and sources of PAHs in sediments drive the ecological and health risk of Taihu Lake in China

Cited by 11 publications

References 55 publications

Vertical distribution, environmental occurrence, and risk assessment of organic pollutants in lacustrine sediments in southeast China

Vertical distribution, environmental occurrence, and risk assessment of organic pollutants in lacustrine sediments in southeast China

Attribution and driving force of nitrogen losses from the Taihu Lake Basin by the InVEST and GeoDetector models

Responses of burial characteristics of n-alkanes and polycyclic aromatic hydrocarbons in Poyang Lake, China to changes in organic matter inputs from 1886 to 2019

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