Dynamics of polycyclic aromatic hydrocarbons (PAHs) in water column of Pearl River estuary (China): Seasonal pattern, environmental fate and source implication

Niu, Lixia; Cai, Huayang; Gelder, Pieter van; Luo, Peizhen; Liu, Feng; Yang, Qingshu

doi:10.1016/j.apgeochem.2017.12.014

Cited by 56 publications

(27 citation statements)

References 38 publications

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“…1575 of ions, minerals and pollutants, this is in concordance to the site of E4 and E3 stations which are near to the industrial zone of Mamonal [7]. Another important parameter is organic material, this variable is and indicator of amount of substances with organic structures that is present in the water sample.…”

Section: Physico-chemical Characterization Of Superficial Watersupporting

confidence: 80%

“…Industry and transportation are impacting strongly ecosystems and human health due to the direct contamination of coastal marine by a large number of organic compounds considered as toxics and hazardous pollutants, where polycyclic aromatic hydrocarbons (PAHs) have been the most frequently detected [4]. PAHs come from different ways, such as the incomplete combustion of fuels of maritime transportation vehicles, byproducts associated with gas production, petroleum refining and plastics, among others [7]. PHAs remediation has become a great challenge due to the distribution along the marine environment is complex, they can be found dissolved in water or adsorbed onto sediments depending on the number of aromatic rings in their molecular structure [5].…”

Section: Introductionmentioning

confidence: 99%

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Physico-chemical characterization of superficial water and sediments from Cartagena bay

Meramo¹,

Patiño-Ruiz²,

Cogollo-Herrera³

et al. 2018

ces

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The city of Cartagena (Colombia) reports a high maritime transport activity, due to its industrial zone and the location of one of the country's main export ports. This can cause the presence of environmental contaminants, such as the polycyclic aromatic hydrocarbons (PAHs). Colombian regulation (Res. 0631 of 2015) establishes a limit of 0.01 ppm for these contaminants. In this study, sediments and surface water were collected from six monitoring stations at the Bay of Cartagena. Physico-Chemical parameters, such as total organic carbon, organic matter, pH and PAHs were analyzed from these samples. Although previous studies have reported the presence of PAHs in this bay, it was not possible to determine traces of these contaminants from the samples collected in this study. However, it was observed a pH values from 7.2 to 8.3, and a maximum organic material of 89.60 mg/L for station E5. A careful analysis of these results allowed us to understand the reasons for not having found PAHs even in water samples, meaning that some properties such as the content of organic carbons, pH and particle size are affecting the stability of PAHs in the marine system, causing their migration to soils in the coastal or even in deeper points than the superficial sediments in the water columns.

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Section: Physico-chemical Characterization Of Superficial Watersupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Physico-chemical characterization of superficial water and sediments from Cartagena bay

Meramo¹,

Patiño-Ruiz²,

Cogollo-Herrera³

et al. 2018

ces

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“…Meanwhile, the temperature of November and March in this area was more favorable to the algal proliferation [4,14], and it might also be a reason for high toxin levels in sediments during these periods. Previous study had shown that temperature had a greater effect on HOCs concentrations in sediment [32], which could be explained by the water solubility, therefore, the negative correlations between LMPs incorporated in underlying sediments and the temperature are shown in results of this study. Because the sediment temperature was difficult to determine, the measured real-time temperature of the bottom seawater was used to indicate the sediment temperature.…”

Section: Resultssupporting

confidence: 59%

“…These results indicated that surface sediments of DYB were mainly of a fine-grain silt and clay composition, supporting the ability of sediment to retain LMPs. Sediment grain size may be an important factor in regulating the sedimentation, adsorption, and distribution of some pollutants [32], and the viscosity and adsorbability of the marine sediment increase as the particle size decreased [32]. However, LMP concentrations also showed no relationship with the average grain and median particle diameter of sediment (Figure S1 in the Supplementary Materials).…”

Section: Resultsmentioning

confidence: 99%

“…Kuuppo et al thought that OA and DTXs were likely sedimentation in the OM component of sediment, such as fecal pellets [8]. TOC can control the levels of polycyclic aromatic hydrocarbons (PAHs) and LMPs in the sediment, because the viscosity and adsorbability of sediment increase with increased TOC content [32,36]. In this study, the measured TOC ranged from 4–25% with an average of 14%, and TN was 0.40–1.96 with an average of 1.06, the calculated TOC/TN varied from 5.14–13.06 with a mean of 7.91, and the total toxin concentration did not show a significant correlation with TOC and TN in the sediment.…”

Section: Resultsmentioning

confidence: 99%

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Sediment as a Potential Pool for Lipophilic Marine Phycotoxins with the Case Study of Daya Bay of China

Yang

Zhang

et al. 2019

Marine Drugs

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Marine sediments can reserve many environmental pollutants. Lipophilic marine phycotoxins (LMPs) are natural toxic substances widespread in the marine environment; however, evidence of their existence in sediment is scarce. In the present study, in order to explore the occurrence and distribution characteristics of LMPs in sediment, surface sediment samples collected from a tropical area of Daya Bay (DYB) at different seasons, were analyzed using liquid chromatography with tandem mass spectrometry (LC-MS/MS). According to the results, up to six toxin compounds were detected in sediment samples from DYB, OA and DTX1 had the highest levels, followed by PTX2, homo-YTX, AZA2, and GYM. Although AZA2 and GYM were found in most of the sediment, OA, DTX1, homo-YTX, and PTX2 were the predominant toxin compounds, and PTX2 was the most ubiquitous toxin in sediment. The spatial distribution of LMP components in the sediment fluctuated with sampling times, partially according to the physical–chemical parameters of the sediment. There are likely several sources for LMPs existing in surface sediments, but it is difficult to determine contributions of a specific toxin-source in the sediment. Therefore, marine sediments may be a toxin reservoir for LMPs accumulation in benthic organisms via food chains.

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Distribution and source assessment of polycyclic aromatic hydrocarbons levels from Lake IJssel (the Netherlands) and their responses to hydrology

Niu

Gelder

2020

Water Environment Research

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Based on field efforts in Lake IJssel (the Netherlands) from 2000 to 2010, dynamics of 15 priority PAHs in suspended particulate matter (SPM) and in seawater were determined. This study examined time‐varying changes in PAH concentration and composition, apportioned potential anthropogenic sources, and quantified their linkages to hydrological factors. The sum of individual PAHs (defined as ∑15PAHs) varied widely throughout the study period in Lake IJssel, ranging from 0.76 to 9.66 mg/kg in SPM and from 0.014 to 0.136 μg/L in seawater. High molecular weight PAHs were the most abundant PAH compounds, responsible for 73%–97%. Seasonal variation in ∑15PAHs level was distinguished, peaked in late winter and early spring, and reached a minimum in summer. Over site, the heavy contamination was found at the river mouth (e.g., Genemuiden). The driving factors of SPM and water temperature controlled the fate of PAHs. Principal component analysis and diagnostic ratios suggested that PAHs may have been derived from different input sources through various transport pathways, for example, coal combustion source and petroleum source. The findings are useful for filling the knowledge gap of PAH dynamics in Lake IJssel and Wadden Sea, which exerts significant influences on lake's environment. Practitioner points HMW PAHs (4–6 rings) were the most abundant PAH compounds. Heavy contamination was found in the mouth of IJssel River. Time‐varying change in PAHs level was significantly correlated with riverine input. PAHs sources were apportioned via principal component analysis and diagnostic ratios.

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Dynamics of polycyclic aromatic hydrocarbons (PAHs) in water column of Pearl River estuary (China): Seasonal pattern, environmental fate and source implication

Cited by 56 publications

References 38 publications

Physico-chemical characterization of superficial water and sediments from Cartagena bay

Physico-chemical characterization of superficial water and sediments from Cartagena bay

Sediment as a Potential Pool for Lipophilic Marine Phycotoxins with the Case Study of Daya Bay of China

Distribution and source assessment of polycyclic aromatic hydrocarbons levels from Lake IJssel (the Netherlands) and their responses to hydrology

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