Spatial distribution and pollution evaluation of heavy metals in Yangtze estuary sediment

Liu, Ruimin; Men, Cong; Liu, Yongyan; Yu, Wenwen; Xu, Fu-Liu; Shen, Zhenyao

doi:10.1016/j.marpolbul.2016.05.060

Cited by 84 publications

(19 citation statements)

References 73 publications

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“…As street dust permeates the ecological environment by many means, such as surface runoff and atmospheric precipitation [16,17,18], heavy metals contained in street dust eventually enter the food chain, which are posing a potential risk to human health [19,20,21,22]. Many recent studies on heavy metals in street dust involved assessments of contamination levels [22,23,24], spatial distribution [11,22,24], and source identification [25,26,27]. Heavy metals in street dust have many sources [28,29,30], which can be divided into two types: natural sources and those based on human activity.…”

Section: Introductionmentioning

confidence: 99%

Spatial Characteristics of Heavy Metals in Street Dust of Coal Railway Transportation Hubs: A Case Study in Yuanping, China

Liao

2018

IJERPH

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Coal is a vital basic energy source in China, and rail serving is its major mode of transportation. Heavy metals in street dust surrounding the coal railway do harm to the environment and pose a potential risk to human health. This paper aims to identify the effects of coal transportation hubs on heavy metals in street dust. The geoaccumulation index and ecological risk index were used to assess the contamination levels of the following elements in Yuanping, Shanxi: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb), and zinc (Zn). The levels of contamination of these heavy metals in soils were compared to those in street dust, and the difference between the railway’s and mining’s impacts on dust’s heavy-metal concentrations was explored. The results indicated that Cr and Pb in street dust were mainly affected by coal railway transportation, and the interaction effect of coal railway transportation and mining was greater than either of them alone. A potential control and prevention zone for Cr and Pb extending 1 km to both sides of the railway was identified. This work proves that coal railway transportation has certain effect on heavy metals in street dust and provides a scientific approach for future environmental impact assessments of coal transportation via railway.

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Section: Introductionmentioning

confidence: 99%

Spatial Characteristics of Heavy Metals in Street Dust of Coal Railway Transportation Hubs: A Case Study in Yuanping, China

Liao

2018

IJERPH

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“…Globally, potentially toxic element pollution is considered a serious threat to aquatic ecosystems as its persistent toxicity and bioaccumulation are difficult to degrade (Alahabadi and Malvandi 2018;He et al 2019;Liu et al 2016). Potentially toxic elements, derived from both anthropogenic activities and natural processes (Zhang et al 2016;Liu et al 2019), are generally fixed onto particulate matter and accumulated in sediments (Fisher-Power et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Sources and ecological risk assessment of the seawater potentially toxic elements in Yangtze River Estuary during 2009–2018

et al. 2021

Environ Monit Assess

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The purpose of this paper is to understand the sources of potentially toxic elements (PTE) and provide some suggestions to control PTE pollution. For this purpose, data from 30 monitoring stations for 2009-2018 were used to assess the PTE concentrations of Hg, Cu, Pb, Cd, Zn, and As in the Yangtze River Estuary. The PTE concentrations varied significantly (P < 0.05) by one-way ANOVA in the ranges of 0.002-0.224 (Hg, 0.043 ± 0.032), 0-9.700 (Cu, 1.600 ± 1.000), 0-3.900 (Pb, 1.000 ± 0.700), 0.002-0.370 (Cd, 0.050 ± 1.000), 0.100-85.000 (Zn, 14.000 ± 13.000), and 0.998-3.290 μg/L (As, 1.857 ± 0.455). Generally, the PTE concentrations decreased from year to year and were consistently satisfied the "grade-one seawater" quality standard after 2014. The concentrations of Cu, Cd, Zn, and As decreased as far from inshore, while increased closer to land in the estuary. Concentrations of Pb and Hg showed differences because of local industrial and aquacultural activities. This study identified three clusters and two PTE sources and provided some constructive suggestions for pollution control in PTE.

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“…The following indices have been broadly applied to assess the degree of contamination of heavy metal contamination in sediments derived from human-made or natural sources and its potential biological effects: enrichment factor (EF), geo-accumulation index (I geo ), pollution load index (PLI), potential ecological risk factor (E i r ), modified pollution index (MPI), and more (Duodu et al 2017). In this study, I geo and E i r were used to assess heavy metal contamination of heavy in view of the strengths and weaknesses of the two methods (Liu et al 2016). The primary objectives of this study were to (1) estimate heavy metal contents (Flemming and Delafontaine 2000) and evaluate their contamination levels in typical intertidal sediment cores in China, (2) evaluate the potential ecological risks of heavy metals in sediment cores, and (3) analyze the distribution and possible sources of heavy metals in intertidal zones.…”

Section: Introductionmentioning

confidence: 99%

Vertical profile, contamination assessment of mercury and arsenic in sediment cores from typical intertidal zones of China

Wang

Pan

Han

et al. 2018

Environ Monit Assess

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The vertical profiles, contamination levels, and potential ecological risks of mercury and arsenic were studied from the sediment cores of seven typical intertidal zones, including the Liaohe River Estuary, the Jianhe River Estuary, the Dagu River Estuary, Yancheng Shoal, the Dongtan Yangtze River Estuary, Hangzhou Bay, and the Pearl River Estuary. Marine sediment quality standards, the threshold effect level (TEL), and the probable effect level (PEL) were used as guidelines to evaluate sediment quality. In addition, the geo-accumulation index (I) and potential ecological risk index ([Formula: see text]) were used to assess contamination and potential ecological risks from mercury and arsenic. The results showed that the Pearl River Estuary was moderately polluted by mercury and represented a high potential ecological risk, while other areas were uncontaminated or mildly contaminated with low or moderate potential ecological risks. The Pearl River Estuary was mildly polluted by arsenic and represented a mild potential ecological risk, while other areas were unpolluted and also posed a mild potential ecological risk.

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Spatial distribution and pollution evaluation of heavy metals in Yangtze estuary sediment

Cited by 84 publications

References 73 publications

Spatial Characteristics of Heavy Metals in Street Dust of Coal Railway Transportation Hubs: A Case Study in Yuanping, China

Spatial Characteristics of Heavy Metals in Street Dust of Coal Railway Transportation Hubs: A Case Study in Yuanping, China

Sources and ecological risk assessment of the seawater potentially toxic elements in Yangtze River Estuary during 2009–2018

Vertical profile, contamination assessment of mercury and arsenic in sediment cores from typical intertidal zones of China

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