Mangrove Soil-Borne Trace Elements in Qi’ao Island: Implications for Understanding Terrestrial Input of Trace Elements into Part of the Pearl River Estuary

Niu, Anyi; Ma, Jiahong; Gao, Yifei; Su, Xu; Lin, Cheng‐Fang

doi:10.3390/app10072439

Cited by 6 publications

(3 citation statements)

References 35 publications

(26 reference statements)

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“…The current study showed that Cd, Zn, Cu and Pb were the dominant heavy metals at the investigated Futian mangrove soils according to their levels against the thresholds set for Class I marine sediment equality in the National Standard of China [15]. This is in good agreement with other published work showing that Cd, Cu and Zn were the major heavy metals in the Pearl River Estuary [19,20]. The more heavily contaminated status in Locations 1-4 than in Locations 5-8 was previously noted by Li et al [21] and Xu et al [16].…”

Section: Discussionsupporting

confidence: 92%

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

Ting

Cai

et al. 2020

Applied Sciences

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Field and laboratory investigations were conducted to characterize bacterial diversity and community structure in a badly contaminated mangrove wetland adjacent to the metropolitan area of a megacity in subtropical China. Next-generation sequencing technique was used for sequencing the V4-V5 region of the 16s rRNA gene on the Illumina system. Collectively, Proteobacteria, Chloroflexi, Planctomycetes, Actinobacteria and Bacteroidetes were the predominant phyla identified in the investigated soils. A significant spatial variation in bacterial diversity and community structure was observed for the investigated mangrove soils. Heavy metal pollution played a key role in reducing the bacterial diversity. The spatial variation in soil-borne heavy metals shaped the spatial variation in bacterial diversity and community structure in the study area. Other environmental factors such as total carbon and total nitrogen in the soils that are affected by seasonal change in temperature could also influence the bacterial abundance, diversity and community structure though the temporal variation was relatively weaker, as compared to spatial variation. The bacterial diversity index was lower in the investigated site than in the comparable reference site with less contaminated status. The community structure in mangrove soils at the current study site was, to a remarkable extent, different from those in the tropical mangrove wetlands around the world.

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Section: Discussionsupporting

confidence: 92%

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

Ting

Cai

et al. 2020

Applied Sciences

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“…Considering all the toxic elements in the soil, the Integrated Nemerow Pollution Index (INPI) can be calculated based on Equation (12) for each sampling station (Niu et al, 2020). 3) and class 4, highly polluted (INPI ≥ 3).…”

Section: -Pollution Load Index (Pli)mentioning

confidence: 99%

Pollution, human health risk assessment and spatial distribution of toxic metals in urban soil of Yazd City, Iran

Soltani-Gerdefaramarzi¹,

Ghasemi²,

Gheysouri

2021

Environ Geochem Health

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“…The Contamination Degree (C D ) includes the total PI for each element (Nazzal et al, 2013) Considering all the toxic elements in the soil, the Integrated Nemerow Pollution Index (INPI) can be calculated based on Equation ( 12) for each sampling station (Niu et al, 2020).…”

Section: = ∑ =1mentioning

confidence: 99%

Pollution, human health risk assessment and spatial distribution of toxic metals in urban soil of Yazd City, Iran

Soltani-Gerdefaramarzi

Ghasemi

Gheisouri

2021

Preprint

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Heavy metal pollution significantly reduces the quality of the environment and threatens human health especially in industrial cities. This study investigated toxic metals concentrations, pollution levels and human health risks assessment of urban soils in Yazd city, as an industrial city in center of Iran. Soil surface samples (0–10 cm) were collected from 30 points in the area for geochemical analysis. The concentrations of heavy metals were determined using an inductively coupled plasma mass spectrometry (ICP-MS).The values of the mean concentrations of toxic metals (mg kg− 1) in the urban soils decrease in the order of Zn (83.9) > Pb (34.5) > Cr (32.6) > Cu (23.5) > Ni (23.4) > As (5.86) > Co (4.86) > Cd (0.27). The mean concentration of Zn, Pb, As and Cd elements were higher than the background and the crust values. A pollution assessment by Geo-accumulation Index (Igeo), Pollution Index (PI), Contamination Degree (CD), the Integrated Pollution Index (IPI), the Pollution Load Index (PLI) and Integrated Nemerow Pollution Index (INPI) showed that As, Cd and Pb were moderately enriched and the study area polluted considerably by these toxic metals. Based on PI results, 88.9% of the urban soil samples highly polluted by As. Overall, the quality of the urban soil in Yazd city is clearly affected by toxic metals. Due to the prevailing wind direction, the route of the north-south highway of Iran and the population density and traffic of the northwestern and southern areas of the study area were found the highest level of pollution indicators (IPI > 1.8; LPI > 1.3; CD >15 and INPI > 4.3). The results of Pearson correlation analysis indicated that all pollution evaluation indicators were influenced by As and Cu, and showed high significant correlation with these two elements, while neither of them had a significant relationship with Pb and was found also a weak link statistically with Cd. Health Risk assessment of toxic metals has been performed in both carcinogenic and non-carcinogenic sectors. The results indicate that oral intake is the main pathway that toxic metals can harm human health for both the child and adults. The carcinogenic risks (RI) of adults and child by toxic metals were as follows: Ni > Pb > Cr > As > Cd. Hazard quotients (HQ) and hazard index (HI) values for child also were higher than these for adults. Generally, the results demonstrated that the potential carcinogenic health risks for adults of toxic metals was in an acceptable range in study area whereas for Cr, Ni and Pb with RI > 10− 4, the risk of cancer in child probably increase.

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Mangrove Soil-Borne Trace Elements in Qi’ao Island: Implications for Understanding Terrestrial Input of Trace Elements into Part of the Pearl River Estuary

Cited by 6 publications

References 35 publications

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

Pollution, human health risk assessment and spatial distribution of toxic metals in urban soil of Yazd City, Iran

Pollution, human health risk assessment and spatial distribution of toxic metals in urban soil of Yazd City, Iran

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