Assessment of Heavy Metal Contamination and Wetland Management in a Newly Created Coastal Natural Reserve, China

Xie, Zhenglei; Zhang, Hezi; Zhao, Xiaoxiang; Du, Zheng; Xiang, Lixiong; Wang, Wei

doi:10.2112/jcoastres-d-14-00222.1

Cited by 14 publications

(7 citation statements)

References 55 publications

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“…Lead disturbs gonad secretion [12]. Copper is a necessary trace element for the human body, but if its concentration goes above the necessary amount, it is harmful to the liver, kidney, digestive system, and brain [13,14]. Zinc can cause serious damage to the digestive system, nervous system, and blood system [9,15].…”

Section: Introductionmentioning

confidence: 99%

Trace Elements Contamination and Human Health Risk Assessment in Drinking Water from the Agricultural and Pastoral Areas of Bay County, Xinjiang, China

Turdi

Yang

2016

IJERPH

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Tap water samples were collected from 180 families in four agricultural (KYR: Keyir, KRW: Kariwak, YTR: Yatur, DW: Dawanqi) and two pastoral areas (B: Bulong and Y: Yangchang) in Bay County, Xinjiang, China, and levels of seven trace elements (Cd, Cr, As Ni, Pb, Zn, Se) were analyzed using inductively-coupled plasma mass spectrometry (ICP-MS) to assess potential health risks. Remarkable spatial variations of contamination were observed. Overall, the health risk was more severe for carcinogenic versus non-carcinogenic pollutants due to heavy metal. The risk index was greater for children overall (Cr > As > Cd and Zn > Se for carcinogenic and non-carcinogenic elements, respectively). The total risk index was greater in agricultural areas (DW > KYR > YTR > KRW > B > Y). Total risk indices were greater where well water was the source versus fountain water; for the latter, the total health risk index was greater versus glacier water. Main health risk factors were Cr and As in DW, KYR, YTR, KRW, and B, and Zn, Cr, and As in the Y region. Overall, total trace element–induced health risk (including for DW adults) was higher than acceptable (10−6) and lower than priority risk levels (10−4) (KYR, YTR, KRW, Y, and B). For DW children, total health risk reached 1.08 × 10−4, higher than acceptable and priority risk levels (10−4).

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Section: Introductionmentioning

confidence: 99%

Trace Elements Contamination and Human Health Risk Assessment in Drinking Water from the Agricultural and Pastoral Areas of Bay County, Xinjiang, China

Turdi

Yang

2016

IJERPH

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“…Due to the weak exchange capacity of the water in Bohai Bay, the contaminants from surrounding industrial cities are not easy to spread. Recently, the Bohai Bay has been regarded as a main region of contaminant accumulation, especially in the sediments [37][38][39]. These studies investigated the distribution of heavy metals and assessed their contamination, and the results showed that human activates increased the accumulation of heavy metals in the sediments of Bohai Bay [25,40].…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution and Contamination Assessment of Heavy Metals in Surface Sediments of the Caofeidian Adjacent Sea after the Land Reclamation, Bohai Bay

Zhu

Bing

Huang

et al. 2018

Journal of Chemistry

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Land reclamation can significantly influence spatial distribution of heavy metals in inshore sediments. In this study, the distribution and contamination of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) in inshore sediments of Bohai Bay were investigated after the land reclamation of Caofeidian. The results showed that the concentrations of Cd, Cr, Cu, Ni, Pb, and Zn in the sediments were 0. 20-0.65, 27.16-115.70, 11.14-39.00, 17.37-65.90, 15.08-24.06, and 41.64-139.56 mg/kg, respectively. These metal concentrations were generally higher in the area of Caofeidian than in other Chinese bays and estuaries. Spatially, the concentrations of Cd, Cr, Cu, Ni, and Zn were markedly lower in the sediments close to Caofeidian compared with other regions, whereas the concentrations of Pb showed an opposite case. Hydrodynamic conditions after the land reclamation were the major factor influencing the distribution of heavy metals in the sediments. Grain sizes dominated the distribution of Cu and Zn, and organic matters and Fe/Mn oxides/hydroxides also determined the distribution of the heavy metals. Multiple contamination indices showed that the inshore sediments were moderately to highly contaminated by Cd and slightly contaminated by other heavy metals. Similarly, Cd showed a high potential ecorisk in the sediments, and other metals were in the low level. Chromium contributed to higher exposure toxicity than other metals by the toxicity unit and toxic risk index. The results of this study indicate that after the land reclamation of Caofeidian the contamination and ecorisk of heavy metals in the sediments markedly decreased in the stronger hydrodynamic areas.

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“…Therefore, the contamination of heavy metals in the sediments tended to be negligible, considering their relatively small I geo values. Little I geo values lower than 0 were also reported in different types of wetlands in the YRD [ 21 ].…”

Section: Resultsmentioning

confidence: 81%

“…Previous investigations on metal pollution in the YRD mainly focus on the marine sediments and/or sediments/soils in native plant species ( Phragmites australis , Suaeda salsa , Tamarix chinensis, etc.) communities [ 9 , 14 , 15 , 20 , 21 ]. The contamination status, distribution and ecological risks of metals in the sediments of the S. alterniflora haven’t been comprehensively discussed.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Contamination in Sediments from Wetlands Invaded by Spartina alterniflora in the Yellow River Delta

Zhang

et al. 2022

Toxics

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Heavy metals are major pollutants that pose threats to wetland environments. In the present study, surface sediments from wetlands vegetated by invasive species Spartina alterniflora in the Yellow River Delta were collected and determined for the mass fractions of Co, Ni, As, Cd and Pb. Results showed mass fractions of Co, Ni, As, Cd and Pb in the sediments of the S. alterniflora communities ranged from 8.5 to 16.0, 13.9–27.9, 3.2–13.8, 0.08–0.24, and 17.6–37.5 mg/kg dw, respectively, generally presenting an order of Pb > Ni > Co > As > Cd. The levels of heavy metals in sediments in the S. alterniflora communities were higher than those in the wetland vegetated by the native plant species Suaeda heteroptera. Correlations among metal elements were highly significant, suggesting that they might have the same sources. Clay and TOC were important factors affecting the spatial distribution of metals. The Igeo values of the investigated elements in the sediments were frequently lower than 0, revealing the slight pollution status of these metals. Relatively slight values of Eri and RI suggested that the potential ecological risks caused by the 5 metals were low. Our findings could provide a better understanding of the correlation between metal pollution and bio-invasion in wetland ecosystems.

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Assessment of Heavy Metal Contamination and Wetland Management in a Newly Created Coastal Natural Reserve, China

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 14 publications

References 55 publications

Trace Elements Contamination and Human Health Risk Assessment in Drinking Water from the Agricultural and Pastoral Areas of Bay County, Xinjiang, China

Trace Elements Contamination and Human Health Risk Assessment in Drinking Water from the Agricultural and Pastoral Areas of Bay County, Xinjiang, China

Spatial Distribution and Contamination Assessment of Heavy Metals in Surface Sediments of the Caofeidian Adjacent Sea after the Land Reclamation, Bohai Bay

Heavy Metal Contamination in Sediments from Wetlands Invaded by Spartina alterniflora in the Yellow River Delta

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