Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone
In order to assess the status of heavy metal pollution on tidal flats in the Guangxi coastal zone, an investigation of seven heavy metals' contents in sediments and benthic organisms was carried out from 29 sampling stations during 2021-2022. The results showed that the average contents of heav...
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Editorial Office of Ocean Development and Management
2024-11-01
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| Series: | Haiyang Kaifa yu guanli |
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| author | ZOU Yu HUANG Yiming CHI Jiang ZHANG Jiayao MENG Peixin LIU Baolin YANG Juan |
| author_facet | ZOU Yu HUANG Yiming CHI Jiang ZHANG Jiayao MENG Peixin LIU Baolin YANG Juan |
| author_sort | ZOU Yu |
| collection | DOAJ |
| description | In order to assess the status of heavy metal pollution on tidal flats in the Guangxi coastal zone, an investigation of seven heavy metals' contents in sediments and benthic organisms was carried out from 29 sampling stations during 2021-2022. The results showed that the average contents of heavy metals in the sediments ranked in order as follows: zinc(Zn), chromium(Cr), lead(Pb), copper(Cu), arsenic(As), cadmium(Cd), and mercury(Hg). The results of Kruskal-Wallis test indicated that the contents were higher in the estuarine and aquaculture shoreline, and lower in the natural shoreline. Correlation analysis showed that most of the heavy metals in sediments were synergistic with each other and were influenced by the TOC content and particle size composition in the sedimentary environment. The Hakanson's Potential Ecological Risk Indices demonstrated that the ranking of ecological risk on heavy metal contamination in sediments was as follows: estuarine (/aquaculture) shoreline, harbor (/ecologically protected) shoreline, natural shoreline, with high risk of Cd and Hg contamination in this area. However, the average contents of heavy metals ranked differently in benthic organisms. Correlation analyses indicated that the mechanisms of uptake and enrichment of different metals in organisms may be highly variable. Moreover, the results of Kruskal-Wallis test showed that the cumulative effect of benthic organisms on heavy metals was less affected by shoreline type, but mainly related to the bioavailability of heavy metals, physiological characteristics and feeding habits of different organism groups. |
| format | Article |
| id | doaj-art-a5f14be332e245a6bd61aa81c8e56ed3 |
| institution | DOAJ |
| issn | 1005-9857 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Editorial Office of Ocean Development and Management |
| record_format | Article |
| series | Haiyang Kaifa yu guanli |
| spelling | doaj-art-a5f14be332e245a6bd61aa81c8e56ed32025-08-20T02:58:37ZzhoEditorial Office of Ocean Development and ManagementHaiyang Kaifa yu guanli1005-98572024-11-014111981101005-9857(2024)11-0098-13Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal ZoneZOU Yu0HUANG Yiming1CHI Jiang2ZHANG Jiayao3MENG Peixin4LIU Baolin5YANG Juan6Geology Institute of China Chemical Geology and Mine Burea, Nanning 530001, ChinaChina University of Geosciences Beijing, Beijing 100083, ChinaGeology Institute of China Chemical Geology and Mine Burea, Nanning 530001, ChinaChina University of Geosciences Beijing, Beijing 100083, ChinaChina University of Geosciences Beijing, Beijing 100083, ChinaChina University of Geosciences Beijing, Beijing 100083, ChinaChina University of Geosciences Beijing, Beijing 100083, ChinaIn order to assess the status of heavy metal pollution on tidal flats in the Guangxi coastal zone, an investigation of seven heavy metals' contents in sediments and benthic organisms was carried out from 29 sampling stations during 2021-2022. The results showed that the average contents of heavy metals in the sediments ranked in order as follows: zinc(Zn), chromium(Cr), lead(Pb), copper(Cu), arsenic(As), cadmium(Cd), and mercury(Hg). The results of Kruskal-Wallis test indicated that the contents were higher in the estuarine and aquaculture shoreline, and lower in the natural shoreline. Correlation analysis showed that most of the heavy metals in sediments were synergistic with each other and were influenced by the TOC content and particle size composition in the sedimentary environment. The Hakanson's Potential Ecological Risk Indices demonstrated that the ranking of ecological risk on heavy metal contamination in sediments was as follows: estuarine (/aquaculture) shoreline, harbor (/ecologically protected) shoreline, natural shoreline, with high risk of Cd and Hg contamination in this area. However, the average contents of heavy metals ranked differently in benthic organisms. Correlation analyses indicated that the mechanisms of uptake and enrichment of different metals in organisms may be highly variable. Moreover, the results of Kruskal-Wallis test showed that the cumulative effect of benthic organisms on heavy metals was less affected by shoreline type, but mainly related to the bioavailability of heavy metals, physiological characteristics and feeding habits of different organism groups.http://www.haiyangkaifayuguanli.com/hykfyglen/ch/reader/view_abstract.aspx?file_no=20241110&flag=1guangxi coastal zoneheavy metal contaminationbio-accumulationpotential ecological risk |
| spellingShingle | ZOU Yu HUANG Yiming CHI Jiang ZHANG Jiayao MENG Peixin LIU Baolin YANG Juan Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone Haiyang Kaifa yu guanli guangxi coastal zone heavy metal contamination bio-accumulation potential ecological risk |
| title | Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone |
| title_full | Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone |
| title_fullStr | Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone |
| title_full_unstemmed | Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone |
| title_short | Characteristics of Heavy Metal Contamination in Tidal Flat Sediments and Benthic Organisms in Guangxi Coastal Zone |
| title_sort | characteristics of heavy metal contamination in tidal flat sediments and benthic organisms in guangxi coastal zone |
| topic | guangxi coastal zone heavy metal contamination bio-accumulation potential ecological risk |
| url | http://www.haiyangkaifayuguanli.com/hykfyglen/ch/reader/view_abstract.aspx?file_no=20241110&flag=1 |
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