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Zhu Z, Xue J, Deng Y, Chen L, Liu J. Trace metal contamination in surface sediments of intertidal zone from Qinhuangdao, China, revealed by geochemical and magnetic approaches: Distribution, sources, and health risk assessment. MARINE POLLUTION BULLETIN 2016; 105:422-429. [PMID: 26872542 DOI: 10.1016/j.marpolbul.2016.01.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 01/25/2016] [Accepted: 01/28/2016] [Indexed: 06/05/2023]
Abstract
Based on geochemical and magnetic approaches, the distribution, sources, and health risk of trace metals in surface sediments from a seashore tourist city were investigated. A significant correlation was found between magnetic susceptibility (χ) and trace metals, which suggested that levels of trace metals in the sediments can be effectively depicted by the magnetic approach. The spatial distribution of χ and trace metals matched well with the city layout with relatively higher values being found in the port and busy tourist areas. This result, together with enrichment factors (EFs) and Tomlinson pollution load index (PLI) of metals, suggested that the influence of human activities on the coastal environment was noticeable. Principal component analysis (PCA) indicated that trace metals in the sediments were derived from both anthropogenic and natural sources. Noncarcinogenic risk assessment showed that there was no potential health risk of exposure to metals by means of ingestion or inhalation.
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Affiliation(s)
- Zongmin Zhu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China; School of Earth Sciences, China University of Geosciences, Wuhan 430074, China.
| | - Junhui Xue
- School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
| | - Yuzhen Deng
- School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
| | - Lin Chen
- School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
| | - Jiangfeng Liu
- School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
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Cesar A, Lia LRB, Pereira CDS, Santos AR, Cortez FS, Choueri RB, De Orte MR, Rachid BRF. Environmental assessment of dredged sediment in the major Latin American seaport (Santos, São Paulo-Brazil): an integrated approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 497-498:679-687. [PMID: 25179961 DOI: 10.1016/j.scitotenv.2014.08.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/08/2014] [Accepted: 08/09/2014] [Indexed: 05/14/2023]
Abstract
This work offers an environmental assessment of a dredged sediment disposal area in Santos bay, situated on the central coast of the São Paulo State, Brazil. Sediment quality was evaluated through physicochemical analysis and toxicity tests of sediments collected in the disposal site and adjacent area. The physicochemical characterization of the sediments involved grain size distribution, concentrations of polycyclic aromatic hydrocarbons (PAHs), chlorinated and aromatic hydrocarbons, polychlorinated biphenyls (PCBs), pesticides, phthalates, metals and nutrients. Acute and chronic toxicity tests were employed, using amphipods (Tiburonella viscana) and sea urchins (Lythechinus variegatus), respectively. Results revealed toxicity by all the methods applied here, suggesting that the area of disposal of dredged material is significantly altered with respect to sediment quality and probably capable of generating deleterious effects on the local biota. Aiming to elucidate the association between the distinct environmental variables and the biological effects measured in laboratory, Factor Analysis was performed. Results revealed that despite most contaminant concentrations were found below the limits established by Brazilian legislation, biological effects were related to metals (chronic toxicity) and organic compounds (acute toxicity). The application of multivariate analysis proved to be particularly useful to assess and interpret the results in an integrated way, particularly due to the large number of parameters analyzed in environmental assessments, and should be applied in future studies.
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Affiliation(s)
- A Cesar
- UNIFESP, Universidade Federal de São Paulo, Depto de Ciências do Mar, Santos, SP, Brazil.
| | - L R B Lia
- UNISANTA, Universidade Santa Cecília, Laboratório de Ecotoxicologia, Santos, SP, Brazil
| | - C D S Pereira
- UNIFESP, Universidade Federal de São Paulo, Depto de Ciências do Mar, Santos, SP, Brazil; UNISANTA, Universidade Santa Cecília, Laboratório de Ecotoxicologia, Santos, SP, Brazil
| | - A R Santos
- UNISANTA, Universidade Santa Cecília, Laboratório de Ecotoxicologia, Santos, SP, Brazil
| | - F S Cortez
- UNISANTA, Universidade Santa Cecília, Laboratório de Ecotoxicologia, Santos, SP, Brazil
| | - R B Choueri
- UNIFESP, Universidade Federal de São Paulo, Depto de Ciências do Mar, Santos, SP, Brazil
| | - M R De Orte
- UNIFESP, Universidade Federal de São Paulo, Depto de Ciências do Mar, Santos, SP, Brazil
| | - B R F Rachid
- Fundação de Estudos e Pesquisas Aquáticas, São Paulo, SP, Brazil
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