Distribution and potential ecological risk of Cu, Cd, Pb and Zn in surface water and sediment from Tianjin coastal areas of Bohai Bay, China

2015 ◽  
pp. 11-18
Keyword(s):  
Surface Water ◽  
Ecological Risk ◽  
Potential Ecological Risk ◽  
Coastal Areas ◽  
Bohai Bay ◽  
Water And Sediment

Occurrence and distribution of microplastics in the surface water and sediment of two typical estuaries in Bohai Bay, China

2019 ◽  
Vol 21 (7) ◽  
pp. 1143-1152 ◽  
Author(s):  
Nan Wu ◽  
Ying Zhang ◽  
Xiaohan Zhang ◽  
Ze Zhao ◽  
Jiahui He ◽  
...  
Keyword(s):  
Surface Water ◽  
Bohai Bay ◽  
Water And Sediment

Estuaries are considered to be seriously polluted by microplastics.

scholarly journals Assessment of Ecological and Target Hazard Risks of Mercury Contaminated Water Along Makassar Coastal Areas, Indonesia

2020 ◽  
Vol 8 (T2) ◽  
pp. 229-235
Author(s):  
Anwar Mallongi ◽  
Muh. Fajaruddin Natsir ◽  
Ratna Dwi Puji Astuti ◽  
Annisa Utami Rauf
Keyword(s):  
Surface Water ◽  
Ecological Risk ◽  
Coastal Area ◽  
Interpolation Method ◽  
Coastal Areas ◽  
Household Waste ◽  
Kriging Interpolation ◽  
Target Hazard Quotient ◽  
Waste Products ◽  
Kriging Interpolation Method

INTRODUCTION: The coastal area of Makassar city is a vulnerable area to various pollutants, most of which are generated by anthropogenic activities, such as home industry products, gold shop waste products, and household waste, starting from the coastal area in Barombong to the coastal villages in the Ujung Tanah subdistrict, with the highest level of mercury (Hg) concentration in the coastal area. Another source of potential Hg pollution in this area can be due to community activities at the fish landing base (PPI, Paotere). AIMS: The aims of this research were to analyze the Hg content in surface water collected from coastal areas of Makassar City and to analyze the target hazard risk effect due to the excessive exposure of water from the recognized as ecologically contaminated area. MATERIALS AND METHODS: This research applied an observational analytic design of cross-sectional studies. Direct measurement and laboratory sample analyses were conducted as well as a questionnaire was applied to obtain relevant, precise, and accurate data. Respondents’ characteristics related to education, habit, lifestyle, occupational smoking habits, and dietary were requested by the administered household interview questionnaire. Assay of the laboratory to analyze the magnitude of Hg in surface water was conducted. Respondents with volunteered based selected using stratified random sampling methods. RESULTS: Results of the analysis of Hg distribution in surface water used kriging interpolation method showed that the highest concentration of Hg was in stations (22 and 23) around Area of Anjungan Losari Beach and Area of Anjungan Mandar Losari with 1.0013 and 1.0012 mg/l, respectively. While the lowest were in station 2 with 0.0011 and in station 26 Pelindo Jetti area with 0.0013 mg/l, respectively. Ecological Risk assessment indicated that the areas with the highest risk of ecology were such as Near Dermaga Kayu Bangkoa with 9.8, the Tourism area of Karaeng Batjo Tomb 9.7, and Tanjung Bayang beach with risk ecology 9.1 units, respectively. Furthermore, the magnitude of Target Hazard Quotient (THQ) values were 0.0093 in station 1 in Tourism area of Karaeng Batjo Tomb and 0.0089 units in station 24 of Port of Sukarno Hatta, respectively. CONCLUSIONS: To conclude, Hg levels of contamination in water are still be tolerated in the current; however, its accumulate that potentially harmful in the near future. Ecological risk value was more than one that indicates at risks, although the THQ values are still below than the one that indicates safe.

Risk Assessment of Organochlorine Compounds in Water and Surface Sediments from Taihu Lake and Nanjing Section of Changjiang, China

2011 ◽  
Vol 356-360 ◽  
pp. 624-629 ◽  
Author(s):  
Xu Yin Yuan ◽  
Quan Liu ◽  
Ji Zhou Li ◽  
Jun Feng Ji ◽  
Chang Ping Mao
Keyword(s):  
Risk Assessment ◽  
Surface Water ◽  
Ecological Risk ◽  
Surface Sediments ◽  
Taihu Lake ◽  
Sediment Quality ◽  
Organochlorine Compounds ◽  
Quality Guidelines ◽  
Water And Sediment ◽  
Low Levels

Samples of surface water and sediment were collected in Taihu Lake and Nanjing section of Changjiang. Organochlorine compounds(OCCs) of samples were detected to investigate the characteristics and ecological risk of them in the lake and river. The concentrations of OCCs in water of Nanjing section of Changjiang were higher than those in Taihu Lake, but the concentrations of OCCs in sediments were higher in Taihu Lake. HCHs of Taihu sediments were relatively enriched, indicating the agricultural source of compounds. PCBs of Changjiang sediments were higher compared to Taihu sediments, denoting a obvious industrial source. Comparing with other compartments in China, HCHs of the study area were higher than most sediment of Chinese rivers, DDTs didn’t show high contents in sediments, PCBs was in relatively low levels. By contrast with the relevant sediment quality guidelines of these compounds, the ecological risk of OCCs in sediments were evaluated. The OCCs of sediments in Taihu Lake and Nanjing section of Changjiang didn’t show high ecological risk.

scholarly journals Microplastics in Surface Waters and Sediments from Guangdong Coastal Areas, South China

2021 ◽  
Vol 13 (5) ◽  
pp. 2691
Author(s):  
Yizheng Li ◽  
Yindan Zhang ◽  
Guanglong Chen ◽  
Kaihang Xu ◽  
Han Gong ◽  
...  
Keyword(s):  
Surface Water ◽  
Surface Waters ◽  
Large Population ◽  
Guangdong Province ◽  
Ethylene Vinyl Acetate ◽  
Pollution Load Index ◽  
Coastal Areas ◽  
Index Method ◽  
Water And Sediment ◽  
Global Pollutant

Microplastic is an emerging global pollutant that have attracted a great deal of attention from researchers and the public. Guangdong Province has a large population and a relatively well-developed economy, but lacks a modern pollution control system. Guangdong has a long coastline with varying levels of pollution, and little research has been conducted on microplastics. Therefore, we investigated the level of microplastic pollution in coastal areas of Guangdong Province, and the abundance of microplastics in surface waters and sediments at 13 sampling sites. The abundance of microplastics in surface water and sediment samples ranged from 850 to 3500 items/L and 433.3 to 4166.3 items/kg, respectively. Fiber is the main type of microplastics in both surface water and sediment. The sampled microplastics were typically transparent. Raman results show that the surface water sample mainly includes rayon (38.2%), polyethylene terephthalate (16.4%), and ethylene/vinyl acetate copolymer (12.7%). This study used the pollution load index method to evaluate the pollution risk of microplastics along the coast of Guangdong, and provided the basis for the formulation of environmental policy.

Research on Pollution Status and Risk Assessment of Environmental Hormone in Aquaculture Seawater of Shenzhen, China

2013 ◽  
Vol 807-809 ◽  
pp. 130-133 ◽  
Author(s):  
Dai Zhu Lv ◽  
Yong Jiao Tang ◽  
Hong Qiu Yuan ◽  
Jian Guo Li
Keyword(s):  
Risk Assessment ◽  
Ecological Risk ◽  
Potential Ecological Risk ◽  
Nonyl Phenol ◽  
Water And Sediment ◽  
Pollution Status ◽  
Assessment Techniques ◽  
Environmental Hormone

The concentrations of five different kinds of environmental hormone which including nonyl phenol, bis-phenol A, methyltestosterone, megestrol and diethylstilbestrol in aquaculture seawater of Shenzhen have been studied. Their risk quotients (RQ) are calculated to evaluate the risk to seawater pollution. The results showed that the RQs for the five environment hormones are nonyl phenol (0 - 0.07), bis-phenol (0-2.15), methyltestosterone (0.17), diethylstilbestrol and megestrol (not found). Bis-phenol belongs to chronic potential ecological risk in the water and sediment. The purpose is to provide clues for improving Chinese Eco-risk assessment techniques and thus to enhance security of mariculture in China.

scholarly journals Occurrence and distribution of pharmaceuticals in surface water and sediment of Buffalo and Sundays River estuaries, South Africa and their ecological risk assessment

2021 ◽  
Vol 7 ◽  
pp. 187-195
Author(s):  
Chinemerem Ruth Ohoro ◽  
Abiodun Olagoke Adeniji ◽  
Lucy Semerjian ◽  
Omobola Oluranti Okoh ◽  
Anthony Ifeanyi Okoh
Keyword(s):  
South Africa ◽  
Risk Assessment ◽  
Surface Water ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Water And Sediment

scholarly journals Comparing Levels of Some Heavy Metals in Rivers and Sediments from Two South-Western States of Nigeria

2021 ◽  
pp. 1-7
Author(s):  
Ogunti mehin ◽  
◽  
Apata o ◽  
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Contamination Factor ◽  
Atomic Absorption Spectrophotometry ◽  
Potential Ecological Risk ◽  
Pollution Load Index ◽  
Pollution Load ◽  
Metal Analysis ◽  
Water And Sediment ◽  
Standard Procedures

Ten water and ten sediment samples from both Igbokoda and Apapa in South west, Nigeria were collected between March and August, 2018 for heavy metal analysis. The study aimed at using Potential Ecological Risk (PER) index to characterize rivers sediments and waters for possible environmental impact. The sampling span industrial, domestic and recreational areas. The water and sediment grab samples were treated using standard procedures. The filtrate from sediment was made up to 50 cm3 mark with distilled water and used for seven heavy metals determination using atomic absorption spectrophotometry (AAS). Contamination factor (CF) and Pollution load index (PLI) calculated for each metal in the sediments indicate moderate contaminations. However, Cd in exception showed the highest potential ecological risk factor of 42.3 in Igbokoda. PER value of the Igbokoda sediment is 45.37 while that of Apapa sediment is 6.79. The potential risk pose by Cd alone in the sediment suggests that the Igbokoda water is unsafe for recreational and other beach activities. The recommendation from the study will suggest a proper treatment of wastewater and sewages before fluxing into both the Igbokoda and Apapa water bodies

scholarly journals Assessment of Trace Metals in Surface Water and Sediment Collected from Polluted Coastal Areas of Bangladesh

2016 ◽  
Vol 14 (4) ◽  
pp. 247-259 ◽  
Author(s):  
Mohammad Raknuzzaman ◽  
Md Kawser Ahmed ◽  
Md Saiful Islam ◽  
Md Habibullah-Al-Mamun ◽  
Masahiro Tokumura ◽  
...  
Keyword(s):  
Surface Water ◽  
Trace Metals ◽  
Coastal Areas ◽  
Water And Sediment
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