Assessment of heavy metals in sediments near Hazira industrial zone at Tapti River estuary, Surat, India

In the present study, water and sediment samples were collected from Navigation Canal and from Industrial Zone South Port Said to assess heavy metals contamination. It was shown that, the highest mean concentration of heavy metals in water samples was observed in summer, and the lowest mean was observed in winter. It has been made evident that the industrialization in Industrial Zone South Port Said was responsible for the present deteriorating conditions. However, it was shown that, the highest mean concentration of heavy metals in sediment samples was observed in winter, and the lowest mean was observed in summer. Pollution status was evaluated using some indices: geo-accumulation index (Igeo), contamination factor (CF), pollution load index (PLI) and ecological risk index (RI). Based on Igeo, all metal values were unpolluted. On the basis of the values of CF, sediments are high in winter and low in summer. Metals concentrations were in the following order: Ni > Fe > Mn > Pb > Cu > Zn > Co > Cd. According to CF classification, Ni contamination was considerable. RI of winter season can be classified as moderate pollution. No pollution was classified for PLI in all seasons. The decrease in PLI and RI values were indicated dilution and dispersion of metal content with increasing distance from source areas. It is suggested that PLI can give an indication about the trend spatially and temporarily. In addition, it also provides significant data and advice to the policy and decision makers on the contamination degree of the area.

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Heavy metals in water, soils and plants in riparian wetlands in the Pearl River Estuary, South China

Procedia Environmental Sciences ◽

10.1016/j.proenv.2010.10.145 ◽

2010 ◽

Vol 2 ◽

pp. 1344-1354 ◽

Cited By ~ 42

Author(s):

Honggang Zhang ◽

Baoshan Cui ◽

Rong Xiao ◽

Hui Zhao

Keyword(s):

Heavy Metals ◽

South China ◽

River Estuary ◽

Pearl River Estuary ◽

Pearl River ◽

Riparian Wetlands ◽

The Pearl River Estuary ◽

The Pearl River

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Environmental Assessment of an Abandoned Briquette Factory – A Case Study at Nagymányok Area, Former Industrial Zone

Quaestiones Geographicae ◽

10.1515/quageo-2016-0007 ◽

2016 ◽

Vol 35 (1) ◽

pp. 69-79

Author(s):

Amade Halász ◽

József Dezső ◽

Viktoria Poor

Keyword(s):

Heavy Metals ◽

Boiler House ◽

Industrial Area ◽

Industrial Zone ◽

Equal Distribution ◽

Industrial Buildings ◽

Polycyclic Aromatic ◽

Multiple Samples ◽

The City

Abstract The study is focused on environmental assessments of impacts by former briquette factory at the Nagymányok area in South Hungary. The (former) industrial zone is located in a northern valley of the Eastern Mecsek Mountains. Until the 1990s this company was the largest briquette factory in Hungary and the demolition works are still incomplete. former investigations were based on only five samples. our sampling sites were selected on the basis of the source of the contaminations and then we covered the whole area in equal distribution. We used the A1-F6 codes for the sample places. We have started from southwest to northeast. The samples were analyzed for Total Petrol Hydrocarbons (TPHs), Polycyclic Aromatic Hydrocarbons (PAHs) and for heavy metals. The area was heavily contaminated by TPHs and moderately heavy metals (such as Cu, Cr, Zn and Pb). Highest contaminant concentrations were found around the former industrial buildings, especially between the boiler-house and the coal-pillbox. In the industrial area the mean of the detected values is below the upper limit of the legal exposure values, but among the former industrial buildings higher (e.g. toxic level) concentration values were detected in multiple samples. Based on our investigation the pollutant can be transported by wind or by water on the surface (stream bed) or underground. The hazardous material can easily reach some part of the city, therefore reclamation is necesarry.

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