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1 Jinadasa, B. K. K. K. 2013. A study of trace metal levels in selected fisheries harbours in South and West coast of Sri Lanka. Journal of the National Aquatic Resources Research and Development Agency of Sri Lanka, 42:1-14.
Heavy metals ; Fisheries ; Water pollution ; Harbours ; Coastal area ; Sea water ; Mercury ; Cadmium ; Lead ; Chromium ; Nickel ; Copper ; Zinc / Sri Lanka / Tangalle / Puranawella / Mirissa / Beruwala / Mutwal / Negombo
(Location: IWMI HQ Call no: P 8157 Record No: H047150)
(1.07 MB)
Trace metals generally enter into the harbour environment through atmospheric deposition, erosion or due to anthropogenic activities such as release of industrial effluents, domestic and harbour generated sewage and oil spills. The present study was carried out to assess the levels of several trace metals, namely, Hg, Pb, Cd, Cr, Zn, Cu and Ni, in harbour basin water from six selected fisheries harbours along the Southern and Western coasts of Sri Lanka. A total of 54 samples were collected covering the areas around the harbour jetty, harbour entrance and fuel stations during the period of June to December, 2011. The level of total Hg was analyzed by cold vapour atomic absorption spectrometry (CV-AAS) and the other metals by graphite furnace atomic absorption spectrometry (GF-AAS). The trace metal concentrations in fisheries harbour basin water (n=54) varied widely. The mean concentrations ±SD (µg/L) found in the study were Hg <0.16, Pb 0.40±0.61, Cd 0.06±0.17, Cr 0.49±0.80, Zn 13.60±19.1O, Cu 4.68±8.99 and Ni 5.80± 7.98. These values are all well below the limits for estuary and harbour basin water guideline, set by European Union (EU) and the Food and Agriculture Organization (FAO).
2 Haroon, B.; Ping, A.; Pervez, A.; Faridullah; Irshad, M. 2019. Characterization of heavy metal in soils as affected by long-term irrigation with industrial wastewater. Journal of Water Reuse and Desalination, 9(1):47-56. [doi: https://doi.org/10.2166/wrd.2018.008]
Wastewater irrigation ; Industrial wastewater ; Irrigated soils ; Heavy metals ; Contamination ; Lead ; Nickel ; Manganese ; Copper ; Cadmium ; Iron ; Zinc ; Soil properties ; Fractionation ; Farmers / Pakistan / Hattar
(Location: IWMI HQ Call no: e-copy only Record No: H049121)
https://iwaponline.com/jwrd/article-pdf/9/1/47/522943/jwrd0090047.pdf
https://vlibrary.iwmi.org/pdf/H049121.pdf
https://vlibrary.iwmi.org/pdf/H049121.pdf
(0.21 MB) (216 KB)
Investigation of heavy metals (HM) fractions in soils irrigated with wastewater (WW) would ascertain their bioavailability and contamination level in soils. This study investigated HM fractions in soils after long-term WW irrigation. WW irrigation profoundly affected HM fractions in soil. The ranges of HM concentrations in soils irrigated with WW were apparently wide. All fractions were significantly higher in the fields irrigated with industrial WW than rain-fed fields. HM concentrations varied in the soils as Pb > Cu > Ni > Zn > Fe > Cd > Mn after WW irrigation. In rainfed fields, HM concentrations differed in soils as Fe > Zn > Mn > Pb > Cd > Cu > Ni. The HM fractions were dominant in the residual form followed by oxides bound and carbonate associated fractions in WW-irrigated soils. Lower contents of HM in the soil were obtained in the exchangeable fraction. WW irrigation resulted in the transformation of HM into different fractions as residual > oxide associated > carbonate associated > organically bound > exchangeable form. Repeated WW irrigation increased pH values of the soils. The higher EC of soil indicated an accumulation of salts in the soils due to WW irrigation. Mitigation of HM contamination in Hattar industrial effluent is required before irrigation.
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