Academic Publications
My Publications
2024
Perera, PLRA; Perera, WPRT; Sakunthala, KADD; Premaratne, WAPJ; Liyanage, JA
In: Journal of Multidisciplinary and Translational Research (JMTR), vol. 9, iss. 1, 2024, ISSN: 3051-5262.
Abstract | Links | BibTeX | Tags: Arsenic, Bioaccumulation, chronic kidney disease, ckd, CKDu, Contamination, E. suratensis;, Etroplus suratensis, Heavy metals, Inland Fish
@article{Perera2024d,
title = {Heavy metal bioaccumulation in Etroplus suratensis residing in inland rivers and Amblygaster sirm in marine habitats in Sri Lanka: A comparative study},
author = {PLRA Perera and WPRT Perera and KADD Sakunthala and WAPJ Premaratne and JA Liyanage},
url = {https://rajithperera.com/wp-content/uploads/2024/10/jmtr_24_102-2.pdf},
doi = {10.4038/jmtr.v9i1.18},
issn = { 3051-5262},
year = {2024},
date = {2024-06-30},
urldate = {2024-06-30},
journal = {Journal of Multidisciplinary and Translational Research (JMTR)},
volume = {9},
issue = {1},
abstract = {Inland and marine fish are primary protein sources of the Sri Lankan diet. Prolonged consumption of contaminated fish can cause critical health implications such as chronic kidney disease (CKDu). This study investigates the bioaccumulation of heavy metals in edible fish from inland rivers and coastal regions using Etroplus suratensis residing in inland rivers and Amblygaster sirm in marine habitats in Sri Lanka for the analysis. Inland fish samples were collected from Nikawewa and Mahakandarawa tanks in Kurunagala and Anuradhapura districts, respectively, while marine fish samples were collected from the coastal region near Trincomalee harbour. The analysis of heavy metal/ metalloid (i.e., Pb, Cr, As, Cd, and Ni) contents in fish samples revealed that muscle tissues of inland fish samples had significantly higher levels of Pb and Cr, exceeding the Maximum Permissible Limits (MPL). In contrast, marine fish exhibited negligible amounts of heavy metals across all tissues. Health risk assessments indicated that the Estimated Daily Intake (EDI), Total Hazard Quotient (THQ), and Carcinogenic Risk (CR) values for Pb and Cr in inland fish were significantly higher than those in marine fish, suggesting potential health risks. One-way ANOVA and Tukey's pairwise comparisons confirmed significant (p < 0.05) geographical and tissue-specific variations in heavy metal concentrations. Inland regions showed higher contamination levels than coastal regions. Gut tissues generally had the highest concentrations of heavy metals, followed by muscle, gill, and liver tissues. These findings underscore that the inland fish samples from the studied regions may pose adverse health effects, emphasizing the need for continuous monitoring and regulation to mitigate heavy metal contamination and safeguard human health.},
keywords = {Arsenic, Bioaccumulation, chronic kidney disease, ckd, CKDu, Contamination, E. suratensis;, Etroplus suratensis, Heavy metals, Inland Fish},
pubstate = {published},
tppubtype = {article}
}
Inland and marine fish are primary protein sources of the Sri Lankan diet. Prolonged consumption of contaminated fish can cause critical health implications such as chronic kidney disease (CKDu). This study investigates the bioaccumulation of heavy metals in edible fish from inland rivers and coastal regions using Etroplus suratensis residing in inland rivers and Amblygaster sirm in marine habitats in Sri Lanka for the analysis. Inland fish samples were collected from Nikawewa and Mahakandarawa tanks in Kurunagala and Anuradhapura districts, respectively, while marine fish samples were collected from the coastal region near Trincomalee harbour. The analysis of heavy metal/ metalloid (i.e., Pb, Cr, As, Cd, and Ni) contents in fish samples revealed that muscle tissues of inland fish samples had significantly higher levels of Pb and Cr, exceeding the Maximum Permissible Limits (MPL). In contrast, marine fish exhibited negligible amounts of heavy metals across all tissues. Health risk assessments indicated that the Estimated Daily Intake (EDI), Total Hazard Quotient (THQ), and Carcinogenic Risk (CR) values for Pb and Cr in inland fish were significantly higher than those in marine fish, suggesting potential health risks. One-way ANOVA and Tukey's pairwise comparisons confirmed significant (p < 0.05) geographical and tissue-specific variations in heavy metal concentrations. Inland regions showed higher contamination levels than coastal regions. Gut tissues generally had the highest concentrations of heavy metals, followed by muscle, gill, and liver tissues. These findings underscore that the inland fish samples from the studied regions may pose adverse health effects, emphasizing the need for continuous monitoring and regulation to mitigate heavy metal contamination and safeguard human health.
2022
Sampath, M; Perera, RT; Perera, PLRA; Liyanage, JA; Premaratne, WAPJ
Evaluation of toxic metal contamination in surface sediments and water in Mahakanadarawa tank; Anuradhapura, Sri Lanka Proceedings Article
In: International Conference on Applied and Pure Sciences, pp. 9, Faculty of Science, University of Kelaniya Sri Lanka, 2022.
Abstract | Links | BibTeX | Tags: ckd, CKDu, Contamination, Heavy metals, Sediment, Surface Water
@inproceedings{sampath2022evaluation,
title = {Evaluation of toxic metal contamination in surface sediments and water in Mahakanadarawa tank; Anuradhapura, Sri Lanka},
author = {M Sampath and RT Perera and PLRA Perera and JA Liyanage and WAPJ Premaratne},
url = {https://www.researchgate.net/publication/364716334_Evaluation_of_toxic_metal_contamination_in_surface_sediments_and_water_in_Mahakanadarawa_tank_Anuradhapura_Sri_Lanka},
year = {2022},
date = {2022-10-01},
urldate = {2022-01-01},
booktitle = {International Conference on Applied and Pure Sciences},
pages = {9},
publisher = {Faculty of Science, University of Kelaniya Sri Lanka},
abstract = {Toxic elements, including heavy metals/metalloids, readily contaminate water reservoirs via natural mechanisms such as surface runoff, precipitation, and atmospheric deposition. As a result, some toxic metals can be accumulated in surface sediments in the reservoirs and be incorporated into the food chains. It has become a major issue because various trace elements contaminate water, soil, and sediments, which can have serious health consequences due to their toxicity, persistence, and carcinogenic nature. This study was carried out with the aim of analysing the sediment quality in a major irrigation tank called Mahakanadarawa tank in Anuradhapura district, which is located in a high prevalence of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka. Fifteen composite sediment samples (five samples in each of fifteen different locations) were randomly collected around the Mahakanadarawa tank in April (2022). Twenty surface water samples (Triplicated) were collected from the Mahakanadarawa lake using twenty different locations. Concentrations of metal elements including Mn, Co, As, Cd, Pb, Cu, Zn, Na, K, Al, Ca, Mg, Fe, and Ni were determined using inductively coupled plasma mass spectrometry (ICP-MS) and multi-element standards were used for the instrumental calibration. Statistical analysis was done using SPSS Statistics Software. According to the analysis of the sediment samples, none of the analysed toxic metals have exceeded the severe effect level as well as the lowest effect level. Abundancy of the metals in the sediments samples is varied as Fe> Mn > Cr> Zn > Cu >Pb > Ni >Co> As> Cd. The Igeo (Geo Accumulation value) values obtained, and the index values exhibit that the sediment samples have a tendency to transfer to an unpolluted to moderately polluted stage with analysed toxic metals except for Zn and Cd. Owing to the long-term intense applications of the crop fertilisers and pesticides in the area, toxic metals may be transferred and concentrated in the tanks from the agricultural fields. Apart from that, average concentrations values of analysed metals, including toxic metals such as Pb, As, and Cd in surface water, were far below the irrigation standards. Contamination of food chains and worsening the hazardous conditions for aquatic life can occur due to the toxic metal accumulations in the surface sediments. In order to conduct a health risk assessment for the consumption of tank fish from Mahakanadarawa tank, further studies should be performed by conducting several sampling cycles of sediment and water as well as toxic metal contamination status of inland fish in Mahakanadarawa tank also need to be evaluated.},
keywords = {ckd, CKDu, Contamination, Heavy metals, Sediment, Surface Water},
pubstate = {published},
tppubtype = {inproceedings}
}
Toxic elements, including heavy metals/metalloids, readily contaminate water reservoirs via natural mechanisms such as surface runoff, precipitation, and atmospheric deposition. As a result, some toxic metals can be accumulated in surface sediments in the reservoirs and be incorporated into the food chains. It has become a major issue because various trace elements contaminate water, soil, and sediments, which can have serious health consequences due to their toxicity, persistence, and carcinogenic nature. This study was carried out with the aim of analysing the sediment quality in a major irrigation tank called Mahakanadarawa tank in Anuradhapura district, which is located in a high prevalence of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka. Fifteen composite sediment samples (five samples in each of fifteen different locations) were randomly collected around the Mahakanadarawa tank in April (2022). Twenty surface water samples (Triplicated) were collected from the Mahakanadarawa lake using twenty different locations. Concentrations of metal elements including Mn, Co, As, Cd, Pb, Cu, Zn, Na, K, Al, Ca, Mg, Fe, and Ni were determined using inductively coupled plasma mass spectrometry (ICP-MS) and multi-element standards were used for the instrumental calibration. Statistical analysis was done using SPSS Statistics Software. According to the analysis of the sediment samples, none of the analysed toxic metals have exceeded the severe effect level as well as the lowest effect level. Abundancy of the metals in the sediments samples is varied as Fe> Mn > Cr> Zn > Cu >Pb > Ni >Co> As> Cd. The Igeo (Geo Accumulation value) values obtained, and the index values exhibit that the sediment samples have a tendency to transfer to an unpolluted to moderately polluted stage with analysed toxic metals except for Zn and Cd. Owing to the long-term intense applications of the crop fertilisers and pesticides in the area, toxic metals may be transferred and concentrated in the tanks from the agricultural fields. Apart from that, average concentrations values of analysed metals, including toxic metals such as Pb, As, and Cd in surface water, were far below the irrigation standards. Contamination of food chains and worsening the hazardous conditions for aquatic life can occur due to the toxic metal accumulations in the surface sediments. In order to conduct a health risk assessment for the consumption of tank fish from Mahakanadarawa tank, further studies should be performed by conducting several sampling cycles of sediment and water as well as toxic metal contamination status of inland fish in Mahakanadarawa tank also need to be evaluated.