التفاصيل البيبلوغرافية
| العنوان: |
Soil Cadmium Contamination and Ecological Implications in a Tropical Urban Ecosystem: A Case Study of Air Hitam Sanitary Landfill in Puchong, Malaysia. |
| المؤلفون: |
Rajoo, S. Keeren, Ismail, Ahmad, Arifin, Abdu, Karam, S. Daljit, Rosli, Zamri, Zulperi, Dzarifah, Abdullah, Rosazlin, Alvin Zheng, L. T. |
| المصدر: |
Malaysian Journal of Soil Science; Dec2023, Vol. 27, p97-110, 14p |
| مصطلحات موضوعية: |
CADMIUM poisoning, SOIL pollution, LANDFILLS, URBAN ecology, BIOGEOCHEMICAL cycles |
| مصطلحات جغرافية: |
MALAYSIA |
| مستخلص: |
Cadmium (Cd) is a mobile heavy metal that is highly toxic to almost all lifeforms. Urban eco-systems are susceptible to Cd contamination due to certain anthropogenic activities. Despite being recognised as an acutely toxic element, its biogeochemical behaviour is still poorly studied and understood, especially in urban ecosystems of tropical countries. Therefore, this study was undertaken to address this knowledge gap. This study was conducted at Air Hitam Sanitary Landfill (AHSL) in Puchong, Malaysia. Samples were collected from various abiotic and biotic factors representing the biogeochemical cycle, including soil, flora, arthropods, atmospheric deposition, leachates, and river water samples. Acid digestion using aqua regia was conducted to determine the total Cd concentration in all samples collected. Cd concentrations at AHSL were relatively high in all biotic and abiotic factors with the concentrations showing a range of 0.019 ppm to 1.568 ppm. The bulk of Cd contamination in the ecosystem was found to eventually end up in rivers. The average Cd concentration in the river samples exceeded several environmental guidelines. There was also evidence of Cd entering food chains via soil arthropods and plants. Thus, Cd poses a credible threat to inhabitants of tropical urban ecosystems. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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