Browsing by Author "Muhammad Raznisyafiq Razak"

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    Accumulation and risk assessment of heavy metals employing species sensitivity distributions in Linggi River, Negeri Sembilan, Malaysia
    (Elsevier, 2021) Muhammad Raznisyafiq Razak; Ahmad Zaharin Aris; Nurul Amirah Che Zakaria; Sze Yee Wee; Nur Afifah Hanun Ismail
    The constant increase of heavy metals into the aqueous environment has become a contemporary global issue of concern to government authorities and the public. The study assesses the concentration, distribution, and risk assessment of heavy metals in freshwater from the Linggi River, Negeri Sembilan, Malaysia. Species sensitivity distribution (SSD) was utilised to calculate the cumulative probability distribution of toxicity from heavy metals. The aquatic organism's toxicity data obtained from the ECOTOXicology knowledgebase (ECOTOX) was used to estimate the predictive non-effects concentration (PNEC).
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    Occurrence, abundance, and distribution of microplastics pollution: an evidence in surface tropical water of Klang River estuary, Malaysia
    (Springer, 2021) Muhammad Rozaimi Mohd Zaki; Peh Xin Ying; Azim Haziq Zainuddin; Muhammad Raznisyafiq Razak; Ahmad Zaharin Aris
    Microplastics have been considered as contaminants of emerging concern due to ubiquity in the environment; however, the occurrence of microplastics in river estuaries is scarcely investigated. The Klang River estuary is an important ecosystem that receives various contaminants from urbanised, highly populated areas and the busiest maritime centre in Selangor, Malaysia. This study investigates the abundance and characteristics of microplastics in surface water of the Klang River estuary.