Browsing by Author "Sze Yee Wee"

Now showing 1 - 7 of 7
  • Thumbnail Image
    ItemEmbargo
    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).
  • Thumbnail Image
    ItemEmbargo
    Active pharmaceutical ingredients in Malaysian drinking water: consumption, exposure, and human health risk
    (Springer, 2020) Sze Yee Wee; Didi Erwandi Mohamad Haron; Ahmad Zaharin Aris; Fatimah Md. Yusoff; Sarva Mangala Praveena
    Active pharmaceutical ingredients (APIs) are typical endocrine disruptors found in common pharmaceuticals and personal care products, which are frequently detected in aquatic environments, especially surface water treated for drinking. However, current treatment technologies are inefficient for removing emerging endocrine disruptors, leading to the potential contamination of tap water. This study employed an optimized analytical method comprising solid-phase extraction and liquid chromatography–tandem mass spectrometry (SPE–LC–MS/MS) to detect APIs in tap water in Putrajaya, Malaysia.
  • Thumbnail Image
    ItemEmbargo
    Ecological risk estimation of organophosphorus pesticides in riverine ecosystems
    (Elsevier, 2017) Sze Yee Wee; Ahmad Zaharin Aris
    The risk quotient (RQ) method was applied to assess the potential risk of organophosphorus pesticides (OPPs), primarily focusing on riverine ecosystems. Using the available ecotoxicity data, aquatic risks from OPPs (diazinon and chlorpyrifos) in the surface water of the Langat River, Selangor, Malaysia were evaluated based on general (RQm) and worst-case (RQex) scenarios. Since the ecotoxicity of quinalphos has not been well established, quinalphos was excluded from the risk assessment.
  • Thumbnail Image
    ItemEmbargo
    Occurance, human health risks and public awareness level of pharmaceuticals in tap water from Putrajaya (Malaysia)
    (Springer, 2020) Sarva Mangala Praveena; Maizatul Zahirah Mohd Rashid; Fauzan Adzima Mohd Nasir; Sze Yee Wee; Ahmad Zaharin Aris
    Pharmaceutical residue pollution remains as an underexplored issue, especially in Asian countries. Along with that line, the purpose of this study was to investigate the occurrence of pharmaceutical residues in tap water and its associated potential health risks, involving a total of 80 Putrajaya residents. Besides, this study also aimed to evaluate public awareness (knowledge, attitude, and practice) levels with regards to pharmaceutical handling.
  • Thumbnail Image
    ItemEmbargo
    Occurrence and potential risk of organophosphorus pesticides in urbanised Linggi River, Negeri Sembilan, Malaysia
    (Springer, 2020) Azim Haziq Zainuddin; Sze Yee Wee; Ahmad Zaharin Aris
    The application of organophosphorus pesticides (OPPs) increased gradually because of the rise in global food demand that triggered the agriculture sector to increase the production, leading to OPP residues in the surface water. This study elucidated the presence of OPPs and estimated its ecological risk in the riverine ecosystem of the urbanised Linggi River, Negeri Sembilan, Malaysia.
  • Thumbnail Image
    ItemRestricted
    Occurrence of endocrine disrupting compounds in mariculture sediment of Pulau Kukup, Johor, Malaysia
    (Elsevier, 2020) Nur Afifah Hanun Ismail; Sze Yee Wee; Didi Erwandi Mohamad Haron; Nitty Hirawaty Kamarulzaman; Ahmad Zaharin Arisa
    Endocrine-disrupting compounds (EDCs) such as hormones, pesticides, phenolic compounds, and pharmaceuticals compounds can cause adverse effects on humans, animals, and other living organisms. One of the largest mariculture areas situated in Pulau Kukup, Johor, Malaysia, is actively involved in exporting marine fish to other countries worldwide. This paper aims to provide baseline data on the level of EDC pollutants found in mariculture sediments in Malaysia since no reports have investigated this issue.
  • Thumbnail Image
    ItemEmbargo
    Surface water organophosphorus pesticides concentration and distribution in the Langat River, Selangor, Malaysia
    (Springer, 2016) Sze Yee Wee; Tuan Fauzan Tuan Omar; Ahmad Zaharin Aris; Yunho Lee
    Pesticide contamination in the environment is a contemporary global issue. As agricultural production through crop planting in Malaysia now supports both energy and food productions, the concentration and distribution of pesticides in surface water may have changed. Therefore, this study assesses the concentration and distribution of organophosphorus pesticides (quinalphos, diazinon and chlorpyrifos) contamination in the Langat River, Selangor.