Browsing by Author "Azimah Ismail"

Now showing 1 - 4 of 4
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    Comparison of rainwater quality before and during the MCO using chemometric analyses
    (Springer, 2023) Nadiana Arifn; Hafzan Juahir; Roslan Umar; Mokhairi Makhtar; Nur Hanis Mohamad Hanapi; Azimah Ismail; Munirah Abdul Zali
    This study aimed to classify the spatiotemporal analysis of rainwater quality before and during the Movement Control Order (MCO) implementation due to the COVID-19 pandemic. Chemometric analysis was carried out on rainwater samples collected from 24-gauge stations throughout Malaysia to determine the samples' chemical content, pH, and conductivity.
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    Estimation of rainwater harvesting by the reflectance of the purity index of rainfall
    (Springer, 2021) Siti Nor Fazillah Abdullah; Azimah Ismail; Hafizan Juahir; Fathurrahman Lananan; Nor Muzlinda Hashim; Nadiana Ariffin; Tengku Azman Tengku Mohd
    Rainwater harvesting is an effective alternative practice, particularly within urban regions, during periods of water scarcity and dry weather. Thecollected waterr is mostly utilized for non-potable household purposes and irrigation. However, due to the increase in atmospheric pollutants, the quality of rainwater has gradually decreased. This atmospheric pollution can damage the climate, natural resources, biodiversity, and human health. In this study, the characteristics and physicochemical properties of rainfall were assessed using a qualitative approach. The three-year (2017-2019) data on rainfall in Peninsular Malaysia were analysed via multivariate techniques.
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    Spatial assessment and source identification of heavy metals pollution in surface water using several chemometric techniques
    (Elsevier, 2016) Azimah Ismail; Mohd Ekhwan Toriman; Hafizan Juahir; Sharifuddin Md Zain; Nur Liyana Abdul Habir; Ananthy Retnam; Mohd Khairul Amri Kamaruddin; Roslan Umar; Azman Azid
    This study presents the determination of the spatial variation and source identification of heavy metal pollution in surface water along the Straits of Malacca using several chemometric techniques. Clustering and discrimination of heavy metal compounds insurface water into two groups (northern and southern regions) are observed according to level of concentrations via the application of chemometric techniques.
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    Tracing sewage contamination based on sterols and stanols markers within the mainland aquatic ecosystem: a case study of Linggi catchment, Malaysia
    (Springer, 2021) Munirah Abdul Zali; Hafizan Juahir; Azimah Ismail; Ananthy Retnam; Azrul Normi Idris; Anuar Sefie; Ismail Tawnie; Syaiful Bahren Saadudin; Masni Mohd Ali
    Sewage contamination is a principal concern in water quality management as pathogens in sewage can cause diseases and lead to detrimental health effects in humans. This study examines the distribution of seven sterol compounds, namely coprostanol, epi-coprostanol, cholesterol, cholestanol, stigmasterol, campesterol, and β-sitosterol in filtered and particulate phases of sewage treatment plants (STPs), groundwater, and river water.