Yazar "Islam, Abu Reza Md Towfiqul" seçeneğine göre listele

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    Identifying factors affecting irrigation metrics in the Haor basin using integrated Shannon?s entropy, fuzzy logic and automatic linear model
    (Academic Press Inc Elsevier Science, 2023) Mia, Md Yousuf; Islam, Abu Reza Md Towfiqul; Jannat, Jannatun Nahar; Jion, Most Mastura Munia Farjana; Sarker, Aniruddha; Tokatli, Cem; Siddique, Md Abu Bakar
    The sustainability of agricultural practices is seriously threatened by the quality of water used for irrigation. This paper aims to evaluate the suitability of irrigation water and identify the region suitable for agricultural use in the Haor basin of Bangladesh using conventional irrigation indices such as sodium adsorption ratio (SAR), percent sodium (Na%), magnesium hazard ratio (MHR), permeability index (PI), and Kelly's ratio (KR), as well as novel irrigation indices such as, Shannon's entropy index for irrigation water quality (EWQ) and fuzzy logic index for irrigation water quality (FIWQI). The main influences of groundwater and surface water parameters on irrigation indices were predicted using automatic linear modeling (ALM). Forty water samples were collected from shallow tube wells, rivers, canals, ponds, and drainage systems within agricultural land sampled and analyzed for cations and anions. SAR and KR show that 52.5% and 60% of the samples exceeded the allowable level, respectively, indicating that they were unsuitable for irrigation. According to EWQI, about 55% of the analyzed samples were of good quality, while 45% were of medium quality. ALM predicted that KR (0.98), Na% (0.87), and MHR (0.14) were the main significant factors affecting SAR and KR. ALM shows that elevated sodium, magnesium, and calcium are the most important factors affecting irrigation water suitability. The EWQI and FIWQI integrated models showed that water from nearly 30% of the sampling sites would need treatment before use. A new suitability map created by overlaying all parameters showed that surface water and some groundwater in the western and southwestern portions are suitable for agriculture. The north-central part is unsuitable for irrigation due to excessive sodium and magnesium levels. This paper will highlight the irrigation pattern for regional water resource use, identify new suitable regions, and improve sustainable agricultural practices in the Haor basin.
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    A pioneering study on health risk assessment of fluoride in drinking water in Thrace Region of northwest Turkiye
    (Elsevier, 2022) Tokatli, Cem; Islam, Abu Reza Md Towfiqul; Onur, Sirin Guener; Ustaoglu, Fikret; Islam, Md. Saiful; Dindar, Mediha Bueyuekgoze
    Fluoride has a pivotal importance in dental health and the main source of fluoride intake by humans is known as drinking water. Fluoride intake that is excessive or insufficient may have negative impacts on infants and children, including dental caries and fluorosis. The Ipsala District is located in the south-west part of Edirne City, which is a major agricultural land in Turkiye's Thrace Region. The aim of the present research was to determine the fluoride accumulations in drinking water and to assess and compare the non-carcinogenic health risks of fluoride via daily human intake in drinking water of the Ipsala District and connected villages. A total of 23 drinking water samples were collected during the wet season of 2021. The fluoride levels of villages were measured by using a spectrophotometric method, and estimated daily intake (EDI) and hazard quotient (HQ) of fluoride were calculated for all the investigated locations separately. Fluoride concentrations in Ipsala District drinking water ranged from 0.02 to 0.192 ppm. The mean EDI data in infants, children, teenagers, and adults was recorded as 0.00076, 0.00538, 0.00380, and 0.00304 ppm, respectively. All the calculated HQ values in terms of all age groups were recorded as less than the critical limit of 1, with a mean of 0.01267 for infants, 0.08972 for children, 0.06333 for teenagers, and 0.05075 for adults, which means there is no non-carcinogenic health risk in terms of fluoride accumulations in drinking water. Children are more sensitive than all the age groups in terms of health risk associated with fluoride intake from the study region. The findings of this research will aid the respective authorities in developing better policies to safeguard children from fluoride exposure.
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    Spatial-temporal variability and probabilistic health risk assessment of fluoride from lentic ecosystem, Turkiye
    (Taylor & Francis Ltd, 2023) Tokatli, Cem; Onur, Sirin Guner; Dindar, Mediha Buyukgoze; Malafaia, Guilherme; Islam, Abu Reza Md Towfiqul; Muhammad, Said
    Thrace Region is a part of the Marmara Region of Turkiye. There are many natural and artificial stagnant water habitats in the region that are used for irrigation and drinking water supply. This study is intended to determine the spatial-temporal variability and probabilistic health risk of fluoride exposure in the water of stagnant water bodies in the Thrace region. A total of 33 stagnant water bodies were selected, and water samples were collected during the dry and wet seasons of 2021-2022. The fluoride levels were measured using a spectrophotometric method (wavelength is 588 nm). The fluoride accumulations varied from 0.16-0.64 mg/L for the natural lakes, 0.04-0.74 mg/L for the reservoirs, and 0.01-0.53 mg/L for the artificial ponds. The World Health Organization (WHO) suggested a level of fluoride in drinking water of 0.5 to 1.5 mg/L. The study area had a fluoride deficiency of less than 0.5 mg/L in natural water bodies during the wet season (87.87%) and the dry season (93.93%), which might be a potential threat to dental health. Estimation Daily Intake (EDI) and Hazard Quotient (HQ) widely used health risk assessment methods were applied to the data in the current research to describe the non-carcinogenic risk of fluoride. All the calculated hazard quotient (HQ) values, both in the dry and wet seasons and in all age groups, were recorded as below 1. Both teenagers and children living in the central part of the study area are at higher risk than infants and adults. To evaluate model uncertainty, Monte Carlo simulations were employed. The outcome of the sensitivity analysis revealed that the major risks to the health of the inhabitants are the high content of fluoride and their daily intake of water.
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    Temporal variation of water quality parameters in the lacustrine of the Thrace Region, Northwest Türkiye
    (Springer Heidelberg, 2024) Tokatli, Cem; Islam, Abu Reza Md Towfiqul; Muhammad, Said
    Thrace is a part of the Marmara Region northwest of Turkiye. This region hosts several lentic ecosystems used for irrigation and drinking water supply. The present study was conducted to analyze the temporal distributions of water quality parameters (WQPs) of lentic ecosystems (lacustrine habitats), including lakes (L1-L2), reservoirs (R1-R12), and ponds (P1-P19) of the Thrace Region. Thirty-three lacustrine habitats were identified in the region. Freshwaters were collected in the wet (end of winter) and dry (end of summer) seasons of 2021-2022 and tested for 12 WQPs. Data was evaluated for the water quality index (WQI) and nutrient pollution index (NPI) and their overall quality level. For the evaluation of non-carcinogenic health risk indices of WQPs, the chronic daily index (CDI), hazard quotient (HQ), and hazard index (HI) were applied. Cluster analysis (CA), Pearson correlation index (PCI), and principal component analysis (PCA) were used to classify the lacustrine habitats and identify the source of WQPs. The average values were as follows: 9.28 mg/L for dissolved oxygen (DO), 94.6% for oxygen (O2) saturation, 9.29 for pH, 613 mu S/cm for electrical conductivity (EC), 3.96 NTU for turbidity, 358 mg/L for total dissolved solids (TDS), 3.17 mg/L for nitrate (NO3), 0.05 mg/L for nitrite (NO2), 1.01 mg/L for phosphate (PO4), 78.5 mg/L for sulfate (SO4), and 102 mg/L for chloride (Cl). Results showed a significant increase in WQPs, including NO3, NO2, and PO4, in the wet season, while the salinity decreased from the dry to wet season. Results revealed that HI values of water contaminants in lacustrine habitats were noted to be less than one. Based on determined WQPs, the present study recommends using lacustrine water habitats for irrigation, drinking, and other domestic and industrial purposes.
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    Water quality assessment of Sehriban stream (Kastamonu, TurkIye) from a multi-statistical perspective
    (Taylor & Francis Ltd, 2023) Mutlu, Ekrem; Tokatli, Cem; Islam, Abu Reza Md Towfiqul; Islam, Md. Saiful; Muhammad, Said
    In this paper, water quality of Sehriban Stream, a rare freshwater ecosystem far from human impact and located in the western part of Turkiye's Karadeniz Region, was studied over a long period of time (a hydrological year). Multivariate statistical approaches such as Pearson Correlation Index (PCI), Factor Analysis (FA), Cluster Analysis (CA) and self-organising maps (SOM) were used to evaluate the water quality and physico-chemical datasets. Samples were taken monthly during February 2019 - January 2020 from 12 stations and a total of 21 physicochemical parameters were investigated. The spatiotemporal averages of some organic pollution parameters investigated in the basin were determined as follows: 344 mu S/cm for EC, 0.80 mg/L for COD, 0.42 mg/L for BOD, 0.02 mg/L for PO42-, 34.4 mg/L for SO42-, 0.00009 mg/L for NO2, 1.36 mg/L for NO3 and 0.0002 mg/L for NH4-. According to the findings of this study, despite a modest decline in water quality from upstream to downstream, Sehriban Stream was revealed to have first-class water quality features in general and all parameters detected in all seasons at all the investigated stations were below the limit values reported by WHO. The SOM analysis detected three spatial patterns, e.g. pH-salinity-K+-PO42--Mg2+-NO2; DO-Ca2+-NH4- and TDS-EC-Cl--SO42--COD-BOD-Na+ in water. As a result of PCI, significant positive and negative correlations were recorded among the investigated parameters. Results of FA showed that 2 factors elucidated 85% of total variances, which are named 'Agricultural Factor' and 'Natural Factor'. As a result of CA, 3 significant clusters were identified, which are named 'Lower Polluted Zone', 'Moderate Polluted Zone' and 'Higher Polluted Zone'. Overall, this work showed that multi-statistical approaches can be used to assess the water quality in a rare, unpolluted habitat over time and space.