The problem of identifying arsenic anomalies in the basin of Sahand dam through risk-based ‘soft modelling’

Nadiri, Ata Allah; Aghdam, Fariba Sadeghi; Khatibi, Rahman; Moghaddam, Asghar Asghari

doi:10.1016/j.scitotenv.2017.08.027

Cited by 27 publications

(5 citation statements)

References 43 publications

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“…The rating values of the topography for most parts of the study area ranged between 9 and 10. In addition, small parts that fall within the regression area had a rating value of 5, as shown in Figure (9).…”

Section:  Soil Media (S)mentioning

confidence: 99%

“…Vulnerability maps are used to determine the area of potential groundwater pollution. To keep the groundwater from pollution, groundwater vulnerability assessment can act as the most helpful and realistic tool [3,4,5,6,7,8,9]. Vulnerability is defined as the natural failure to protect groundwater against the risks of pollution due to the local hydrogeological conditions [10].…”

Section: Introductionmentioning

confidence: 99%

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Identification of Vulnerable Zones for Groundwater Using a GIS-based DRASTIC Technique in Shwan Sub-basin/North-Iraq

Al-Hayali

Al-Tamimi

Hamamin

2021

eijs

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Groundwater is considered as one of the most important sources of fresh-water, on which many regions around the world depend, especially in semi-arid and arid regions. Protecting and maintaining groundwater is a difficult process, but it is very important to maintain an important source of water. The current study aims to assess the susceptibility of groundwater to pollution using the DRASTIC model along with the GIS environments and its tool boxes. A vulnerability map was created by relying on data collected from 55 wells surveyed by the researchers as well as archived records from governmental institutions and some international organizations. The results indicate that the region falls into three vulnerability functional zones , namely very low, low and medium. Fortunately, most of the region is in a very low - low range (89-125) which covers approximately 94.6% of total area of the region, while the medium zone (125-133) forms 5.4%, as the smallest part of the total area ofregion. To reduce the risk of pollution in the medium zones of vulnerability, precautionary measures must be taken before commencing industrial or agricultural activities.

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Section:  Soil Media (S)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of Vulnerable Zones for Groundwater Using a GIS-based DRASTIC Technique in Shwan Sub-basin/North-Iraq

Al-Hayali

Al-Tamimi

Hamamin

2021

eijs

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“…In this study, the squared Euclidean distance technique was used that assembles the squares of the difference of each of the variables, thereby calculating the extent between the target clusters. Ward method has been applied for the cluster combination method (Majkic-Dursun et al 2018;Nadiri et al 2018). Principal components analysis (PCA)…”

Section: Cluster Analysismentioning

confidence: 99%

Pollution mapping in the urban segment of a tropical river: is water quality index (WQI) enough for a nutrient-polluted river?

2019

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Most of the tropical rivers of the world are being affected by multiple sources of pollution. The intensity of pollution is much bigger in the urban stretches due to discharge of untreated or partially treated sewage. A rapid and cost-effective tool is required for identification of water quality problems and their spatial variation for determining the main pollution sources and to detect relationships between various parameters. For this study, Gomti River, a major tributary of River Ganges, India, was considered which has gained substantial attention because of increasing anthropogenic pollution loads that has badly affected its water quality and ecosystem functions. The urban segment is polluted with organic substances, nutrients and heavy metals. The study provides an overview of the quality of water in the Gomti River through water quality index (WQI) and multivariate statistical techniques to check if WQI is enough for a nutrient-polluted river in the urban stretch. The study suggests that periodic monitoring and the water quality index development are not enough as it does not incorporate all the aspect of a rivers water quality. The separate assessment of nitrogenous biochemical oxygen demand, carbonaceous biochemical oxygen demand, sediment oxygen demand and the nitrification inhibition aspects are required to be integrated when developing a WQI. Present study illustrates that water quality of Gomti River has gradually worsened from upstream and downstream to middle stretch. The middle stretch was found to be most polluted as the major drains are concentrated within this stretch. Principal component analysis/factor analysis (PCA/FA) helped in obtaining and recognizing the factors/ sources accountable for river water quality differences in the study area. The findings are useful for the decisions regarding water quality management and this can also be applied for speedy and low-cost assessment of water quality of the polluted urban stretch of other tropical rivers for better environmental management and planning perspective.

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“…The abiotic sources of arsenic in the environment include geogenic (underground water, minerals and geothermal processes) and anthropogenic like mining operations, industrial processes, agricultural activities, etc. (Nadiri et al, 2018;Palma-Lara et al, 2020;Nadiri et al, 2021). Arsenic contaminated soil is a major source of arsenic exposure in humans by consuming plant-based food cultivated on these soils (Dahlawi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…These contaminated soils also contribute arsenic to groundwater and surface water resources through leaching and runoff mixed with the river, pond, etc. The geogenic contamination can be further extended by unintended human and industrial activities (Nadiri et al, 2018(Nadiri et al, , 2021. So, polluted groundwater for drinking and other household activities is a major source of arsenic exposure to humans.…”

Section: Introductionmentioning

confidence: 99%

Recent advancements in toxicology, modern technology for detection, and remedial measures for arsenic exposure: review

Kumari

Bharti

2022

Biotechnology and Genetic Engineering Reviews

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Arsenic toxicity is an important worldwide health problem of humans and animals due to environmental and occupational exposure through arsenic polluted water, air, soil and food items. It has a multifaceted health impact on animals, human beings, and the environment. Therefore, various experimental and clinical studies were undertaken and had been undergoing to understand its pathogenesis, identify the key biomarkers, medical and economic impact on the affected populations, timely detection and amelioration. However, despite these long-investigated studies, no conclusive information is available for prevention and control of arsenic toxicity, mainly due to complex epidemiology, scattered approach, and repetitive work. Hence, there is a need for literature that exclusively brings information on epidemiology, pathogenesis, and ameliorative measures of arsenic toxicity, which can help researchers and policymakers for effective future planning research and community control programs. In the above view, this article presents an extensive review on the current understanding of arsenic toxicity, detection methodologies, epidemiology, and remedial measures for the bene ts of researchers, academicians, and policy makers in controlling arsenic eco-toxicology and direction for direction futuristic research.

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The problem of identifying arsenic anomalies in the basin of Sahand dam through risk-based ‘soft modelling’

Cited by 27 publications

References 43 publications

Identification of Vulnerable Zones for Groundwater Using a GIS-based DRASTIC Technique in Shwan Sub-basin/North-Iraq

Identification of Vulnerable Zones for Groundwater Using a GIS-based DRASTIC Technique in Shwan Sub-basin/North-Iraq

Pollution mapping in the urban segment of a tropical river: is water quality index (WQI) enough for a nutrient-polluted river?

Recent advancements in toxicology, modern technology for detection, and remedial measures for arsenic exposure: review

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