Uncertainty analysis of water quality index (WQI) for groundwater quality evaluation: Application of Monte-Carlo method for weight allocation

Ecological Indicators, Journal Year: 2020, Volume and Issue: 117, P. 106653 - 106653

Published: July 10, 2020

Water Quality Index (WQI) have been recently used for evaluating water resources quality. This index is developed to assist the management and their allocation different purposes. The confidence in WQI evaluation required decision making. Developing involves various steps that some of them associated with uncertainties. Uncertainties sources such as quality sampling, measuring variability, operator biases are previously studied, whereas uncertainty allocated weights parameters calculating rarely studied seldomly evaluated. For first time evaluations, a framework based on Monte-Carlo method proposed assess uncertainties establishment probabilistic weight values WQI. simulation was randomly generating posterior probability density functions (PDFs) investigating throughout computation Four scenarios guidelines recommended standards these were evaluated during dry wet seasons. paper studies WQI, application 1189 groundwater samples Kerman aquifer, Iran. results showed how can provide valuable information about values. Also, revealed most variation between classes applied achieved "excellent" "unsuitable" Therefore, this practical projects making requires considerable effort appropriate weighting reliable assessment findings support judgments conditions.

Language: Английский

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Groundwater quality under land use/land cover changes: A temporal study from 2005 to 2015 in Xi’an, Northwest China

Human and Ecological Risk Assessment An International Journal, Journal Year: 2019, Volume and Issue: 26(10), P. 2771 - 2797

Published: Nov. 5, 2019

Urbanization and land use/land cover (LULC) patterns significantly affect groundwater quality. This study investigated quality LULC conversion of Xi’an City in Guanzhong Basin over ten years, from 2005 to 2015. The relationship between were also explored. Piper diagram, Gibbs self-organizing map (SOM) used investigate the hydrogeochemistry city. Remote sensing image data generated by Landsat 5 8 satellites 2005, 2010, 2015 extract those three years. These determine 2010 Entropy weighted water index (EWQI), curved streamline searchlight model (CS-SLM), multiple linear regression analysis relate diagram indicated that was mainly characterized as HCO3-Na type and/or HCO3-Ca·Mg type. dominant evolution through rock weathering water-rock interactions. SOM classified into eight clusters, revealed different spatiotemporal parameters. classification urban has expanded more than 160%, while forest agricultural areas have reduced 52.54% 83.08%, respectively, Indicated coefficient EWQI percentages types CS-SLM for wells, land, industrial had negative effects on quality, positively impacted same period. is meaningful significant because it supports sustainable development management City.

Language: Английский

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Sustainable living with risks: meeting the challenges

Human and Ecological Risk Assessment An International Journal, Journal Year: 2019, Volume and Issue: 25(1-2), P. 1 - 10

Published: Feb. 17, 2019

Environmental risks exist in many aspects, affecting the quality of our daily life. This editorial introduced background and initiative editing this special issue, summarized challenges living with faced by humans, briefly innovative contribution each paper published some concluding remarks regarding way forward to meet were finally stated. Lacking adequate datasets deal environmental uncertainties increased number emerging contaminants are two biggest humans. However, papers issue supportive valuable for seeking sustainable various risks.

Language: Английский

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Groundwater contamination risk assessment using a modified DRATICL model and pollution loading: A case study in the Guanzhong Basin of China

Chemosphere, Journal Year: 2021, Volume and Issue: 291, P. 132695 - 132695

Published: Oct. 26, 2021

Language: Английский

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Fluoride abundance and their release mechanisms in groundwater along with associated human health risks in a geologically heterogeneous semi-arid region of east India

Microchemical Journal, Journal Year: 2019, Volume and Issue: 152, P. 104304 - 104304

Published: Oct. 25, 2019

Language: Английский

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