Human Health Hazards Due to Arsenic and Fluoride Contamination in Drinking Water and Food Chain

Ghosh, Gautam; Mukhopadhyay, Dipak

doi:10.1007/978-3-319-75115-3_15

Cited by 10 publications

(7 citation statements)

References 43 publications

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“…Arsenic (As) is a carcinogenic element present worldwide that harmful to every form of life (Ghosh and Mukhopadhyay, 2019). TU orchestrates redox homeostasis to impart tolerance against heavy metal stress.…”

Section: Introductionmentioning

confidence: 99%

Potential Mechanisms of Abiotic Stress Tolerance in Crop Plants Induced by Thiourea

et al. 2019

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Abiotic stresses, such as temperature extremes, drought, salinity, and heavy metals are major factors limiting crop productivity and sustainability worldwide. Abiotic stresses disturb plant growth and yield formation. Several chemical compounds, known as plant growth regulators (PGRs), modulate plant responses to biotic and abiotic stresses at the cellular, tissue, and organ levels. Thiourea (TU) is an important synthetic PGR containing nitrogen (36%) and sulfur (42%) that has gained wide attention for its role in plant stress tolerance. Tolerance against abiotic stresses is a complex phenomenon involving an array of mechanisms, and TU may modulate several of these. An understanding of TU-induced tolerance mechanisms may help improve crop yield under stress conditions. However, the potential mechanisms involved in TU-induced plant stress tolerance are still elusive. In this review, we discuss the essential role of TU-induced tolerance in improving performance of plants growing under abiotic stresses and potential mechanisms underlying TU-induced stress tolerance. We also highlight exploitation of new avenues critical in TU-induced stress tolerance.

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Section: Introductionmentioning

confidence: 99%

Potential Mechanisms of Abiotic Stress Tolerance in Crop Plants Induced by Thiourea

et al. 2019

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“…Global water pollution has become a major environmental concern worsened by progressive incorporation of heavy metals and metalloids, such as chromium, cadmium, mercury, lead, and arsenic [1]. Chronic arsenic exposure from contaminated water and food could cause severe deleterious effects on worldwide health [2,3]. The prevalent arsenic organic species in nature are the organoarsenicals and methylated forms, whereas the inorganic species comprise arsenite and arsenate [2,4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Kinetic parameters of the pseudo-first-order (PFO) model Linear model ln q e − q t = ln q e − k 1 t Eq (3). …”

mentioning

confidence: 99%

Linear and nonlinear kinetic and isotherm adsorption models for arsenic removal by manganese ferrite nanoparticles

et al. 2019

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In the present work, we analyzed the linear and nonlinear model suitabilities for adsorption data from aqueous As(III) removal by manganese ferrite nanoparticles (NPs). Hence, As(III) adsorption onto ferrite NPs was formerly analyzed by the intraparticle diffusion model (IPD). Then, adsorption kinetics was described by the pseudo-first-order (PFO), pseudosecond-order (PSO), and Elovich models, while equilibrium adsorption was fitted to the Freundlich and Langmuir isotherms. Linear and nonlinear kinetic and isotherm models were solved and compared. The nonlinear data fitting was applied through the lsqcurvefit user-defined function (Matlab ver. 7.10.0). The initial adsorption rate was influenced by intraparticle diffusion and surface or film diffusion from the arsenic bulk solution to ferrite NPs, according to the IPD model. Adsorption kinetics of As(III) on manganese ferrite NPs was better described by the PSO model, followed by the Elovich model and then the PFO model. Equilibrium adsorption data were only worthily described by the Freundlich isotherm model. While the PSO, Elovich and Freundlich linear models showed even better fit than the nonlinear models, determinant bias was depicted for the PFO and Langmuir linear models. Thus, to use nonlinear adsorption models is highly advisable, having the Matlab lsqcurvefit function been proven very useful to face such task.

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“…The more mobile and toxic As 3+ is converted to less mobile and less toxic As 5+ , by native bacterial species, in order to minimize the toxic As 3+ concentration. The risk associated with mobile arsenic contaminants lies in its bioavailability through food chain in plants, microorganisms and consequently reaching to humans [16][17][18][19][20] . It is essential to decrease the arsenic level in soil, which can further decrease its ground water leaching and subsequent plant and human exposure.…”

Section: The Need For the Remediation Of Arsenic Contaminated Sitesmentioning

confidence: 99%

Identification and Characterization of Arsenic Transforming Bacillus Species from Abandoned Mining Regions of Madhya Pradesh and Jharkhand

Bhardwaj¹,

Sharma²,

Singh³

2021

J Pure Appl Microbiol

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The arsenic (As) comprehensiveness in nature has aggravated the expansion of arsenic fortification and detoxification components in microorganisms. Many microorganisms discovered today with ability to oxidize arsenite (As3+) into arsenate (As5+) or reduce As5+ to As3+. In this study, two bacterial strains designated 3AB3 and 5AB2 was isolated from the soil samples collected from abandoned mining region of Madhya Pradesh and Jharkhand, India and arsenic concentration has been determined in both water and soil samples. Enrichment culturing method was employed for isolating bacteria and further they are screened for their redox ability. The isolated strains exhibited maximum growth at 30°C, at pH 7.0 in arsenic stressed Luria Bertani broth, checked through UV-Vis spectrophotometer at OD-620nm. Biochemical characterization of isolated strains was performed with various confirmation tests. Phylogenetic analysis of selected bacterial strains through MEGA-X confirmed their relationship to the genus Bacillus. Further, they are tested for transformation ability of arsenic (MSA method) and gene identification was done in selected isolated strains (PCR method). The result of this study shows that, even after abandoning the mining activities, concentration of arsenic increases in ground water by reducing ability of bacterial strains. PCR analysis depicted the presence of genes arsR, arsB and arsC in the strain 3AB3 and gene aoxB in 5AB2 respectively.

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Human Health Hazards Due to Arsenic and Fluoride Contamination in Drinking Water and Food Chain

Cited by 10 publications

References 43 publications

Potential Mechanisms of Abiotic Stress Tolerance in Crop Plants Induced by Thiourea

Potential Mechanisms of Abiotic Stress Tolerance in Crop Plants Induced by Thiourea

Linear and nonlinear kinetic and isotherm adsorption models for arsenic removal by manganese ferrite nanoparticles

Identification and Characterization of Arsenic Transforming Bacillus Species from Abandoned Mining Regions of Madhya Pradesh and Jharkhand

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