Metal(loid)s (As, Hg, Se, Pb and Cd) in paddy soil: Bioavailability and potential risk to human health

Khanam, Rubina; Kumar, Anjani; Nayak, A. K.; Shahid, Mohammad; Tripathi, Rahul; Vijayakumar, S; Bhaduri, Debarati; Kumar, Upendra; Mohanty, SK; Panneerselvam, P.; Chatterjee, Dibyendu; Satapathy, Bhabani Sankar; Pathak, Himanshu

doi:10.1016/j.scitotenv.2019.134330

Cited by 316 publications

(88 citation statements)

References 284 publications

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“…Among food of earthbound origin, some cereals, such as rice have As concentrations which are sometimes as high as 0.4 mg/kg dry weight [6]. The main As species in rice and other plants irrigated with As-containing water or grown on As rich soil is iAs [7,32].…”

Section: Arsenic In Foodmentioning

confidence: 99%

“…Arsenolipids, also synthesized in algae in place of phosphate, occur in the lipid phase of marine organisms and are present in various types of seafood, including cod liver oil and tuna [35,36]. Marine fish, as well as other kinds of marine seafood, contain As concentrations up to 100 mg As/kg [32]. While in marine organisms arsenobetaine is a more common arsenical [33], fresh-water organisms also contain As as arsenobetaine, but in much lower concentrations.…”

Section: Arsenic In Foodmentioning

confidence: 99%

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Arsenic Toxicity: Molecular Targets and Therapeutic Agents

et al. 2020

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High arsenic (As) levels in food and drinking water, or under some occupational conditions, can precipitate chronic toxicity and in some cases cancer. Millions of people are exposed to unacceptable amounts of As through drinking water and food. Highly exposed individuals may develop acute, subacute, or chronic signs of poisoning, characterized by skin lesions, cardiovascular symptoms, and in some cases, multi-organ failure. Inorganic arsenite(III) and organic arsenicals with the general formula R-As2+ are bound tightly to thiol groups, particularly to vicinal dithiols such as dihydrolipoic acid (DHLA), which together with some seleno-enzymes constitute vulnerable targets for the toxic action of As. In addition, R-As2+-compounds have even higher affinity to selenol groups, e.g., in thioredoxin reductase that also possesses a thiol group vicinal to the selenol. Inhibition of this and other ROS scavenging seleno-enzymes explain the oxidative stress associated with arsenic poisoning. The development of chelating agents, such as the dithiols BAL (dimercaptopropanol), DMPS (dimercapto-propanesulfonate) and DMSA (dimercaptosuccinic acid), took advantage of the fact that As had high affinity towards vicinal dithiols. Primary prevention by reducing exposure of the millions of people exposed to unacceptable As levels should be the prioritized strategy. However, in acute and subacute and even some cases with chronic As poisonings chelation treatment with therapeutic dithiols, in particular DMPS appears promising as regards alleviation of symptoms. In acute cases, initial treatment with BAL combined with DMPS should be considered.

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Section: Arsenic In Foodmentioning

confidence: 99%

Section: Arsenic In Foodmentioning

confidence: 99%

Arsenic Toxicity: Molecular Targets and Therapeutic Agents

et al. 2020

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“…During the last two decades, heavy metal contamination of soils has become a serious problem in several geographic regions worldwide, including Asian, African, and Latin American countries, where rice production and consumption is rapidly growing (Hu et al 2016). High concentrations of heavy metals are not causing toxicity problems only in plants but also in animals consuming plants and gradually deposited these metals leading to a bioaccumulation risk (Khanam et al 2020). Cd was identified as a major toxic metal that can directly reach the food chain through crop uptake or can indirectly be transferred by animals (Grant 2011;Osman et al 2015;Puga et al 2015).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

“…Several approaches have been implemented to reclaim Cd-contaminated soils including phytoremediation, which uses hyperaccumulators to uptake Cd from soil, bioremediation, chemical amendments, agricultural practices, and engineering measures like replacement with clean soils, soil washing, and flushing. In spite of considering cost and efficiency, their use on large areas of agricultural soil cannot be promoted (Khanam et al 2020;Li et al 2020;Hirzel et al 2019). The most effective and economically viable way of in situ remediation method for polluted agricultural soils is Cd immobilization with amendments.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Effects and Mechanism of Continuous Liming on Cadmium Immobilization and Uptake by Rice Grown on Acid Paddy Soils

Liu

Huang

Xiong-hui³

et al. 2020

J Soil Sci Plant Nutr

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Lime application is the most effective agricultural practice for the reduction of cadmium (Cd) bioavailability in acid soils. This study was conducted to investigate the impact of continuous liming across five consecutive growing seasons on the remediation of Cd in acid paddy soils, as well as rice yield. Two rice cultivars, i.e., Zhuliangyou 819 and Xiangwanxian 12, were cultivated in Cd-contaminated paddy soil for five consecutive growing seasons from 2014 to 2018. The investigated lime levels were 0, 450, 900, 1350, 1800, 2250, 3000, and 3750 kg ha −1. Lime application significantly increased rice yield, soil pH, exchangeable soil Ca 2+ , and rice calcium (Ca) contents; besides, it reduced soil and rice Cd contents. The application of lime at the rate of 1350-2250 kg ha −1 significantly increased rice yield. Under continuous liming, rice yield obviously increased first and then decreased with the cumulative application of lime. The application of a cumulative lime amount of 18,000 kg ha −1 was identified as the critical transition point of soil pH, soil Cd, and rice Cd content. Application of lime up to or above 3000 kg ha −1 per season reduced Cd content in brown rice below 0.20 mg kg −1. The results suggest that the reduction in effective Cd content might be a result of the combined action of exchangeable soil Ca 2+ and soil pH rather than being a direct effect of Ca 2+. Therefore, acid Cdcontaminated paddy fields can realize the safe production of rice by the continuous application of an appropriate amount of lime.

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“…Other industrial activities like the production of ammunition, batteries, pigments, and certain glasses have also contributed anthropogenic Pb inputs to the hydrosphere and the biosphere [8][9][10][11][12]. Mining activities have been contributing to the long-term release of Pb as a result of the interaction of large volumes of fine-grained Pb-ores exposed in tails interact with groundwaters and running waters [13][14][15][16][17]. Furthermore, most catastrophic emissions of Pb environments, which have caused lasting damage in subaquatic and subaerial with great impact on soil fertility and productivity and wildlife diversity, have resulted from punctual wastewaters spills in mine sites and tails [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Removal of Pb from Water: the Effectiveness of Gypsum and Calcite Mixtures

Llera¹,

Jiménez²,

Fernández-Dı́az³

2020

Preprint

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Anthropogenic lead pollution is an environmental problem that threatens the quality of soils and waters and endangers living organisms in numerous surface and subsurface habitats. Lead coprecipitation on mineral surfaces through dissolution-recrystallization processes has long term effects on lead bioavailability. Gypsum and calcite are among the most abundant and reactive rock forming minerals present in numerous geological settings. In this work, we study the interaction of slightly acidic (pHi = 5.5) Pb-bearing aqueous solutions ([Pb]i = 1 mM and 10 mM) with crystals of gypsum and /or calcite under atmospheric conditions. This interaction results in a reduction of the concentration of lead in the liquid phase due to the precipitation of newly formed Pb-bearing solid phases. The extent of this Pb removal mainly depends on the nature of the primary mineral phase involved in the interaction. Thus, when gypsum is the only solid phase initially present in the system the Pb-bearing liquid-gypsum interaction results in Pb removals in the 98-99.8 % range, regardless of [Pb]i. In contrast, when the interaction takes place with calcite, Pb removal strongly depends on [Pb]i. It reaches 99% when [Pb]i = 1 mM while it is much more modest (⁓13%) when [Pb]i = 10 mM. Interestingly, Pb-removal is maximized for both [Pb]i (99.9 % for solutions with [Pb]i = 10 mM and 99.7% for solutions with [Pb]i = 1 mM) when Pb-polluted solutions simultaneously interact with gypsum and calcite crystals. Despite the large Pb removals found in most of the cases studied, the final Pb concentration ([Pb]f) in the liquid phase always is well above the maximum permitted in drinking water (0.1 ppm), with the minimum ([Pb]f = 0.7 ppm) being obtained for solutions with [Pb]i =1 mM after their interaction with mixtures of gypsum and calcite crystals. This result suggests that integrating the use of mixtures of gypsum-calcite crystals might help to develop more efficient strategies for in-situ decontaminating Pb-polluted waters through mineral coprecipitation processes.

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Metal(loid)s (As, Hg, Se, Pb and Cd) in paddy soil: Bioavailability and potential risk to human health

Cited by 316 publications

References 284 publications

Arsenic Toxicity: Molecular Targets and Therapeutic Agents

Arsenic Toxicity: Molecular Targets and Therapeutic Agents

Effects and Mechanism of Continuous Liming on Cadmium Immobilization and Uptake by Rice Grown on Acid Paddy Soils

Removal of Pb from Water: the Effectiveness of Gypsum and Calcite Mixtures

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