Determination of Suitable Extractant for Estimating Plant Available Arsenic in Relation to Soil Properties and Predictability by Solubility-FIAM

Raj, Akanksha; Mandal, Jajati; Golui, Debasis; Sihi, Debjani; Dari, Biswanath; Kumari, Pragyan; Ghosh, Mainak; Ganguly, Pritam

doi:10.1007/s11270-021-05215-y

Cited by 8 publications

(6 citation statements)

References 30 publications

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“…The problem with CaCl 2 is the presence of chloride. The existence of chloride (Cl) in nal prepared samples leads to polyatomic ions 40 Ar 35 Cl and 35 Cl 16 O formation in a smaller concentration of As in samples and hamper its determination in ICP-MS. Thus an acidbased extractant may be a suitable option for As determination in ICP-MS. Further, some studies suggested that due to higher viscosity and variation in surface tension of H 3 PO 4 and H 2 SO 4 , changes in droplet size distribution and nebulization e ciency reduce the signal intensity in ICP-OES (Yoshimura et al, 1990).…”

Section: Arsenic Extracted With Different Extractantsmentioning

confidence: 99%

“…Some reports have correlated bioaccessible As with in-vitro analysis or human oral bioaccessibility of As (Bari et al, 2021;Li et al, 2015;Fernández-Caliani et al, 2019). A few studies have set out to derive relationships between forms of As in soils and plant As content (Raj et al, 2021;Yu et al, 2016). Therefore, a suitable analytical approach is necessary to assess readily available forms of As in soil.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Different Extractants to Estimate Bioavailable Arsenic in Soil

Mishra

Datta

Golui

et al. 2023

Communications in Soil Science and Plant Analysis

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Owing to the similar chemistry of phosphorus (P) and arsenic (As), sodium bicarbonate (0.5 N NaHCO 3 ) is commonly used to extract plant accessible As in soil. However, 0.5 N NaHCO 3 is not compatible with the ICP-MS measurement due to the large amount of dissolved solids. This investigation set out to devise a suitable extractant for determining extractable As in soil and measured by the ICP-MS. Paired soil and plant samples were collected from paddy elds in West Bengal, India. Soil was extracted with 0.5 M NaHCO 3 , 0.03 M (0.1 N) and 0.17 M (0.5 N) phosphoric acid (H 3 PO 4 ), 0.05 M (0.1 N) and 0.25 M (0.5 N) sulfuric acid (H 2 SO 4 ), and 0.01 M calcium chloride (CaCl 2 ). This made it possible to measure As by hydride generation-atomic absorption spectrophotometer (HG-AAS), while ICP-MS was used for the determination of As extracted from soil with different concentrations (0.1-1.5M) of HNO 3 . The NaHCO 3 extractable As was 1.45 and 1.23 mg kg − 1 for soil to extractant ratio of 1:20 and 1:5, respectively. Of these extractants, 1.5 N HNO 3 extractable As had the best correlation with As content in rice grain (r = 0.45**) and straw (r = 0.71**), comparable with standard extractant i.e. 0.5 N NaHCO 3 (r = 0.47** and r = 0.64** in case of grain and straw, respectively). A signi cant positive relationship of 1.5 N HNO 3 was obtained with 0.5 N NaHCO 3 . Thus, 1.5 N HNO 3 may serve as an extractant for soil As, which is compatible with ICP-MS analysis.The extractants to remove bioavailable As from soil is 0.5 N NaHCO 3 (1:20) but it is not compatible with ICP-MS estimation of As due to its high salt content.This study evaluated soil properties, different acids and salt extractants, and their correlation with plant As content. Arsenic extracted with most common extractant 0.5 N NaHCO 3 (1:20) was 1.45 mg kg − 1 while 1.5 N HNO 3 extractable As was 1.42 mg kg − 1 . A more or less similar amount of As is extracted from soil by both extractants. Further correlation analysis revealed that pH has a positive correlation while OC content has a negative correlation with grain and straw As content. A relatively higher correlation was observed with grain and straw As content with 0.5 N NaHCO 3 (1:20), followed by 1.5 N HNO 3 . The highest correlation was observed between 0.5 N NaHCO 3 (1:20) extractable As and 1.5 N HNO 3 extractable As. Nitric acid is relatively compatible with ICP-MS. Thus, 1.5 N HNO 3 may be used as a suitable extractant for extracting bioavailable As and subsequent estimation in ICP-MS.

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Section: Arsenic Extracted With Different Extractantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Extractants to Estimate Bioavailable Arsenic in Soil

Mishra

Datta

Golui

et al. 2023

Communications in Soil Science and Plant Analysis

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“…There are both direct and indirect evidences to suggest that As is held in soils by sediments by oxides (e.g. of Fe, Mn, Zn) through the formation of inner-sphere complexes via ligand exchange mechanism (Kumari et al, 2021;Raj et al, 2021). Iron appeared highly efficient to sequester As and to restrict As acquisition by rice (Chowdhury et al, 2018a).…”

Section: Tablementioning

confidence: 99%

Varietal Differences Influence Arsenic and Lead Contamination of Rice Grown in Mining Impacted Agricultural Fields of Zamfara State, Nigeria

Mandal¹,

Bakare²,

Rahman³

et al. 2022

SSRN Journal

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“…Arsenic in soil is present in both the solution and solid phases. The As may be in the form of organic and inorganic complexes (present in soil solution), adsorbed ions and compounds (clay and organic colloids), bound to secondary minerals and precipitated oxides of iron (Fe) and manganese (Mn), carbonates, and phosphates or complexed with organic matter and free ions (Raj et al., 2021). Total elemental concentrations within the soil offer little insight into the potential bioavailability of the elements (such as As), which may cause metal(loid) sequestration and recycling within the soil environment under the influence of various soil parameters (Kumari et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

Determination of bioavailable arsenic threshold and validation of modeled permissible total arsenic in paddy soil using machine learning

et al. 2023

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Minimizing arsenic intake from food consumption is a key aspect of the public health response in arsenic (As)-contaminated regions. In many of these regions, rice is the predominant staple food. Here, we present a validated maximum allowable concentration of total As in paddy soil and provide the first derivation of a maximum allowable soil concentration for bioavailable As. We have previously used metaanalysis to predict the maximum allowable total As in soil based on decision tree (DT) and logistic regression (LR) models. The models were defined using the maximum tolerable concentration (MTC) of As in rice grains as per the codex recommendation.

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Determination of Suitable Extractant for Estimating Plant Available Arsenic in Relation to Soil Properties and Predictability by Solubility-FIAM

Cited by 8 publications

References 30 publications

Evaluation of Different Extractants to Estimate Bioavailable Arsenic in Soil

Evaluation of Different Extractants to Estimate Bioavailable Arsenic in Soil

Varietal Differences Influence Arsenic and Lead Contamination of Rice Grown in Mining Impacted Agricultural Fields of Zamfara State, Nigeria

Determination of bioavailable arsenic threshold and validation of modeled permissible total arsenic in paddy soil using machine learning

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