Organic Matter—Solid Phase Interactions Are Critical for Predicting Arsenic Release and Plant Uptake in Bangladesh Paddy Soils

Williams, Paul N.; Zhang, Hao; Davison, William; Meharg, Andrew A.; Hossain, Mahmud; Norton, Gareth J.; Brammer, Hugh; Islam, Md. Rafiqul

doi:10.1021/es2003765

Cited by 187 publications

(97 citation statements)

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“…Both As(V) and As(III) are mainly sequestered by iron minerals (Macur et al 2004;Islam et al 2005), and the adsorption and desorption of As from the minerals determines the mobility of As in the soil (Smedley and Kinniburgh 2002). Dissolved organic matter could compete with As for adsorption sites at mineral surface, decrease As(V) and As(III) adsorption and enhanced As release to the soil solution in the paddy soil Williams et al 2011). Organic matters (OM) and OM-Fe complexes bind As on the minerals, which also promote desorption of arsenic from solid phases by altering soil/solution equilibrium, while simultaneously impacting on the bioavailability Sharma et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Biogas slurry application elevated arsenic accumulation in rice plant through increased arsenic release and methylation in paddy soil

et al. 2012

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Background Rice can accumulate arsenic (As) to relatively high concentrations due to the general flooding practices in rice cultivation, and organic matter in the soil strongly affected As bioavailability to rice plants. The influence of organic matter input on the As transformation in paddy soil and As uptake into rice plants is an area that is rarely investigated. Methods Biogas slurry (BGS), a commonly used organic fertilizer, was applied to an As contaminated paddy soil, in order to investigate the influence of organic matter on As transformation in the paddy soil and As accumulation in rice plants.Results Application of BGS significantly increased the As accumulation in rice plants, especially for methylated As species. Results showed that the concentrations of dissolved organic carbon (DOC) and dissolved Fe(II) in the soil solution were significantly increased by the BGS addition into the paddy soil, and were significantly correlated to the As concentration in the soil solution (P<0.01). The increase of soil pH and the decrease of the soil redox potential (Eh) were observed as well. These alteration of soil characteristics elevated the As release from soil particles to the soil solution under the addition of BGS. The increased concentrations of dimethylarsinic acid (DMAs(V)) and monomethylarsonic acid (MMAs(V)) in the soil solution, and the volatilized As of trimethylarsine (TMAs) from the paddy soil, suggested that As methylation and volatilization in the soil were also enhanced by BGS addition. The concentrations of methylated As species in rice husks and grains were increased by 105.8-105.9 % and 99.7-112.2 %, respectively. Conclusion These results suggested that the use of organic fertilizer, such as BGS in As-contaminated paddy soil, can significantly alter the behavior of As in soil-rice system and enhance As accumulation in rice plants and should therefore be avoided.

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Section: Discussionmentioning

confidence: 99%

Biogas slurry application elevated arsenic accumulation in rice plant through increased arsenic release and methylation in paddy soil

et al. 2012

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“…R value (ratio of CDGT to Csol) reflects the resupply potential of an element to the soil solution, providing an additional measure of the ability of a soil to maintain the CDGT flux [43]. Comparison of the soil R values (0.06-0.09) from this study with those for other metals (Cd, Zn, Ni and As), encompassing a wide range of soil types [54][55][56][57], shows that typically W resupply is relatively poorly sustained. This is further supported by the high (>90%) non-available residual fraction of W observed in acidic and neutral soils [10,18,58].…”

Section: Measurement Of W In Soils Using Pz Pf and Sf Dgt'smentioning

confidence: 98%

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Guan

et al. 2016

Journal of Hazardous Materials

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This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited. General rightsCopyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. high-resolution W profiling across sedimentwater and hotspotbulk media interfaces from Lake Taihu was obtained using PZ DGT coupled with laser ablation ICPMS measurement, and the apparent diffusion fluxes across the interfaces were calculated using a numerical model. KEY WORDS: diffusive gradients in thin-films (DGT); tungsten; precipitated zirconia (PZ) gel; sub-mm high resolution; hotspotbulk media interface.

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“…Dissolved As generally has been considered an indicator for As availability, although some researchers pointed out that it is not a good predictor for As uptake by rice (Williams et al 2011;Norton et al 2013). The addition of OAs potentially increases (Xie and Huang 1998;Suda et al 2015) and decreases (Das et al 2005) dissolved As through a variety of mechanisms (see ''Introduction'' section).…”

Section: Implication and Further Studiesmentioning

confidence: 99%

Effect of organic amendments on arsenic solubilization in soils during long-term flooded incubation

Suda

Makino

2016

Int. J. Environ. Sci. Technol.

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Rice consumption is considered an important arsenic source for the population in Asian countries. Previous studies showed increase in arsenic solubility in flooded soils and arsenic uptake by rice plants with the application of organic amendments, while contrasting results were also reported. Here, we comprehensively examined the effect of three types of organic amendments on arsenic solubility during long-term flooded soil incubation. The amendments examined were categorized as (1) plant-based composts, (2) cattle manures, and (3) fermented livestock (swine and poultry) droppings. The dissolved arsenic in all soils with fermented livestock dropping was significantly greater than that in control soils at 10 and 39 days after incubation. The soils with two cattle manures also contained significantly greater amounts of dissolved arsenic than control soils at day 39, while the rest of the amendments did not increase arsenic solubility. At day 80, the amount of dissolved arsenic in all soils became comparable. Tukey's test demonstrated that the relative ratio of dissolved arsenic in soils with fermented livestock droppings to control soils was significantly greater than those with the plant-based composts and cattle manures at days 10 and 39. Furthermore, the solubilizing effect of some organic amendments was mostly explained by promotion of decrease in soil Eh, rather than increase in dissolved organic carbon. Thus, it could be concluded that fermented livestock droppings potentially have a greater risk of solubilizing As than plant-based composts and cattle manures, because of their greater ability for accelerating soil reduction, associated with their higher bio-decomposability.

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Organic Matter—Solid Phase Interactions Are Critical for Predicting Arsenic Release and Plant Uptake in Bangladesh Paddy Soils

Cited by 187 publications

References 35 publications

Biogas slurry application elevated arsenic accumulation in rice plant through increased arsenic release and methylation in paddy soil

Biogas slurry application elevated arsenic accumulation in rice plant through increased arsenic release and methylation in paddy soil

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Effect of organic amendments on arsenic solubilization in soils during long-term flooded incubation

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