Plants influence on arsenic availability and speciation in the rhizosphere, roots and shoots of three different vegetables

Bergqvist, Claes; Herbert, Roger B.; Persson, Ingmar; Greger, Maria

doi:10.1016/j.envpol.2013.10.003

Cited by 54 publications

(33 citation statements)

References 27 publications

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“…Soil is a major sink of As, which can lead to contamination of vegetables because of its high mobility and uptake rate (Sridhar et al, 2011). The bioavailability of As and its subsequent bioaccumulation in vegetables (tomato, cucumber, cauliflower, pea, lettuce, spinach, cabbage, onion, radish, turnip, carrot, potato, etc) depend on soil texture, pH, organic matter content and composition, redox condition, water regime, mineral composition, and microbial activity (e.g., Bergqvist et al, 2014; Khan et al, 2015a; Smith et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Quantification of inorganic arsenic exposure and cancer risk via consumption of vegetables in southern selected districts of Pakistan

Rehman

Khan

Qin

et al. 2016

Science of The Total Environment

101

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Human exposures to arsenic (As) through different pathways (dietary and non-dietary) are considered to be one of the primary worldwide environmental health risks to humans. This study was conducted to investigate the presence of As in soil and vegetable samples collected from agricultural lands located in selected southern districts of Khyber Pakhtunkhwa (KPK) Province, Pakistan. We examined the concentrations of total arsenic (TAs), organic species of As such as monomethylarsonic acid (MMA) and dimethylarsonic acid (DMA), and inorganic species including arsenite (AsIII) and arsenate (AsV) in both soil and vegetable. The data were used to determine several parameters to evaluate human health risk, including bioconcentration factor (BCF) from soil to plant, average daily intake (ADI), health risk index (HRI), incremental lifetime cancer risk (ILTCR), and hazard quotient (HQ). The total As concentration in soil samples of the five districts ranged from 3.0-3.9 mg kg−1, exhibiting minimal variations from site to site. The mean As concentration in edible portions of vegetable samples ranged from 0.03-1.38 mg kg−1. It was observed that As concentrations in 75% of the vegetable samples exceeded the safe maximum allowable limit (0.1 mg kg−1) set by WHO/FAO. The highest value of ADI for As was measured for M. charantia, while the lowest was for A. chinense. The results of this study revealed minimal health risk (HI <1) associated with consumption of vegetables for the local inhabitants. The ILTCR values for inorganic As indicated a minimal potential cancer risk through ingestion of vegetables. In addition, the HQ values for total As were <1, indicating minimal non-cancer risk.

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Section: Introductionmentioning

confidence: 99%

“…The literature supports both the ability and inability of plants to methylate iAs inside the tissues (Lomax et al, 2012; Raab et al, 2007). However, As distribution and translocation (root to shoot) occur through both xylem and phloem depending on plant species (Bergqvist et al, 2014). …”

Section: Introductionmentioning

confidence: 99%

Quantification of inorganic arsenic exposure and cancer risk via consumption of vegetables in southern selected districts of Pakistan

Rehman

Khan

Qin

et al. 2016

Science of The Total Environment

101

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show abstract

“…Furthermore, this technique is not as widely available as ICP-MS and standards are difficult to come by. As shown in Table 1, Bergqvist et al [29] investigated the presence of As in carrots, lettuce and spinach using XANES and HPLC-AAS. Organic forms of As were not found in any of the plant species and only inorganic forms were present.…”

Section: Arsenicmentioning

confidence: 99%

“…By using plants as biomonitors, information on metabolic pathways, detoxification mechanisms and source apportionment can be obtained. A study by Bergqvist et al [29] showed that higher concentrations of inorganic As in edible crops correlated with the concentrations of As in the soils from an abandoned glassworks in which they were grown. Thus a clear link between cause and effect could be observed.…”

Section: Introductionmentioning

confidence: 99%

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Kroukamp

Wondimu

Forbes

2016

TrAC Trends in Analytical Chemistry

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The ability of plants to hyper-accumulate metals and metalloids from the surrounding environment may pose a significant health risk to both humans and animals since plants form a substantial component of diet. This attribute, however, has also been identified as a useful tool in bioremediation and biomonitoring studies; where assimilated metal(loid)s in plants often correlate to environmental exposure. Since the bioavailability and toxicity of these elements depends upon their chemical form, speciation studies are essential in determining mobility and metabolic pathways. This can be done in a number of ways where sampling, pre-treatment and storage are all important factors affecting speciation. Appropriate analytical techniques for speciation studies can either be direct methods such as XAS, or indirect methods which require species separation prior to analysis. Separation techniques can be in the form of sequential extractions or column separation and analyte detection often utilises instrumentation such as ESI-MS, ICP-MS and ICP-OES.

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“…Arsenic in soils can be accumulated in plants and animals at different degrees of concentrations and in various speciations (Ruiz-Chancho et al, 2008;Bergqvist et al, 2014). Among the food plants, rice is found much more efficient than other staple cereal crops at assimilating As into its grains, and the concentration of As in rice grains vary among countries and areas (Meharg et al, 2009).…”

Section: Derivation Based On As Accumulationmentioning

confidence: 99%

A study on soil-environmental quality criteria and standards of arsenic

Zhou

Teng

Liu

2017

Applied Geochemistry

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Plants influence on arsenic availability and speciation in the rhizosphere, roots and shoots of three different vegetables

Cited by 54 publications

References 27 publications

Quantification of inorganic arsenic exposure and cancer risk via consumption of vegetables in southern selected districts of Pakistan

Quantification of inorganic arsenic exposure and cancer risk via consumption of vegetables in southern selected districts of Pakistan

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

A study on soil-environmental quality criteria and standards of arsenic

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