Regional accumulation characteristics of cadmium in vegetables: Influencing factors, transfer model and indication of soil threshold content

Yang, Yang; Chen, Weiping; Wang, Meie; Peng, Chi

doi:10.1016/j.envpol.2016.09.003

Cited by 80 publications

(39 citation statements)

References 30 publications

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“…In addition to toxic effects of metals in plants, food safety has gained considerable attention worldwide [283,284]. During last 2-3 decades, numerous studies focused on the health risks associated with the ingestion of contaminated vegetables [284][285][286]. It is reported that the metal contents in edible parts of vegetables may exceed the maximum permissible limits (MPLs) with serious public health implications [287].…”

Section: Health Risk Assessment Of Heavy Metal After Foliar Uptakementioning

confidence: 99%

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Shahid

Dumat

Khalid

et al. 2017

Journal of Hazardous Materials

902

297

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Anthropologic activities have transformed global biogeochemical cycling of heavy metals by emitting considerable quantities of these metals into the atmosphere from diverse sources. In spite of substantial and progressive developments in industrial processes and techniques to reduce environmental emissions, atmospheric contamination by toxic heavy metals and associated ecological and health risks are still newsworthy. Atmospheric heavy metals may be absorbed via foliar organs of plants after wet or dry deposition of atmospheric fallouts on plant canopy. Unlike root metal transfer, which has been largely studied, little is known about heavy metal uptake by plant leaves from the atmosphere. To the best of our understanding, significant research gaps exist regarding foliar heavy metal uptake. This is the first review regarding biogeochemical behaviour of heavy metals in atmosphere-plant system. The review summarizes the mechanisms involved in foliar heavy metal uptake, transfer, compartmentation, toxicity and in plant detoxification. We have described the biological and environmental factors that affect foliar uptake of heavy metals and compared the biogeochemical behaviour (uptake, translocation, compartmentation, toxicity and detoxification) of heavy metals for root and foliar uptake. The possible health risks associated with the consumption of heavy metal-laced food are also discussed.

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Section: Health Risk Assessment Of Heavy Metal After Foliar Uptakementioning

confidence: 99%

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Shahid

Dumat

Khalid

et al. 2017

Journal of Hazardous Materials

902

297

View full text Add to dashboard Cite

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“…1). A detailed description of the sampling strategy was given by Yang et al (2016). Eight major consumed vegetables including bok choy (Brassica rape var.…”

Section: Study Area and Samplingmentioning

confidence: 99%

“…Soil and vegetable samples were prepared according to the procedure described in Yang et al (2016). Soil organic matter content, clay content, and cation-exchange capacity are listed in Table SI2.…”

Section: Chemical Analysismentioning

confidence: 99%

“…In this study, Cd PUF value of rape ranged from 0.007 to 0.3, and averaged 0.11 (geometric mean). Based on a field survey (Yang et al, 2016), we found that phosphorus fertilizer applied in the study area was generally low in Cd (0.33 mg kg −1 , Table SI4). These results indicate that rape may be a good candidate for phytoremediation (Chaney et al, 2004) in heavily Cd-contaminated area.…”

Section: Tes In Soil and Vegetablesmentioning

confidence: 99%

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Evaluating the potential health risk of toxic trace elements in vegetables: Accounting for variations in soil factors

Yang

Chen

Wang

et al. 2017

Science of The Total Environment

Self Cite

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Vegetable crop consumption is one of the main sources of dietary exposure to toxic trace elements (TEs). A paired survey of soil and vegetable samples was conducted in 589 agricultural sites in the Youxian prefecture, southern China, to investigate the effect of soil factors on the accumulation of arsenic, cadmium, mercury, and lead in different vegetables. A site-specific model was developed to estimate the health risk from vegetable consumption. The TE concentration varied in different plant species, and rape can be cultivated in contaminated areas for its potential use in restricting the transfer of TE from soil to edible plant parts. The accumulation of TEs in vegetables was governed by multiple factors, mainly element interaction, metal availability (extractable CaCl fraction), and soil pH. Soil Zn may promote Cd accumulation in vegetables when soil Cd/Zn ratio>0.02. Cadmium is a major hazardous component. About 80.8% of the adult populations consuming locally produced vegetables had a daily Cd intake risk above the safe standard. Among investigated vegetables, radish is potentially hazardous for populations because of its high consumption rate and high Cd content but low Zn accumulation. The consumption of radish cultivated in highly acidic soil (4

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“…Regional surveys showed that PTMs in plant tissues increased with soil pH decrease [29][30][31]. Furthermore, the enrichment factors of PTMs, relative to their total concentrations in soil, were negatively correlated with soil pH [32][33][34]. Experiments indicated that temporary soil acidification accelerated the release of soil PTMs [23,35], while increasing soil pH reduced their leaching and plant uptake [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Cd and Cu Fractions in Chinese Soils and Their Relationships with Soil pH: A Meta-Analysis

Ning

Zhang

et al. 2019

Sustainability

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Soil contamination by potentially toxic metals (PTMs) has become a public concern in China. However, the distribution and controlling factors of soil PTM fractions remain largely unknown, limiting our ability to assess their health risks and thus to make sound controlling polices. Here, we investigate the fraction distribution of cadmium (Cd) and copper (Cu) in Chinese soils and their relationships with soil pH, based on a national meta-analysis of 163 published literatures. Exchangeable Cd in southern China accounted for 19.50 ± 14.97% of total Cd, significantly (p < 0.01) higher than the corresponding 13.42 ± 6.95% in northern China. Potentially available fractions constituted about 60% of total Cd at the national scale. By contrast, about half of soil Cu existed in unavailable residual fraction. Phytoavailable (i.e., exchangeable) fraction accounted for only 2.71 ± 1.65% and 2.54 ± 1.58% of total Cu in northern and southern China, respectively. Percentages of exchangeable Cd and Cu were negatively correlated (p < 0.01) with soil pH, while potentially available fractions increased significantly (p < 0.05) with soil pH. Our results provide the first national assessment of Cd and Cu fraction distribution and their responses to soil pH variations, highlighting the necessity to consider their fraction distribution and soil properties when assessing the health risks of soil PTM contamination in China.

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Regional accumulation characteristics of cadmium in vegetables: Influencing factors, transfer model and indication of soil threshold content

Cited by 80 publications

References 30 publications

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Evaluating the potential health risk of toxic trace elements in vegetables: Accounting for variations in soil factors

Distribution of Cd and Cu Fractions in Chinese Soils and Their Relationships with Soil pH: A Meta-Analysis

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