Cited by 131Heavy metals in environmentHeavy Metals in PlantsPlant Micronutrient Interactions and Effects

An invisible soil acidification: Critical role of soil carbonate and its impact on heavy metal bioavailability

Open access
Wang, Cheng, Li, Wei, Yang, Zhongfang, Chen, Yang, Shao, Wenjing, Ji, Junfeng·2015·Scientific Reports

Abstract

It is well known that carbonates inhibit heavy metals transferring from soil to plants, yet the mechanism is poorly understood. Based on the Yangtze River delta area, we investigated bioaccumulation of Ni and Cd in winter wheat as affected by the presence of carbonates in soil. This study aimed to determine the mechanism through which soil carbonates restrict transport and plant uptake of heavy metals in the wheat cropping system. The results indicate that soil carbonates critically influenced heavy metal transfer from soil to plants and presented a tipping point. Wheat grains harvested from carbonates-depleted (due to severe leaching) soils showed Ni and Cd concentrations 2-3 times higher than those of the wheat grains from carbonates-containing soils. Correspondingly, the incidence of Ni or Cd contamination in the wheat grain samples increased by about three times. With the carbonate concentration >1% in soil, uptake and bioaccumulation of Ni and Cd by winter wheat was independent with the soil pH and carbonate content. The findings suggest that soil carbonates play a critical role in heavy metal transfer from soil to plants, implying that monitoring soil carbonate may be necessary in addition to soil pH for the evaluating soil quality and food safety.

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Crossref · 10.1038/srep12735

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  • Water passage through carbonate rocks enhances dissolution of carbonates into water.

    “In addition, water passage through these rocks enhanced the dissolution of carbonates into the water [34,35].”

    From Advanced Oxidation Processes for Degradation of Water Pollutants—Ambivalent Impact of Carbonate Species: A Review (2023) · cites this paper as [35]

    The Discussion (page unavailable) proposes that acidification causes carbonates in topsoil to dissolve and be leached. That supports carbonate dissolution, but the paper does not establish that water passing through carbonate rocks enhances dissolution into the water; it addresses acidified soils rather than rock passage. (LLM, conf=0.82)

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Research works printed but not linked: 2

  1. Soil Survey Office of Jiangsu Province of China. Soil of Jiangsu (in Chinese). (Chinese Agriculture Press, Beijing, China, 1995).
  2. Xing G. et al. Soil Trace Elements and Lanthanon Chemistry (in Chinese). (Chinese Science Press, Beijing, China, 2002).

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Authors
Wang, C., Li, W., Yang, Z., Chen, Y., Shao, W., & Ji, J.
Affiliations
  • Nanjing University (CN)
  • University of Delaware (US)
  • China University of Geosciences (Beijing) (CN)
Corresponding author
Ji, Junfeng
Venue
Scientific Reports
Published
2015-07-31
Volume
5
Issue
1
Pages
12735-12735
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2419111553
Cited by
131
References
25
Citations by year
2026: 8 · 2025: 19 · 2024: 16 · 2023: 22 · 2022: 22 · 2021: 13 · 2020: 12 · 2019: 5 · 2018: 5 · 2017: 5 · 2016: 3 · 2015: 1
FWCI
2.90
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Library, Museums and Press - UDSpace (University of Delaware) (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (41273111, 490973062)
  • China Geological Survey (12120115048301)
Topics
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
Keywords
soil carbonates, heavy metal bioavailability, nickel, cadmium, winter wheat, heavy metal bioaccumulation, soil-to-plant transfer, soil acidification, leaching, food safety, soil quality, Yangtze River Delta
MeSH terms
Biological Availability, Cadmium, Carbonates, China, Hydrogen-Ion Concentration, Nickel, Soil, Soil Pollutants, Triticum, Metals, Heavy

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