Supplying amendments alleviates aluminum toxicity and regulates cadmium accumulation by spinach in strongly acidic soils

Fan, Beibei; Ding, Shuai; Peng, Yutao; Yin, Junhui; Li, Yanli; Cui, Shihao; Zhou, Xue; Mu, Kangguo; Ru, Shuhua; Chen, Qing

doi:10.1016/j.jenvman.2022.116340

Cited by 6 publications

(12 citation statements)

References 61 publications

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“…(2020) found applying 5% calcined oyster shell (800°C) decreased Cd concentration in the leaf of Bok Choy from 2.80 to 0.07 mg kg −1 . Meanwhile, the plant concentration in spinach was reduced from 52.9 to 20.2 mg kg −1 with the addition of 3% oyster shell (Fan et al., 2022). The COS in this study was a very efficient amendment for inhibiting the Cd uptake by plants.…”

Section: Discussionmentioning

confidence: 99%

“…Then the pretreated plant samples were digested with HNO 3 (8 mL) after overnight standing. The metal concentrations in the digested samples were analysed using inductively coupled plasma‐optical emission spectroscopy (ICP‐OES) (Fan et al., 2022).…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the elevation of soil pH also augments the presence of soluble organic matter, leading to the formation of organic complexes with Al (Kumar et al, 2023;Shi et al, 2020). When oyster shells and dolomite are applied, they can effectively increase soil pH and alter the composition of active Al in the soil, thereby promoting plant growth in acidic soils (Fan et al, 2022;Lee et al, 2008;Moon et al, 2013). However, in recent years, researchers have often focused solely on alleviating soil Al toxicity or immobilizing soil Cd.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous realization of cadmium bioavailability reduction and spinach growth promotion in acidic soils with calcined oyster shells and dolomite

Fan,

Li,

et al. 2023

Soil Use and Management

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Cheap and widely available calcium‐based materials have gained popularity for remediating cadmium‐contaminated soils, but their potential to address cadmium (Cd) toxicity in acidic soils remains deeply understudied. The current study investigated the effects of calcined oyster shells (COS) and dolomite (DM), applied at a rate of 30 g kg‐1, on Cd availability and its accumulation in spinach plants in acidic Cd‐contaminated soils (Cd concentration: 4.42 mg kg‐1). Additionally, the influence of active aluminum (Al) on Cd bioavailability and plant Cd accumulation was examined. The application of COS and DM led to a reduction in diethylenetriaminepentaacetic acid extracted Cd (DTPA‐Cd) of 42.1% and 28.6%, respectively. Furthermore, the COS and DM positively increased soil pH (2.48 and 1.81 units), electrical conductivity (89.4% and 28.1%), organic matter content (17.2% and 11.9%), and available phosphorus (37.7% and 6.39%), and decreased soil exchangeable Al3+ (100% and 83.9%). As a result of amending with COS and DM, the Cd concentration (81.0‐82.9%) and bioaccumulation factor (78.8‐80.2%) in spinach plants were significantly decreased (p < 0.05). The presence of exchangeable Al3+ in the soil showed only a weak influence on plant Cd accumulation. The COS and DM also induced 8.65 times and 5.42 times greater spinach fresh matter yield compared with the control. In conclusion, the application of COS and DM as amendments in Cd‐polluted acidic soils holds great promise. The COS has greater prospects for immobilizing Cd, promoting plant biomass, and producing plants with lesser Cd concentrations in acidic soils. This work offers a new strategy by adopting wide‐resource and cost‐effective mineral materials for sustainable environmental management.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simultaneous realization of cadmium bioavailability reduction and spinach growth promotion in acidic soils with calcined oyster shells and dolomite

Fan,

Li,

et al. 2023

Soil Use and Management

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“…As shown in Figure S2, soil exchangeable acid and exchangeable Al 3+ in amendment treatments were reduced by 42.8%-90.6% and 78.6%-100%, respectively. Fan et al (2022) found the application of amendments efficiently alleviated aluminium toxicity and reduced DPTA-Cd, eventually promoting the growth of spinach.…”

Section: Effect Of Amendments On Cadmium Accumulations In Spinach And...mentioning

confidence: 92%

“…Plant tissues (0.1000 g) were digested in a nitric acid solution (8 mL) to get ready for analysis. The metal concentrations in the digests were analysed as described by Fan et al (2022) via inductively coupled plasma-atomic emission spectroscopy (ICP-OES, Avio 200, PerkinElmer, USA).…”

Section: Concentration In Spinach and Soilsmentioning

confidence: 99%

Assessment of thin film gradient diffusion technique for precise analysis of soil cadmium passivation and uptake inhibition by different amendments

Fan,

Ding,

Wang

et al. 2023

Soil Use and Management

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The utilization of the thin film gradient diffusion technique has been on the rise for appraising the efficacy of soil cadmium (Cd). Nonetheless, in contrast to conventional methodologies employed to gauge the efficacy of soil Cd, there exists a dearth of adequate research concerning whether the technique of diffusive gradients in thin films (DGT) can furnish a more precise and all‐encompassing evaluation of soil Cd effectiveness in soil passivation and remediation procedures. Herein, this study selects four popular amendments (i.e., oyster shells, red mud, hydroxyapatite, and biochar) and analyzes the correlations among soil Cd availability, Cd uptake amount, and spinach biomass. Results showed that the following concentration ranges: DGT‐Cd (1.78 ‐ 21.1 μg L‐1), HAc‐Cd (1.84 ‐ 2.22 mg kg‐1), DTPA‐Cd (0.62 ‐ 1.22 mg kg‐1), and CaCl2‐Cd (0.0489 ‐ 0.103 mg kg‐1). Among the methods, CaCl2 extraction had a lower capacity to extract soil Cd compared to the other methods. These amendments improved soil environment, promoted spinach growth, and decreased plant Cd concentrations. Oyster shells and red mud treatments significantly reduced DGT‐Cd levels (by 90.4% and 82.2%, respectively), which led to a reduction in plant Cd concentrations (by 77.1% and 72.4%) and bioconcentration factor (by 75.8% and 68.8%). Furthermore, oyster shells were found to be most effective in reducing soil‐available Cd and inhibiting Cd uptake by spinach. Based on correlation analysis, the DGT method showed the largest measurement range and provided the best prediction of Cd accumulation in spinach compared to chemical extraction methods (R2=0.88, p<0.001). Overall, the use of DGT in combination with plant uptake and chemical extraction data can provide a comprehensive assessment of soil Cd bioavailability. These findings facilitate an accurate and comprehensive evaluation of the bioavailability of Cd after applying amendments. These results also showed that oyster shells can be regarded as a promising eco‐friendly and low‐cost amendment for large‐scale immobilizing Cd and producing plants with lesser Cd concentrations.

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Recent progresses, challenges, and opportunities of carbon-based materials applied in heavy metal polluted soil remediation

Zhang

Gao

et al. 2023

Science of The Total Environment

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Supplying amendments alleviates aluminum toxicity and regulates cadmium accumulation by spinach in strongly acidic soils

Cited by 6 publications

References 61 publications

Simultaneous realization of cadmium bioavailability reduction and spinach growth promotion in acidic soils with calcined oyster shells and dolomite

Simultaneous realization of cadmium bioavailability reduction and spinach growth promotion in acidic soils with calcined oyster shells and dolomite

Assessment of thin film gradient diffusion technique for precise analysis of soil cadmium passivation and uptake inhibition by different amendments

Recent progresses, challenges, and opportunities of carbon-based materials applied in heavy metal polluted soil remediation

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