An integrated approach to safer plant production on metal contaminated soils using species selection and chemical immobilization

Kim, Hyuck Soo; Seo, Byoung-Hwan; Bae, Jun-Sik; Kim, Won-Il; Owens, Gary; Kim, Kwon-Rae

doi:10.1016/j.ecoenv.2016.05.008

Cited by 29 publications

(14 citation statements)

References 33 publications

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“…A similar result was also observed by Kim et al (2016), who observed a reduction in the accumulation of Cd due to the application of lime and peat, although in their experiment the soil had exceptionally higher Cd concentration than in our experiment (55 mg Cd kg ‐1 soil vs. 1.5 mg Cd kg ‐1 soil) where the Cd concentration was elevated due to the application of P fertilizers in New Zealand agricultural soils (Taylor, 1997). The reduction in Cd uptake may be partially explained by the reduction in bioavailable Cd [estimated in our experiments using a 0.05 M Ca(NO 3 ) 2 extraction], which occurred in all of the treatments and which has been reported by other authors with different plants (Pandit et al, 2012) and soils (Kim et al, 2016; Pandit et al, 2012). Black et al (2012) and Gray et al (1999a, 1992b) reported a strong positive correlation between plant Cd and Ca(NO 3 ) 2 –extractable Cd in a single soil type.…”

Section: Discussionsupporting

confidence: 91%

Effects of Lime and Organic Amendments Derived from Varied Source Materials on Cadmium Uptake by Potato

et al. 2017

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Repeated applications of Cd-rich phosphate fertilizers have resulted in elevated concentrations of this toxic element in some New Zealand soils. Exceedance of the food safety standard for Cd (0.1 mg kg -1 fresh weight) has been reported for potato (Solanum tuberosum L.). Composts may efficiently sorb Cd in soil and therefore reduce its phytoavailability, leading to reduced uptake by plants. We aimed to determine the potential of various composts, shredded corn stover, and lime at two different rates to reduce the transfer of Cd from a soil (containing 1.45 mg kg -1 Cd) to potato (var. 'Nadine'). In the control, the peeled tubers, skins, leaves, and stems had Cd concentrations of 0.04, 0.09, 0.26, and 0.53 mg kg -1 dry weight, respectively. There was a 71% reduction in tuber Cd concentrations in potatoes grown in soil amended with 5% (w/w) shredded corn stover, although it significantly decreased potato biomass. Potatoes grown in soil amended with pig manure compost, mushroom compost, sawdust-animal waste compost, and municipal compost at rates of either 2.5 or 5% (w/w) reduced tuber Cd concentrations by 58 to 66%, 46 to 63%, 52 to 53%, and 29 to 49%, respectively. Lime (1.3%) application in soil reduced tuber Cd concentrations by 50%. Composts significantly increased tuber biomass. Further work is warranted to identify the key components of composts that result in reduced Cd uptake by plants.

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Section: Discussionsupporting

confidence: 91%

Effects of Lime and Organic Amendments Derived from Varied Source Materials on Cadmium Uptake by Potato

et al. 2017

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“…[6]. Soil amendments, including mitigation and preservation management for the growth performance of biomass and metal accumulation in contaminated soils, is necessary [2]. Lastly, tolerant medicinal plants with high phytoremediation potential and capability for phytostabilization and phytoextraction [2] can be cultivated as an approach for the management and targeted bio-extraction of heavy metals from moderately polluted lands [28], together with a combination of different agents such as pH change-inducing chemical immobilization, alkaline materials including lime based materials, fly ash, and biochar, calcite, dolomite, oyster and egg shell [2].…”

Section: Discussionmentioning

confidence: 99%

“…Soil amendments, including mitigation and preservation management for the growth performance of biomass and metal accumulation in contaminated soils, is necessary [2]. Lastly, tolerant medicinal plants with high phytoremediation potential and capability for phytostabilization and phytoextraction [2] can be cultivated as an approach for the management and targeted bio-extraction of heavy metals from moderately polluted lands [28], together with a combination of different agents such as pH change-inducing chemical immobilization, alkaline materials including lime based materials, fly ash, and biochar, calcite, dolomite, oyster and egg shell [2]. Sorption agents such as phosphate materials, compost, zeolite and iron compounds, activated carbon, and bentonite, or materials that decrease dissolved organic carbon (DOC) such as gypsum treatment, Solanum nigrum, microbes, chelating agents, Extracellular polysaccharides or Exopolysaccharides (EPS) [42], and eco-friendly biocarbon technology [43].…”

Section: Discussionmentioning

confidence: 99%

“…To explore and guarantee the safety of herbal medicines, multiple studies regarding heavy metal contamination in herbal medicines have been carried out in China [9], India [10], Iran [11], Egypt [12], South Africa [13], United States [6], Brazil [14], and Australia [2], etc. Though a number of studies have been conducted regarding heavy metal contamination in herbal plants, most were with limited sample numbers and categories.…”

mentioning

confidence: 99%

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Heavy Metal Contaminations in Herbal Medicines: Determination, Comprehensive Risk Assessments, and Solutions

Luo

Wang²,

Jiang

et al. 2020

Preprint

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Background: Heavy metal contamination in herbal medicines is a global threat to human beings especially at levels above known threshold concentrations.Methods: The concentrations of five heavy metals cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg) and copper (Cu) were investigated using Inductively Coupled Plasma Optical Mass Spectrometry (ICP-MS) with 1773 samples. Exposure assessment, Non-carcinogenic risk assessment, and carcinogenic risk assessment were applied to measure their risks in human body.Results: According to Chinese Pharmacopoeia, 30.51% (541) samples were detected with at least one over-limit metal. The over-limit ratio for Pb was 5.75% (102), Cd at 4.96% (88), As at 4.17% (74), Hg at 3.78% (67), and of Cu, 1.75% (31). For exposure assessment, Pb, Cd, As, and Hg have resulted in higher than acceptable risks in 25 kinds of herbs. The maximal Estimated Daily Intake (EDI) of Pb in seven herbs, of Cd in five, of Hg in four, and As in three exceeded their corresponding Provisional Tolerable Daily Intakes (PTDI). In total 25 kinds of herbs present an unacceptable risk as assessed with the HQ (Hazard Quotient) or HI (Hazard Index). Particularly, Plantaginis herba (HI = 11.47) is more than 11 times over the limit.Conclusions: Heavy metal contamination in herbal medicines was borderline or higher than the safety level with the majority of the herbal plants were within acceptable risks. Notably, As posed the highest risk in all indicators including EDI, HI, and CR, inducing the most serious risks in all five metals. Herbal medicines Euodiae fructus, Plantaginis herba, and Desmodii styracifolii were considered the most risk-inducing herbal medicines. Therefore, it is of great advantage to establish universal standards and quality requirements for hazardous elements in herbal medicines so that this natural resource can continue and expand further, to benefit health globally.

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“…Pesticides are also potentially toxic compounds and when present in foods are referred to as pesticide residues. Contaminant levels in crops can be affected by many factors such as environmental conditions and growing practices, including soil type, weather conditions, crop variety and rotation, and harvest and storage practices and conditions [ 3 , 4 , 5 , 6 , 7 , 8 ]. Preparation, processing, and cooking of fruits and vegetables, whether done at home or commercially, may also result in formation or concentration of contaminants.…”

Section: Introductionmentioning

confidence: 99%

Challenges and Considerations When Balancing the Risks of Contaminants with the Benefits of Fruits and Vegetables for Infants and Toddlers

Callen¹,

Bhatia

Czerkies³

et al. 2018

Nutrients

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Background: Fruits and vegetables are key to a healthy diet, particularly in children; however, parents may be concerned about contaminants found in fruits and vegetables. Making informed food choices for children requires understanding and balancing the risks of contaminant exposure with the importance of providing a healthy diet. The objective of this work is to identify fruits and vegetables commonly consumed by infants and toddlers; identify potential contaminants in fruits and vegetables; and outline considerations in assessing contaminant risks in food categories with a critical role in a healthy diet. Method: Commonly consumed fruits and vegetables were obtained from the Feeding Infants & Toddlers Study (FITS 2016). The US Food and Drug Administration Total Diet Study was reviewed for contaminant occurrence, and multiple experts were consulted on considerations in assessing risk of certain contaminants. Results: FITS data show eight fruits and nine vegetables account for over 80% of consumption in infants and toddlers. Several contaminants have been detected in fruits and vegetables. Questions to be addressed prior to establishing contaminant guidance were identified. Conclusion: Contaminant guidance for fruits and vegetables consumed by infants and toddlers raises several challenges. Expertise from multiple disciplines is required to find an approach that maximizes public health benefit.

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An integrated approach to safer plant production on metal contaminated soils using species selection and chemical immobilization

Cited by 29 publications

References 33 publications

Effects of Lime and Organic Amendments Derived from Varied Source Materials on Cadmium Uptake by Potato

Effects of Lime and Organic Amendments Derived from Varied Source Materials on Cadmium Uptake by Potato

Heavy Metal Contaminations in Herbal Medicines: Determination, Comprehensive Risk Assessments, and Solutions

Challenges and Considerations When Balancing the Risks of Contaminants with the Benefits of Fruits and Vegetables for Infants and Toddlers

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