Thallium content in vegetables and derivation of threshold for safe food production in soil: A meta-analysis

Xiao, Xiyuan; Zhou, Wenqiang; Guo, Zhaohui; Peng, Chi; Xu, Rui; Zhang, Yunxia; Yang, Yunyun

doi:10.1016/j.scitotenv.2023.168845

Cited by 5 publications

(2 citation statements)

References 58 publications

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“…Tl is a recognized toxic heavy metal with good water solubility. It is mainly absorbed through the skin and mucous membranes, and vegetables are the main source of human Tl exposure ( 65 ). Thallium poisoning can affect various organs in the human body.…”

Section: Discussionmentioning

confidence: 99%

Association between machine learning-assisted heavy metal exposures and diabetic kidney disease: a cross-sectional survey and Mendelian randomization analysis

Zhao,

Lin,

Han

et al. 2024

Front. Public Health

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Background and objectiveHeavy metals, ubiquitous in the environment, pose a global public health concern. The correlation between these and diabetic kidney disease (DKD) remains unclear. Our objective was to explore the correlation between heavy metal exposures and the incidence of DKD.MethodsWe analyzed data from the NHANES (2005–2020), using machine learning, and cross-sectional survey. Our study also involved a bidirectional two-sample Mendelian randomization (MR) analysis.ResultsMachine learning reveals correlation coefficients of −0.5059 and − 0.6510 for urinary Ba and urinary Tl with DKD, respectively. Multifactorial logistic regression implicates urinary Ba, urinary Pb, blood Cd, and blood Pb as potential associates of DKD. When adjusted for all covariates, the odds ratios and 95% confidence intervals are 0.87 (0.78, 0.98) (p = 0.023), 0.70 (0.53, 0.92) (p = 0.012), 0.53 (0.34, 0.82) (p = 0.005), and 0.76 (0.64, 0.90) (p = 0.002) in order. Furthermore, multiplicative interactions between urinary Ba and urinary Sb, urinary Cd and urinary Co, urinary Cd and urinary Pb, and blood Cd and blood Hg might be present. Among the diabetic population, the OR of urinary Tl with DKD is a mere 0.10, with a 95%CI of (0.01, 0.74), urinary Co 0.73 (0.54, 0.98) in Model 3, and urinary Pb 0.72 (0.55, 0.95) in Model 2. Restricted Cubic Splines (RCS) indicate a linear linkage between blood Cd in the general population and urinary Co, urinary Pb, and urinary Tl with DKD among diabetics. An observable trend effect is present between urinary Pb and urinary Tl with DKD. MR analysis reveals odds ratios and 95% confidence intervals of 1.16 (1.03, 1.32) (p = 0.018) and 1.17 (1.00, 1.36) (p = 0.044) for blood Cd and blood Mn, respectively.ConclusionIn the general population, urinary Ba demonstrates a nonlinear inverse association with DKD, whereas in the diabetic population, urinary Tl displays a linear inverse relationship with DKD.

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Section: Discussionmentioning

confidence: 99%

Association between machine learning-assisted heavy metal exposures and diabetic kidney disease: a cross-sectional survey and Mendelian randomization analysis

Zhao,

Lin,

Han

et al. 2024

Front. Public Health

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“…The vegetable kale (Brassica oleracea var. capitata ) and green cabbage (Brassica oleracea) accumulated >300 μg Tl g –1 when growing in soils with <70 μg Tl g –1 . ,, The Brassicaceae contains species that have been reported to accumulate Tl in edible parts and are commonly used as food crops (e.g., mustard, broccoli, Brussel sprouts, cabbage, cauliflower, and kale). − This suggests that Tl toxicity from vegetable consumption can easily occur. The World Health Organization set a maximum value of Tl in diet at 0.18 μg/kg body weight per day .…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Uptake and Translocation of Thallium in Brassica Vegetables: An X-ray Fluorescence Microspectroscopic Investigation

Corzo-Remigio,

Harris,

Kidman

et al. 2024

Environ. Sci. Technol.

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Most nonoccupational human exposure to thallium (Tl) occurs via consumption of contaminated food crops. Brassica cultivars are common crops that can accumulate more than 500 μg Tl g −1 . Knowledge of Tl uptake and translocation mechanisms in Brassica cultivars is fundamental to developing methods to inhibit Tl uptake or conversely for potential use in phytoremediation of polluted soils. Brassica cultivars (25 in total) were subjected to Tl dosing to screen for Tl accumulation. Seven high Tl-accumulating varieties were selected for follow-up Tl dosing experiments. The highest Tl accumulating Brassica cultivars were analyzed by synchrotron-based micro-X-ray fluorescence to investigate the Tl distribution and synchrotron-based X-ray absorption near-edge structure spectroscopy (XANES) to unravel Tl chemical speciation. The cultivars exhibited different Tl tolerance and accumulation patterns with some reaching up to 8300 μg Tl g −1 . The translocation factors for all the cultivars were >1 with Brassica oleracea var. acephala (kale) having the highest translocation factor of 167. In this cultivar, Tl is preferentially localized in the venules toward the apex and along the foliar margins and in minute hot spots in the leaf blade. This study revealed through scanning electron microscopy and X-ray fluorescence analysis that highly Tlenriched crystals occur in the stoma openings of the leaves. The finding is further validated by XANES spectra that show that Tl(I) dominates in the aqueous as well as in the solid form. The high accumulation of Tl in these Brassica crops has important implications for food safety and results of this study help to understand the mechanisms of Tl uptake and translocation in these crops.

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A meta-analysis of influencing factors on soil pollution around copper smelting sites

Li,

Hartley

et al. 2024

Journal of Environmental Management

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Thallium content in vegetables and derivation of threshold for safe food production in soil: A meta-analysis

Cited by 5 publications

References 58 publications

Association between machine learning-assisted heavy metal exposures and diabetic kidney disease: a cross-sectional survey and Mendelian randomization analysis

Association between machine learning-assisted heavy metal exposures and diabetic kidney disease: a cross-sectional survey and Mendelian randomization analysis

Mechanisms of Uptake and Translocation of Thallium in Brassica Vegetables: An X-ray Fluorescence Microspectroscopic Investigation

A meta-analysis of influencing factors on soil pollution around copper smelting sites

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