Lead bioaccessibility in farming and mining soils: The influence of soil properties, types and human gut microbiota

Du, Hongwang; Yin, Naiyi; Cai, Xiaolin; Wang, Pengfei; Li, Yan; Fu, Yaqi; Sultana, Mst. Sharmin; Sun, Guoxin

doi:10.1016/j.scitotenv.2019.135227

Cited by 30 publications

(4 citation statements)

References 45 publications

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“…The ground dust can impact human health through ingestion, inhalation, and dermal contact [33,34]. Therefore, there are usually two methods to assess such health risks, with one of the bioaccessibility assessments simulating lung and gastric-intestinal fluids [35,36] and one with exposure assessment models developed by the U.S. Environmental Protection Agency [37]. The latter method was used in this study, with three main routes of human exposure, including direct ingestion of substrate particles (ADD ing ), inhalation of re-suspended particles through mouth and nose (ADD inh ), and dermal absorption of trace elements in particles adhered to the exposed skin (ADD dermal ), being calculated using Equations ( 2)-(4).…”

Section: Health Risk Assessmentmentioning

confidence: 99%

Heavy Metal(loid)s Contamination in Ground Dust and Associated Health Risks at a Former Indigenous Zinc Smelting Area

et al. 2021

IJERPH

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Indigenous zinc smelting (IZS) is a backward technique that releases a great deal of heavy metal(loid)s into the environment. However, the contamination of heavy metal(loid)s in ground dust and the associated health risks in such areas are poorly known. In this study, a former IZS area in Guizhou, China, was surveyed during 2008–2018 with 15 elements (Ag, As, Bi, Cd, Co, Cr, Cu, Hg, In, Ni, Pb, Sb, Sn, Tl, Zn) being analyzed. The results indicate that most elements (e.g., Ag, As, Cd, Cu, Pb, Sb, Sn, Zn) in ground dust decreased significantly after the cessation of the IZS in 2006; nevertheless, some elements still remained at relatively high levels in 2018, e.g., Pb (average: 762 ± 647 mg/kg), Zn (average: 1287 ± 753 mg/kg), Cd (average: 7.76 ± 5.06 mg/kg), and As (average: 41.9 ± 34.8 mg/kg), indicating they might come from the local contaminated soils, slag residues and smelting potteries. In terms of the impacts on human health, children have both higher non-carcinogenic and carcinogenic risks than that of adults, with the latter subpopulation having a lower risk than the threshold values. Pb and As were the two elements with the highest non-carcinogenic risk for children, the hazard index of local children was still higher than the threshold of 1 (e.g., 1.43 for As, 2.09 for Pb) in 2018. The carcinogenic risk of As exposure to children dropped more than two times to 6.42 × 10−7 in 2018, which falls below the tolerable range (10−6–10−4). This study revealed that although the concentration of heavy metal(loid)s in ground dust and linked health risk in the IZS area has reduced dramatically after the cessation of IZS, continued removal of slag residues and smelting potteries is necessary for further decreasing the human health risk.

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Section: Health Risk Assessmentmentioning

confidence: 99%

Heavy Metal(loid)s Contamination in Ground Dust and Associated Health Risks at a Former Indigenous Zinc Smelting Area

et al. 2021

IJERPH

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“…Traditionally, HHRA was evaluated based on total concentrations of potentially toxic elements. However, using the total concentrations of metal(loid)s has proved to be an overestimation of the bioavailable metal(loid)s and health risks (Boim et al, 2020;Du et al, 2020). Therefore, it is useful to pair HHRAs with IVBA tests to adjust for the bioaccessible fraction (Boim et al, 2020;Du et al, 2020;Mehta et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…However, using the total concentrations of metal(loid)s has proved to be an overestimation of the bioavailable metal(loid)s and health risks (Boim et al, 2020;Du et al, 2020). Therefore, it is useful to pair HHRAs with IVBA tests to adjust for the bioaccessible fraction (Boim et al, 2020;Du et al, 2020;Mehta et al, 2020). It is evident that the inclusion of metal(loid) bioaccessibility in HHRA is crucial to avoid overestimations in HHRA, however, it is still not a common practice (Kumpiene et al, 2017;Mehta et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Environmental and human health risk assessment of sulfidic mine waste: Bioaccessibility, leaching and mineralogy

Helser

Vassilieva

Cappuyns

2022

Journal of Hazardous Materials

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“…Compared with the traditional assessment methods, bioaccessibility can more accurately reflect the release of heavy metals in the human body, which is more scientific and reasonable. There have been a lot of researches on bioaccessibility at domestic and abroad, but the research objects mainly focus on soil heavy metals and metal mining areas, etc (Du et al 2020;Sultana et al 2020). Although the bioaccessibility of heavy metals in dust has been reported, the simulated digestion phase is only limited to the gastrointestinal phase, and the bioaccessibility of the simulated respiratory system in vitro is less reported.…”

Section: Introductionmentioning

confidence: 99%

Bioaccessibilities and health risk assessment of heavy metals in dust from the Guizhou-Guiyang urban zone, China

郁鑫杰¹,

王济²,

蔡雄飞³

et al. 2021

Preprint

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To investigate the health risks of heavy metals in dust entering the human body from different exposure pathways. In this study, the old urban area of Guiyang was used as the study area to understand the heavy metals concentrations in surface dust, including recreational plazas, main streets, hospitals, residential areas, and schools in this city, and the bioaccessibility in the simulated lung phase and simulated gastrointestinal phase. The results showed that the concentrations of Cu, Pb, Zn, Cd, Ni, and Cr in the dust were higher than the background values, especially the Zn content exceeded the background value by 9.71 times. The bioaccessibility results indicated that the most soluble heavy metals in the simulated lung phase, simulated gastric phase, and simulated intestinal phase were Zn, Ni, and Cu, respectively, and the bioaccessibility of most heavy metals was significantly higher in the gastric phase than in the intestinal phase, and only Cu was higher in the intestinal phase than in the gastric phase. The linear results fit suggested that the total amount of heavy metals alone could not predict the human intake of heavy metals in the dust. Human health risk assessment based on bioaccessibility showed that children had higher non-carcinogenic and carcinogenic risks than adults for both hand-to-mouth ingestion and respiratory inhalation exposure pathways, but none of them exceeded the limit values.

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Lead bioaccessibility in farming and mining soils: The influence of soil properties, types and human gut microbiota

Cited by 30 publications

References 45 publications

Heavy Metal(loid)s Contamination in Ground Dust and Associated Health Risks at a Former Indigenous Zinc Smelting Area

Heavy Metal(loid)s Contamination in Ground Dust and Associated Health Risks at a Former Indigenous Zinc Smelting Area

Environmental and human health risk assessment of sulfidic mine waste: Bioaccessibility, leaching and mineralogy

Bioaccessibilities and health risk assessment of heavy metals in dust from the Guizhou-Guiyang urban zone, China

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