Heavy Metal Pollution and Risk Assessment of Surface Dust in the Arid NW China

Yang, Xiuyun; Eziz, Mamattursun; Hayrat, Adila; Ma, Xiaofei; Yan, Wei; Qian, Kaixuan; Li, Jiaxin; Liu, Yuan; Wang, Yifan

doi:10.3390/ijerph192013296

Cited by 7 publications

(2 citation statements)

References 118 publications

(128 reference statements)

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“…The population can be exposed to oodwater principally by dermal contact, thus the monitoring of chemical hazards as PTE is of great importance. Additionally, the PTE solubilized and suspended in oodwater during runoff, after the evaporation to further sediments (Varol et al, 2022) represent another possible exposure route (Yang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Risk assessment of potentially toxic elements in stagnant rainwater in Northwestern México

Archundia,

González-Méndez,

Loredo-Portales

2023

Preprint

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Failures of urban stormwater runoff management can lead to flooding. Potentially toxic elements (PTEs) are commonly found in water runoff and flood. Thus, the population and receiving ecosystems can be exposed to chemical hazards. However, floodwater quality is usually overlooked. In the rainy season, flooding is a persistent problem in the city of Hermosillo, Sonora, Mexico. Thus, the present research deals with the content of PTEs in floodwater, possible threats to receiving ecosystems and flood-affected population. Aluminum (Al), iron (Fe) and zinc (Zn) showed the highest maximum concentrations, which were higher than those observed in runoff in other cities. The PTEs concentrations exceeded Mexican, Australian and the United States guideline criteria. Groups of PTEs sharing similar concentrations were identified relating to their sources and origin: i) stannum (Sn), arsenic (As), chromium (Cr) and silver (Ag); ii) cadmium (Cd), cobalt (Co), antimony (Sb), selenium (Se), beryllium (Be), nickel (Ni), Zinc (Zn), lead (Pb), and thallium (Tl). Potential non-carcinogenic health effects and cancer risk were observed in the floodwater analyzed indicating that management measures should be taken to protect the flood-affected population. The results show that floodwater represents a source of chemical hazards, hence their quality must be monitored to reduce possible related risks.

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Section: Introductionmentioning

confidence: 99%

Risk assessment of potentially toxic elements in stagnant rainwater in Northwestern México

Archundia,

González-Méndez,

Loredo-Portales

2023

Preprint

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“…There are a certain number of vehicles and tire maintenance industries in the urban area of Hotan, as well as a large number of residential areas and schools, which may lead to the enrichment of these metals in particulate matter. Previous research on heavy metals in arid areas has spent more attention on concentration and source [38]. Bao et al analyzed the concentration and health risks of heavy metals in particulate matter in Hotan City in the summer of 2020 [39].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Bioaccessibility and Health Risk of Heavy Metals from PM2.5/PM10 in Arid Areas—Hotan City, China

et al. 2023

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The impact of heavy metals in particulates plays an assignable role in human health—especially in the northwest region of China, which is affected by severe dust storms—and the bioaccessibility and health risks of heavy metals in particulate matter have not yet been quantified and evaluated. This study used Gamble’s solution and PBET (physiologically based extraction test) experiments to simulate the human respiratory and digestive systems, and analyzed the concentrations and bioaccessibility of Pb, Mn, Ni, Cd and As in PM2.5 and PM10 samples in the urban area of Hotan City during summer (July) and winter (January). The result shows that Mn and Pb are the most abundant elements in five metals. The bioaccessibility of Mn in gastric fluid was the highest in both summer (PM2.5: 64.1%, PM10: 52.0%) and winter (PM2.5: 88.0%, PM10: 85.1%). Meanwhile, in the respiratory system, the highest bioaccessibility of PM2.5 and PM10 in summer was Ni (53.3%), and Pb (47.9%), respectively. Although the concentration of Cd is low in winter, its bioaccessibility in lung fluid was the highest (PM2.5: 74.7%, PM10: 62.3%). The USEPA standard model and Monte Carlo simulation results show that the heavy metals in PM2.5 and PM10 would give rise to non-carcinogenic risk for both adults and children through the respiratory system in summer but had little risk in winter. However, the metal may have non-carcinogenic risk to children through intake. In addition, there is a cancer risk to adults through the respiratory system in winter (PM2.5: CR = 1.80 × 10−6, PM10: CR = 2.82 × 10−6), while there is a carcinogenic risk through the digestive system regardless of season and age.

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