Oxidative potential of size-segregated particulate matter in the dust-storm impacted Hotan, northwest China

An, Juqin; Liu, Huibin; Wang, Xinming; Talifu, Dilinuer; Abulizi, Abulikemu; Maihemuti, Mailikezhati; Li, Kejun; Bai, Haifeng; Luo, Ping; Xie, Xiaoxia

doi:10.1016/j.atmosenv.2022.119142

Cited by 7 publications

(2 citation statements)

References 56 publications

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“…The ratio of Mn is basically the same (44%, 48%). One reason for this may be the high level of dusty weather in summer [46]; the content of PM 10 in the air increases significantly with the sand and dust, causing a higher ratio of PM 2.5 to PM 10 concentrations in winter than in summer (winter: 0.84, summer: 0.57), resulting in most particles distributed in PM 2.5 in winter. On the other hand, PM 2.5 has smaller particle size and larger specific surface area; the wind speed in Hotan City is smaller and the humidity is higher in winter [47].…”

Section: Distribution Of Heavy Metals In Pm 25 and Pm 10 In Different...mentioning

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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Section: Distribution Of Heavy Metals In Pm 25 and Pm 10 In Different...mentioning

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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“…2024, 16, 465 2 of 19 survival and living conditions [1][2][3][4]. Oases are also crucial ecological barriers in drylands, defeating desertification, salinization [5], and sandy weather [6]. Since the 1950s, artificial oases have expanded due to land reclamation and agriculture in northwest China [7], which has contributed to sufficient and stable food production and economic growth [8] and has caused a series of environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Three Decades of Oasis Transition and Its Driving Factors in Turpan–Hami Basin in Xinjiang, China: A Complex Network Approach

Zhang,

Yan,

Zhang

et al. 2024

Remote Sensing

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As a predominant ecosystem-providing area and distinctive landscape in arid regions, an oasis plays an important role in maintaining land stability, human production, and daily activities. Studying the dynamics of oasis and its driving factors is vital to supporting arid regions’ sustainable development. As a typical mountain–desert–oasis landscape, the Turpan–Hami (Tuha) Basin, located in Xinjiang, China, includes complex interactions among different land types. For this study, we revealed the spatio-temporal patterns and transition processes of the oasis using a complex network method between 1990 and 2020 in the Tuha Basin. In the oasis transition network, the degree value, betweenness centrality, and average path length were calculated to express the transition relationship, key oasis type, and oasis structural stability, respectively. Six factors related to climate change and human actives were selected to investigate the driving forces behind oasis transitions, including the average temperature and precipitation in the growing season, the total power of agricultural machinery (TAMP), the production of raw coal (PRC), the total output value of the plantation industry (TPI), and the population (Pop). Our results show that the oasis area of the Tuha Basin, including the natural oasis and artificial oasis, all grew from 1990 to 2020, with the natural oasis expanding more than the artificial oasis. The transitions between oasis types became more frequent as the area of oasis land types increased throughout the study period. Grassland acted as the most important oasis type in the network, with the highest betweenness centrality, but its importance declined due to the increasing complexity of the oasis transition network from 1990 to 2020. The transitions between oasis types became simpler, and the oasis structural stability decreased. Through driving force analysis, the oasis changes showed a positive correlation with the temperature (p-value < 0.05, r = 0.88), and urbanization and industrialization factors prompted transitions to built-up areas and cropland from grassland and shrubland. In summary, our results suggest that to create a harmonious symbiotic relationship between the natural environment in dryland and human activities, preventing grassland degradation and excessive reclamation of land cover is an available way. Meanwhile, the protection of shrubland and water resources is also important. This study provided reference and theory support for promoting the sustainable development of oases.

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PM2.5/PM10-bound PAHs in Hotan city: Concentrations, sources, and contribution to ·OH

Zhang

Talifu

Ding

et al. 2023

Atmospheric Environment

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Oxidative potential of size-segregated particulate matter in the dust-storm impacted Hotan, northwest China

Cited by 7 publications

References 56 publications

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

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

Three Decades of Oasis Transition and Its Driving Factors in Turpan–Hami Basin in Xinjiang, China: A Complex Network Approach

PM2.5/PM10-bound PAHs in Hotan city: Concentrations, sources, and contribution to ·OH

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