干旱区生态环境知识资源中心(Arid): In vitro assessment oral and respiratory bioaccessibility of Mn in school dust: Insight of seasonality in a semiarid environment

Arid

DOI	10.1016/j.apgeochem.2021.105102
	In vitro assessment oral and respiratory bioaccessibility of Mn in school dust: Insight of seasonality in a semiarid environment
	Schiavo, Benedetto; Meza-Figueroa, Diana; Pedroza-Montero, Martin; Vidal-Solano, Jesus; Gonzalez-Grijalva, Belem; Navarro-Espinoza, Sofia; Romero, Francisco; Hernandez, Ernesto; Gutierrez-Ruiz, Margarita E.; Ceniceros-Gomez, Agueda E.
通讯作者	Schiavo, B (corresponding author), Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04150, DF, Mexico. ; Meza-Figueroa, D (corresponding author), Univ Sonora, Dept Geol, Hermosillo 83000, Sonora, Mexico.
来源期刊	APPLIED GEOCHEMISTRY
ISSN	0883-2927
EISSN	1872-9134
出版年	2021
卷号	134
英文摘要	In school environments in the Sonoran Desert, dust contains anomalously high manganese (Mn) of geogenic origin, similar to those reported at industrial sites. Non-carcinogenic risk assessment for children exposed to Mn was estimated for two sampling seasons (pre-monsoon, post-monsoon). We determined the total Mn content in school dust samples by portable X-ray fluorescence (PXRF), and we used geochemical indices for Mn-source apportionment. We identified dust mineralogy by X-ray diffraction (XRD). We obtained the oral and lung bioaccessibility by in vitro tests. The results showed a much higher total Mn content (1725.7 mg.kg(-1)) in the <20 mu m school dust size fraction in the pre-monsoon season compared to the average value post-monsoon (582.9 mg.kg(-1)). Moreover, in pre-monsoon season, the estimated hazard quotient (HQ) and hazard index (HI) for Mn were higher than 1, representing a potential health risk. Mn's oral and lung bioaccessibility also differed significantly between the sampling seasons, but the behavior was opposite to total Mn-content. The maximum gastric/intestinal bioaccessibility for Mn ranged from 10.6/1.7 pre-monsoon to 28.5/9.0% post-monsoon. In the simulated lung fluid, the maximum bioaccessibility of Mn ranged from 15.6% pre-monsoon to 64.1% postmonsoon. This variability was probably due to differences in Mn mineralogy (todorokite in pre-monsoon dust; an unknown phase in post-monsoon dust). Our results show that it is necessary to integrate seasonal sampling into risk assessment in arid zones worldwide, where dust resuspension processes commonly occur.
英文关键词	Manganese Arid environment School dust Health risk Bioaccessibility
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000708124000005
WOS关键词	HEALTH-RISK ASSESSMENT ; HEAVY-METALS ; STREET DUST ; ECOLOGICAL RISK ; ELEMENTARY-SCHOOLS ; MANGANESE LEVELS ; SOIL INGESTION ; URBAN SOILS ; ROAD DUST ; LAND-USE
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362481
作者单位	[Schiavo, Benedetto] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04150, DF, Mexico; [Meza-Figueroa, Diana; Vidal-Solano, Jesus; Gonzalez-Grijalva, Belem] Univ Sonora, Dept Geol, Hermosillo 83000, Sonora, Mexico; [Pedroza-Montero, Martin] Univ Sonora, Dept Invest Fis, Hermosillo 83000, Sonora, Mexico; [Navarro-Espinoza, Sofia] Univ Sonora, Dept Fis, Posgrad Nanotecnol, Hermosillo 83000, Sonora, Mexico; [Romero, Francisco; Hernandez, Ernesto] Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Mexico City, DF, Mexico; [Gutierrez-Ruiz, Margarita E.; Ceniceros-Gomez, Agueda E.] Univ Nacl Autonoma Mexico, Fac Quim, Lab Biogeoquim Ambiental, Mexico City, DF, Mexico
推荐引用方式 GB/T 7714	Schiavo, Benedetto,Meza-Figueroa, Diana,Pedroza-Montero, Martin,et al. In vitro assessment oral and respiratory bioaccessibility of Mn in school dust: Insight of seasonality in a semiarid environment[J]. Universidad Nacional Autónoma de México,2021,134.
APA	Schiavo, Benedetto.,Meza-Figueroa, Diana.,Pedroza-Montero, Martin.,Vidal-Solano, Jesus.,Gonzalez-Grijalva, Belem.,...&Ceniceros-Gomez, Agueda E..(2021).In vitro assessment oral and respiratory bioaccessibility of Mn in school dust: Insight of seasonality in a semiarid environment.APPLIED GEOCHEMISTRY,134.
MLA	Schiavo, Benedetto,et al."In vitro assessment oral and respiratory bioaccessibility of Mn in school dust: Insight of seasonality in a semiarid environment".APPLIED GEOCHEMISTRY 134(2021).