Journal
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
Volume 98, Issue 11, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jics.2021.100212
Keywords
Metal toxicity; Bioaccessible fraction; Risk assessment; Human health; Biologically relevant elements; Leaching agents
Categories
Funding
- SERB, India [EMR/2015/000928]
- DST FIST, India [SR/FST/CSI-259/2014 (c)]
- UGC-SAP-DRS-II, India program [F-540/7/DRS-II/2016 (SAP-I)]
- FCT [UID/GEO/04035/2019 + UIDB/04035/2020]
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This study discussed the impact of different extraction methods and leaching agents on the bioaccessible fraction of metal elements in ambient particulate matter, as well as their effects on human health. It was found that human body simulated fluids provide more accurate values for assessing the bioaccessible fractions of potentially toxic elements.
For a better and accurate risk assessment of metal toxicity, the concentration of the bioaccessible fraction (BAF) is more relevant than the total metal concentration. This review describes different extraction methods with different leaching agents for various chemical forms of elements such as As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn in ambient particulate matter (APM). Several leaching agents simulating the human body fluids have been developed to determine the bioaccessible metal fractions in APM. This study aims to enhance the knowledge of the bioaccessible concentrations and its impact on human health, documented for different locations worldwide. Furthermore, this study disclosed that confined observations have been found concerning the application and evolution of standard methods for the estimation of biologically relevant elements in ambient particulate matter. This review also revealed that human body simulated fluids like lung and gastric fluids, on comparing to water, provide more realistic values of bioaccessible fractions of potentially toxic elements (PTEs) in assessing human health risks.
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