Water solubility of metals in coarse PM and PM2.5 in typical urban environment in Hong Kong

Sabrina Y. N. Jiang; Fenhuan Yang; Ka Lok Chan; Zhi Ning

doi:10.5094/APR.2014.029

Water solubility of metals in coarse PM and PM_2.5 in typical urban environment in Hong Kong

Sabrina Y. N. Jiang, Fenhuan Yang, Ka Lok Chan, Zhi Ning

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

68 Citations (Scopus)

133 Downloads (CityUHK Scholars)

Abstract

An investigation of abundance and solubility of metals in size-segregated particulate matter (PM) was conducted at a typical urban site during the winter between late 2011 and early 2012 in Kowloon Tong, Hong Kong. The samples were extracted by both strong acid and water, and fourteen elements including Al, Ca, Cd, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, V, and Zn were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The metals in PM showed distinctly different profiles of their distribution between coarse particles (2.5 μm2.5 (dp2.5 were analyzed and compared to investigate the transition metals solubility. The water extractable fraction was found to be present mainly in the fine particles, whereas more of the coarse fraction mass remained as insoluble fraction. The results from this study demonstrated large variation of water solubility of metals in urban aerosols in different size fractions and highlighted solubility as an important metric for considering the relation between metals and adverse health effects in epidemiological and toxicological studies. © Author(s) 2014.

Original language	English
Pages (from-to)	236-244
Journal	Atmospheric Pollution Research
Volume	5
Issue number	2
DOIs	https://doi.org/10.5094/APR.2014.029
Publication status	Published - Apr 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being
SDG 11 Sustainable Cities and Communities

Research Keywords

Acid digestion
Crustal enrichment factor
Metals
Size fractionated PM
Water solubility

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abstract = "An investigation of abundance and solubility of metals in size-segregated particulate matter (PM) was conducted at a typical urban site during the winter between late 2011 and early 2012 in Kowloon Tong, Hong Kong. The samples were extracted by both strong acid and water, and fourteen elements including Al, Ca, Cd, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, V, and Zn were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The metals in PM showed distinctly different profiles of their distribution between coarse particles (2.5 μm2.5 (dp2.5 were analyzed and compared to investigate the transition metals solubility. The water extractable fraction was found to be present mainly in the fine particles, whereas more of the coarse fraction mass remained as insoluble fraction. The results from this study demonstrated large variation of water solubility of metals in urban aerosols in different size fractions and highlighted solubility as an important metric for considering the relation between metals and adverse health effects in epidemiological and toxicological studies. {\textcopyright} Author(s) 2014.",

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author = "Jiang, {Sabrina Y. N.} and Fenhuan Yang and Chan, {Ka Lok} and Zhi Ning",

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AU - Jiang, Sabrina Y. N.

AU - Yang, Fenhuan

AU - Chan, Ka Lok

AU - Ning, Zhi

PY - 2014/4

Y1 - 2014/4

N2 - An investigation of abundance and solubility of metals in size-segregated particulate matter (PM) was conducted at a typical urban site during the winter between late 2011 and early 2012 in Kowloon Tong, Hong Kong. The samples were extracted by both strong acid and water, and fourteen elements including Al, Ca, Cd, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, V, and Zn were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The metals in PM showed distinctly different profiles of their distribution between coarse particles (2.5 μm2.5 (dp2.5 were analyzed and compared to investigate the transition metals solubility. The water extractable fraction was found to be present mainly in the fine particles, whereas more of the coarse fraction mass remained as insoluble fraction. The results from this study demonstrated large variation of water solubility of metals in urban aerosols in different size fractions and highlighted solubility as an important metric for considering the relation between metals and adverse health effects in epidemiological and toxicological studies. © Author(s) 2014.

AB - An investigation of abundance and solubility of metals in size-segregated particulate matter (PM) was conducted at a typical urban site during the winter between late 2011 and early 2012 in Kowloon Tong, Hong Kong. The samples were extracted by both strong acid and water, and fourteen elements including Al, Ca, Cd, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, V, and Zn were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The metals in PM showed distinctly different profiles of their distribution between coarse particles (2.5 μm2.5 (dp2.5 were analyzed and compared to investigate the transition metals solubility. The water extractable fraction was found to be present mainly in the fine particles, whereas more of the coarse fraction mass remained as insoluble fraction. The results from this study demonstrated large variation of water solubility of metals in urban aerosols in different size fractions and highlighted solubility as an important metric for considering the relation between metals and adverse health effects in epidemiological and toxicological studies. © Author(s) 2014.

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KW - Crustal enrichment factor

KW - Metals

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KW - Water solubility

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