TY - JOUR
T1 - Pollution characteristics, source apportionment and health risks assessment of fine particulate matter during a typical winter and summer time period in urban Taiyuan, China
AU - Zhang, Mei
AU - Li, Zhiping
AU - Xu, Min
AU - Yue, Jianwei
AU - CAI, Zongwei
AU - YUNG, Kin Lam
AU - Li, Ruijin
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China (Nos. 91843301 and 91543202), the Nature Science Foundation of Shanxi Province in China (201801D121260) and the Hundred Talents Program of Shanxi Province in China.
PY - 2020/11/25
Y1 - 2020/11/25
N2 - The concentrations of ambient fine particulate matter (PM2.5) and its compositions in urban Taiyuan, China during a typical winter and summer time period in 2017 were measured to investigate the pollution characteristics, source apportionment and health risks assessment of PM2.5 pollution. The results demonstrated that the mean daily mass concentration of PM2.5 in winter (102.6 ± 6.2 μg/m3) was higher than that in summer (65.0 ± 17.2 μg/m3) during sampling. The relatively high concentrations of heavy metals (Zn, Pb, Cu, As, Ni, Cr and Cd), anion (SO42−, NO3−, Cl− and F−) and high-molecular-weight PAHs in PM2.5 were observed. The enrichment factors (EFs) values, special diagnostic ratios like ratios of NO3−/SO42− and individual PAHs concentration ratio showed that coal combustion and vehicle emissions were the major sources of PM2.5 pollution. Health risk assessment illustrated that mean hazard indices for non-cancer and cancer risk of all analyzed metals were within the safe range. However, inhalation exposure to PM2.5-bound PAHs had carcinogenic risk, while not indicating non-carcinogenic risk. Taken together, although PM2.5 pollution was alleviated to some extent, PM2.5 pollution in 2017 was still serious and PM2.5 was mainly originated from coal burning, especially, in which PM2.5-bound PAHs in Taiyuan may pose a potential health risk.
AB - The concentrations of ambient fine particulate matter (PM2.5) and its compositions in urban Taiyuan, China during a typical winter and summer time period in 2017 were measured to investigate the pollution characteristics, source apportionment and health risks assessment of PM2.5 pollution. The results demonstrated that the mean daily mass concentration of PM2.5 in winter (102.6 ± 6.2 μg/m3) was higher than that in summer (65.0 ± 17.2 μg/m3) during sampling. The relatively high concentrations of heavy metals (Zn, Pb, Cu, As, Ni, Cr and Cd), anion (SO42−, NO3−, Cl− and F−) and high-molecular-weight PAHs in PM2.5 were observed. The enrichment factors (EFs) values, special diagnostic ratios like ratios of NO3−/SO42− and individual PAHs concentration ratio showed that coal combustion and vehicle emissions were the major sources of PM2.5 pollution. Health risk assessment illustrated that mean hazard indices for non-cancer and cancer risk of all analyzed metals were within the safe range. However, inhalation exposure to PM2.5-bound PAHs had carcinogenic risk, while not indicating non-carcinogenic risk. Taken together, although PM2.5 pollution was alleviated to some extent, PM2.5 pollution in 2017 was still serious and PM2.5 was mainly originated from coal burning, especially, in which PM2.5-bound PAHs in Taiyuan may pose a potential health risk.
KW - fine particulate matter
KW - health risks assessment
KW - pollution characteristics
KW - source apportionment
KW - Taiyuan
UR - https://www.ingentaconnect.com/content/tandf/bher/2020/00000026/00000010/art00010
UR - http://www.scopus.com/inward/record.url?scp=85074833637&partnerID=8YFLogxK
U2 - 10.1080/10807039.2019.1684184
DO - 10.1080/10807039.2019.1684184
M3 - Journal article
AN - SCOPUS:85074833637
SN - 1080-7039
VL - 26
SP - 2737
EP - 2750
JO - Human and Ecological Risk Assessment (HERA)
JF - Human and Ecological Risk Assessment (HERA)
IS - 10
ER -
