C. Kuei Jyum Yeh

Bio: C. Kuei Jyum Yeh is an academic researcher from National Pingtung University of Science and Technology. The author has an hindex of 1, co-authored 1 publications receiving 11 citations.

Characteristics of Respirable Particulate Metals Emitted by a Beehive Firework Display in YanShuei Area of Southern Taiwan

Abstract: This study investigates metals in the PM_(1.0) and PM_(2.5) collected using a micro-orifice uniform deposition impactor (MOUDI) sampler in the YanShuei area of southern Taiwan during a beehive firework display. The results of sample analyses indicate that during the beehive firework display, the ratios of metal concentrations in PM_(2.5) (D) to the background level (B) at leeward sampling site were 1,828 for Ba, 702 for K, 534 for Sr, 473 for Cu, 104 for Mg, 121 for Al, and 98 for Pb. The corresponding data for PM_(1.0) were 3036, 838, 550, 676, 594, 190, and 126, respectively. According to the results of metal composition ratio, Principal Component Analysis (PCA), and upper continental crust (UCC) analyses, the concentrations of particle-bound Al, Ba, Cu, K, Mg, Pb, and Sr increased during the beehive firework displays, suggesting that firework-display aerosols contained abundant metal elements of Al, Ba, Cu, K, Mg, Pb, and Sr. Before (background), trial, during, and after the beehive firework display, the Ba, K, Cu, Mg, Pb, and Sr (commonly regarded as firework display indicator elements) accounted for 0.520, 2.45, 26.4 and 0.849% mass of PM1, respectively, while for PM_(2.5) the corresponding data were 0.777, 2.32, 23.8, and 0.776%, respectively.

Association of Particulate Matter Impact on Prevalence of Chronic Obstructive Pulmonary Disease in Ahvaz, Southwest Iran during 2009–2013

Abstract: Air pollutants produced in environments have many detrimental impacts on human health Chronic obstructive pulmonary disease (COPD) is a common worldwide respiratory disease The aim of this study was to estimate the association between the load of particulate matters and the prevalence of COPD in Ahvaz, southwest of Iran, during 2009–2013 This epidemiological and used-model study was performed in Ahvaz Particulate matter equal or less than 10 micro meters (PM10) was monitored by Ahvaz Environmental Protection Agency (AEPA) Sampling was performed hourly during the study period in 4 stations In this study, 175200 (4 × 24 × 365 × 5) samples of air were taken and collected Sampling and analysis were performed according to EPA guideline We utilized the relative risk values and baseline incidence measures by the WHO (Middle East) drawn from Health Effects Association of Particulate Matter Finally, prevalence of COPD attributed to particulate matter exposure was calculated by Air Q model According to our findings, the prevalence of COPD attributed to particulate matters decreased during 2009–2013 and followed a decreasing trend Accordingly, the yearly prevalence of COPD during the period 2009–2013 were 121, 111, 94, 102, and 98, and the yearly average PM10 concentrations during the same period were 31372, 28198, 28838, 27812, and 24229 µg m–3, respectively Although the average of 5-year study was higher than WHO and NAAQS values, a descending trend for COPD indicates that the level of PM10 was diminished from 2009 to 2013 Therefore mitigating air pollutant particularly PM10 as one of the main hazards could be possibly led to remarkable decrease in the rate of mortality and morbidity particularly COPD attributed to PM10

Chemical Characteristics of PM2.5 during 2015 Spring Festival in Beijing, China

Abstract: Air pollution especially of PM_(2.5) pollution is a serious problem in Beijing. In order to quantify the effect of a festival in which pollution was expected to be reduced, we collected and analyzed PM_(2.5) samples in urban Beijing during the 2015 Spring Festival (from February 9^(th) to March 6^(th) 2015). We divided the sampling period into three phases: non-haze, haze and firework days. The average concentration of PM_(2.5) was highest on firework days at 248.9 μg m^(-3), followed by haze days (199.9 μg m^(-3)) and non-haze days (90.8 μg m^(-3)). The air quality of non-haze days during the holiday was better than that during non-holiday periods. Secondary inorganic ions (SO_4^(2-), NO_3^- and NH_4^+) were enriched on the haze days, while those on firework days contained large amounts of Cl^- and K^+, but small amounts of NO_3^- and NH_4^+. Ratios of NO_3^-/SO_4^(2-), SO_4^(2-)/K^+ and Cl^-/K^+ effectively distinguished the characteristics of PM_(2.5) between firework events and haze days. Ion balance calculations indicated that the acidity of PM_(2.5) from firework days was higher than that from haze and non-haze days. A method using enrichment factors (EF) found that crustal elements (EF ＜ 10 on all three types of days) included Ca, Al, Fe, Na, Co, Ni, P, Ti, and V; firework elements (EF ＞ 10 on firework days, significantly higher than haze days) were made up of Ba, Cr, Cu, Mg, Pb, S, Si, and Zn; common anthropogenic pollution elements (EF ＞ 10 in all three types of days) were As, Cd, Cu, Pb, S, Sb, Zn. Differences in chemical characteristics indicated that holidays such as the Spring Festival can affect air pollution patterns in two ways: a decrease in the population and vehicles but an increase in activities such as firework displays.

Air pollution and human health risks: mechanisms and clinical manifestations of cardiovascular and respiratory diseases

Abstract: Nowadays one of the main agents morbidity and mortality, in worldwide, is exposure to air pollution. Based on reported health organization, air pollution is the second most important factor in nonc...