Variation and source apportionment of health risks from toxic air pollutants in Hong Kong between 2000 and 2011

2014 ◽  
Author(s):  
Zhiyuan Li
Keyword(s):  
Hong Kong ◽  
Source Apportionment ◽  
Health Risks ◽  
Air Pollutants

Characterization and source apportionment of health risks from ambient PM 10 in Hong Kong over 2000–2011

2015 ◽  
Vol 122 ◽  
pp. 892-899 ◽  
Author(s):  
Zhiyuan Li ◽  
Zibing Yuan ◽  
Ying Li ◽  
Alexis K.H. Lau ◽  
Peter K.K. Louie
Keyword(s):  
Hong Kong ◽  
Source Apportionment ◽  
Health Risks ◽  
Pm 10

scholarly journals Spatial Distribution, Source Apportionment, Ozone Formation Potential, and Health Risks of Volatile Organic Compounds over a Typical Central Plain City in China

Atmosphere ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1365
Author(s):  
Kun He ◽  
Zhenxing Shen ◽  
Jian Sun ◽  
Yali Lei ◽  
Yue Zhang ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Source Apportionment ◽  
Organic Compounds ◽  
Health Risks ◽  
Urban Areas ◽  
High Time Resolution ◽  
Ozone Formation ◽  
Industrial Site ◽  
Industrial Emissions ◽  
Volatile Organic

The profiles, contributions to ozone formation, and associated health risks of 56 volatile organic compounds (VOCs) species were investigated using high time resolution observations from photochemical assessment monitoring stations (PAMs) in Luoyang, China. The daily averaged concentration of total VOCs (TVOCs) was 21.66 ± 10.34 ppbv in urban areas, 14.45 ± 7.40 ppbv in suburbs, and 37.58 ± 13.99 ppbv in an industrial zone. Overall, the VOCs levels in these nine sites followed a decreasing sequence of alkanes > aromatics > alkenes > alkyne. Diurnal variations in VOCs exhibited two peaks at 8:00–9:00 and 19:00–20:00, with one valley at 23:00–24:00. Source apportionment indicated that vehicle and industrial emissions were the dominant sources of VOCs in urban and suburban sites. The industrial site displayed extreme levels, with contributions from petrochemical-related sources of up to 38.3%. Alkenes and aromatics displayed the highest ozone formation potentials because of their high photochemical reactivity. Cancer and noncancer risks in the industrial site were higher than those in the urban and suburban areas, and USEPA possible risk thresholds were reached in the industrial site, indicating PAMs VOC–related health problems cannot be ignored. Therefore, vehicle and industrial emissions should be prioritized when considering VOCs and O3 control strategies in Luoyang.

scholarly journals Health risks of exposure to air pollutants among students in schools in the vicinities of coal mines

2018 ◽  
Vol 37 (6) ◽  
pp. 1638-1656 ◽  
Author(s):  
Adejoke C Olufemi ◽  
Andile Mji ◽  
Murembiwa S Mukhola
Keyword(s):  
Health Risks ◽  
Air Pollutants ◽  
Coal Mines

Analysis of Noncancer Health Risks Associated with Hazardous Air Pollutants

Risk Analysis ◽  
1991 ◽  
pp. 239-247
Author(s):  
Timothy J. Mohin ◽  
David E. Guinnup
Keyword(s):  
Health Risks ◽  
Air Pollutants ◽  
Hazardous Air Pollutants

scholarly journals Interrelationship of Indoor particulate matter and Respiratory dust deposition of women in the residence of Dhanbad City, India

2021 ◽  
Author(s):  
SHRAVAN KUMAR ◽  
Manish Kumar Jain
Keyword(s):  
Particulate Matter ◽  
Health Risks ◽  
Indoor Air ◽  
Air Pollutants ◽  
Fine Particles ◽  
Dust Deposition ◽  
Respiratory Problems ◽  
Indoor Particulate Matter ◽  
Indoor Air Pollutants ◽  
Indoor Conditions

Abstract Women spend relatively more time in indoor conditions in developing countries. Exposure to various indoor air pollutants leads them to higher health risks according to Household air quality in which they reside. Particulate matter (PM) exposure with their exposure duration inside the household plays a significant role in women's Respiratory problems. We measured size segregated particulate matter concentrations in 63 residences at different locations. Respiratory dust depositions (RDDs) for 118 women in their different respiratory regions like head-airway (HD), tracheobronchial (TB), and alveolar (AL) region for the three PM size fractions (PM10, PM2.5 & PM1) were investigated. For different positions like Light exercise and the Sitting condition, RDD values found for AL region was 0.091 µgmin− 1 (SD: 0.067, 0.012–0.408) and 0.028 µgmin− 1 (SD: 0.021, 0.003–0.126) for PM10, 0.325 µgmin− 1 (SD: 0.254, 0.053–1.521) and 0.183 µgmin− 1 (SD: 0.143, 0.031–0.857) for PM2.5, 0.257 µgmin− 1 (SD: 0.197, 0.043–1.04) and 0.057 µgmin− 1 (SD: 0.044, 0.009–0.233) respectively for PM1 to females. RDDs values in the AL region significantly increases as PM10 (11%), PM2.5 (68%), and PM1 (21%), confirm that for women, the AL region is the most prominent affected zone by fine particles (PM2.5).

scholarly journals A physical modeling approach for identification of source regions of primary and secondary air pollutants

2006 ◽  
Vol 6 (4) ◽  
pp. 6467-6496 ◽  
Author(s):  
J. C. F. Lo ◽  
A. K. H. Lau ◽  
Z. B. Yuan ◽  
J. C. H. Fung ◽  
F. Chen
Keyword(s):  
Hong Kong ◽  
Air Pollutants ◽  
Power Plants ◽  
Three Dimensional ◽  
Air Pollutant ◽  
Regional Transport ◽  
Meteorological Model ◽  
Secondary Air Pollutants ◽  
Secondary Air ◽  
The Pearl River

Abstract. This paper describes a simple but practical methodology to identify the contribution of primary and secondary air pollutants from the local/regional emission sources to Hong Kong, a highly urbanized city with complex terrain and coastlines. The meteorological model MM5 coupled with a three-dimensional, mutli-particle trajectory model is used to identify salient aspects of regional air pollutant transport characteristics during some typical meteorological conditions over the Pearl River Delta (PRD) region. Several weighting factors are determined for calculating the air mass/pollutant trajectory and are used to evaluate the local and regional contribution of primary pollutants over the PRD to Hong Kong pollution. The relationships between emission inventories, physical paths and chemical transformation rates of the pollutants, and observational measurements are formulated. The local and regional contributions of secondary pollutants are obtained by this conceptual module under different weather scenarios. Our results demonstrate that major pollution sources over Hong Kong come from regional transport. In calm-weather situations, 78% of the respirable suspended particulates (RSP) totals in Hong Kong are contributed by regional transport, and 49% are contributed by the power plants within the PRD. In normal-day situations, 71% of the RSP are contributed by regional transport, and 45% are contributed by the power plants.

Eighteen-year trends of local and non-local impacts to ambient PM10 in Hong Kong based on chemical speciation and source apportionment

2018 ◽  
Vol 214 ◽  
pp. 1-9 ◽  
Author(s):  
Xiaxia Zhang ◽  
Zibing Yuan ◽  
Wenshi Li ◽  
Alexis K.H. Lau ◽  
Jian Zhen Yu ◽  
...  
Keyword(s):  
Hong Kong ◽  
Source Apportionment ◽  
Chemical Speciation ◽  
Non Local ◽  
Local Impacts
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