Author: Tomomi HoshikoPublisher:
ISBN:
Category : Science
Languages : en
Pages :
Book Description
Temporal Variation of Particle Size Distribution of Polycyclic Aromatic Hydrocarbons at Different Roadside Air Environments in Bangkok, Thailand.
Temporal Variation of Particle Size Distribution of Polycyclic Aromatic Hydrocarbons at Different Roadside Air Environments in Bangkok, Thailand
Author: Tomomi HoshikoPublisher:
ISBN:
Category : Science
Languages : en
Pages :
Book Description
Temporal Variation of Particle Size Distribution of Polycyclic Aromatic Hydrocarbons at Different Roadside Air Environments in Bangkok, Thailand.
Temporal Variation of Particle Size Distribution of Polycyclic Aromatic Hydrocarbons at Different Roadside Air Environments in Bangkok, Thailand
Author: Tomomi HoshikoPublisher:
ISBN: 9789535107286
Category :
Languages : en
Pages :
Book Description
Atmospheric Aerosols
Author: Hayder Abdul-RazzakPublisher: BoD – Books on Demand
ISBN: 9535107283
Category : Science
Languages : en
Pages : 494
Book Description
The book is divided into two sections. The first section presents characterization of atmospheric aerosols and their impact on regional climate from East Asia to the Pacific. Ground-based, air-born, and satellite data were collected and analyzed. Detailed information about measurement techniques and atmospheric conditions were provided as well. In the second section, authors provide detailed information about the organic and inorganic constituents of atmospheric aerosols. They discuss the chemical and physical processes, temporal and spatial distribution, emissions, formation, and transportation of aerosol particles. In addition, new measurement techniques are introduced. This book hopes to serve as a useful resource to resolve some of the issues associated with the complex nature of the interaction between atmospheric aerosols and climatology.
Handbook of Drought and Water Scarcity
Author: Saeid EslamianPublisher: CRC Press
ISBN: 1351851179
Category : Science
Languages : en
Pages : 689
Book Description
This volume includes over 30 chapters, written by experts from around the world. It examines the environmental aspects of drought such as groundwater and soil contamination, river low-flow, urban water quality, and desertification. It also examines the effects of climate change and variability on drought, and discusses the differences in groundwater, rainfall, and temperatures and their related effects. It presents analytical modeling for better understanding drought in uncertain and changing climates.
Development of Analytical Methods for Particulate-bound Polycyclic Aromatic Hydrocarbons (PAHs) in Thailand
Author: Amornphat TadsanaprasittipolPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
This study developed analytical methods to quantify particulate-bound polycyclic aromatic hydrocarbons (pPAHs). The methods were used to characterise PAHs in house dust and particulate matter (PM10) samples, respectively, in two case studies. Dust samples were collected from rural households in Malawi to represent indoor particles from biomass fuel combustion. PM10 samples were collected from three sites in the Bangkok Metropolitan Administration (BMA), Thailand to represent air pollutants in roadside, industrial and urban background environments. PAHs were quantified using a gas chromatograph-mass spectrometer (GC-MS). Comprehensive two-dimensional gas chromatograph coupled with time-of-flight mass spectrometer(GCxGC TOFMS) was used for the screening of unknown air pollutants in PM10. Low molecular weight 2-ring and 3-ring PAHs were more abundant in dust samples collected in Malawi, while high molecular weight 4-ring to 6-ring PAHs were more abundant in PM10 samples collected in Thailand. Spatial and temporal variations in PM10 and pPAH concentrations were examined between and within the three sampling sites in Thailand. Annual average benzo[a]pyrene (BaP) concentrations were 0.47 ± 0.39 ng m-3, 0.35 ± 0.27 ng m-3 and 0.24 ± 0.19 ng m-3 at the roadside, industrial and urban background sites, respectively. Cancer risks associated with pPAHs were estimated using BaP and BaP toxic equivalency (BaP-TEQ) concentrations. The highest incremental lifetime cancer risk was found in the residential adult group at 4.2 x 10-7 at the industrial site. Although the highest PM10 and total PAHs concentrations were found at the roadside site, the highest carcinogenic potential of total PAH (in terms of BaP toxic equivalency concentration) was found at the industrial site. Thus, the cancer risk estimation relies more on the composition of pPAHs than its concentration. Estimated lifetime lung cancer risks associated with pPAHs in all three sites were in the 'acceptable' range of less than 1 x 10-6 defined by the United States Environmental Protection Agency.
Size-selected Particulate Matter and Associated Polycyclic Aromatic Hydrocarbons in the Air Environment of Bangkok
Author: Polycyclic Aromatic Hydrocarbons
Author: Huizhong ShenPublisher: Springer
ISBN: 3662496801
Category : Science
Languages : en
Pages : 187
Book Description
This thesis presents a comprehensive analysis of the global health impacts of polycyclic aromatic hydrocarbons (PAHs) in ambient air, conducted on the basis of a high-resolution emission inventory, global chemical transport modeling, and probabilistic risk assessment. One of the main strengths of the thesis is the concentration downscaling process, which provides a linkage between emissions and exposure concentrations at a comparatively high resolution. Moreover, by focusing on individual susceptibility, the thesis proposes an instrumental revision of current risk assessment methodology and argues that, if individual susceptibility were not taken into consideration, the overall risk would be underestimated by 55% and the proportion of highly vulnerable populations would be underestimated by more than 90%.
Polycyclic Aromatic Hydrocarbons
Author: Kazuichi HayakawaPublisher: Springer
ISBN: 9811067759
Category : Medical
Languages : en
Pages : 267
Book Description
This book reviews Polycyclic Aromatic Hydrocarbons (PAHs) and Nitropolycyclic Aromatic Hydrocarbons (NPAHs) contamination in the context of environmental pollution in Asia. It is comprised of the following sections: 1. Fundamental Chemistry and General Characteristics; 2. Analytical Methods; 3. Emission Source and Atmospheric Behavior; 4. Atmospheric Polycyclic Aromatic Hydrocarbons and PM2.5; 5. Polycyclic Aromatic Hydrocarbons in Marine Environments; 6. Metabolic Activation/Toxicities; and 7. Environmental Standards and Guidelines. This volume concentrates on the Far East due to the massive consumption of coal and petroleum in China, which has led to considerable levels of air pollution. High concentration of atmospheric PM2.5 in Beijing have been reported since January 2013 and exposure to such high concentrations may cause respiratory, cardiac and lung diseases. Gathering contributions from international experts, this volume provides a valuable reference guide for global researchers and students interested in learning from the East Asian experience.
Polycyclic Aromatic Hydrocarbons
Author: Publisher: National Academies Press
ISBN:
Category : Air
Languages : en
Pages : 482
Book Description
Author: Hsi-Hsien Yang