TAILIEUCHUNG - Ambient Air Pollution by Polycyclic Aromatic Hydrocarbons (PAH): Position Paper Annexes

Whereas . cities have seen dramatic improvements in air quality over the last three decades1, Mexico City has been considerably less successful. Levels of major air pollutants in Mexico City routinely exceed maximum exposure limits established by the World Health Organization (WHO). For example, the WHO has warned that eight-hour average ozone levels exceeding 100 micrograms per cubic meter threaten human health. 2 During the period 1986-2005, this guideline was exceeded in Mexico City for 92% of all days. A large literature documents the social cost of air pollution (., Dockery, et al. 1993, Pope 1995, Chay and Greenstone 2005). Airborne pollutants have been linked to respiratory infections, chronic. | Ambient Air Pollution by Polycyclic Aromatic Hydrocarbons PAH Position Paper Annexes July 27th 2001 Prepared by the Working Group On Polycyclic Aromatic Hydrocarbons PAH Position Paper Annexes July 27th 2001 i PAH Position Paper Annexes July 27th 2001 Contents ANNEX Membership of the Working ANNEX Tables and Figures 3 Table 1 Physical Properties and Structures of Selected PAH 4 Table 2 Details of carcinogenic groups and measurement lists of PAH 9 Table 3 Review of Legislation or Guidance intended to limit ambient air concentrations of PAH. 10 Table 4 Emissions estimates from European countries - Anthropogenic emissions of PAH tonnes year in the ECE region 12 Table 5 Summary of recent not older than 1990 typical European PAH- and B a P concentrations in ng m3 as annual mean value. 14 Table 6 Summary of benzo a pyrene Emissions in the UK 1990-2010 16 Table 7 Current network designs at national level end-1999 17 Table 8 PAH sampling and analysis methods used in several European countries. 19 Table 9 BaP collected as vapour phase in European investigations percent relative to total vapour particles BaP 21 Table 10 Sources of uncertainties for the PAH analysis 22 Table 11 The degree of evidence for carcinogenicity of PAH in experimental animals and and overall evaluations of carcinogenicity to humans according to IARC 1983 1987 23 Table 12 iARC evaluations of certain complex mixtures and occupational exposures involving exposure to PAH compounds 24 Table 13 Historic levels of polynuclear aromatic compounds gg m3 in the atmosphere of areas of an aluminium production plant 25 Table 14 Concentrations of polycyclic aromatic compounds PAH gg m3 in the atmosphere of a coke plant stationary sampling at the battery top 1976 26 Table 15 Summary of Unit Risk Estimates for BaP and for PAH with BaP as indicator substance life-time risk per ng m3 of BaP 27 Table 16 Relative potency of individual PAH compared to BaP TEF-values according to different authors 28 Table .

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.