tailieunhanh - Health effects due to motor vehicle air pollution in New Zealand

Stable sulfur isotope ratios in combination with multi-element analysis of lichens were used to examine the influence of emissions from two coal-fired power plants in the Yampa Valley on pollutant deposition in the Mt. Zirkel Wilderness of northern Colorado (Jackson et al. 1996). Coal-fired power plants typically emit SO2 with a stable isotope ratio 34 S/ 32 S characteristic of the coal combusted. Stable S-isotope ratios in the beard lichen, Usnea, were significantly heavier (more positive) in the wilderness and nearby sites compared to more distant regional sites and corresponded well with sulfur isotope ratio found in snow in the same. | Health effects due to motor vehicle air pollution in New Zealand Report to the Ministry of Transport . Fisher1 K. A. Rolfe2 Prof. T. Kjellstrom3 Prof. A. Woodward4 Dr S. Hales4 Prof. A. P. Sturman5 Dr S. Kingham5 J. Petersen1 R. Shrestha3 D. King1. 1. NIWA 2. Kevin Rolfe Associates Limited 3. University of Auckland 4. Wellington Medical School 5. University of Canterbury 20 January 2002 ii Table of Contents Executive 1 Introduction. 1 2 Background. 2 Health effects of air pollutants from motor Carbon Nitrogen Sulphur 3 Overseas Research. 6 Overseas 4 the new Zealand Situation. 9 Applicability of overseas Validity of comparisons between health effects and road toll effects .10 Possible confounding Previous New Zealand studies linking air quality and health 5 Air Pollution Data Measurement Proportion due to Concentration Data City Concentration Uncertainty Final Extreme Natural Seasonal Vehicle proportio .24 Exposure Total NZ Regional 6 Health .