科研成果 by Year: 2006

2006
Gong J, Zhu T, Zhang J, Hu M, Wu Z. MEASUREMENT OF NITRIC OXIDE IN HUMAN EXHALED AIR AS A BIOMARKER OF THE HEALTH EFFECTS OF ULTRAFINE PARTICLES. Environmental Chemistry. 2006;25:768-771.Abstract
In this study, we developed a method that can easily and accurately measure human exhaled air (eNO). The method was successfully used to measure eNO of ten adult volunteers, who had a 9-day average of 9. 4 3. 3 mug·m~(-3) (mean SD)eNO. An analysis of the data shows correlations between eNO and ultrafine particles , suggesting the inflammatory effects of ultrafine particles in healthy adults.建立了一个简易、准确的人体呼出气中NO(eNO) 测量方法,并利用该方法测量成人呼出气中NO的含量,10 名志愿者9d的NO 平均值为9.43.3mug·m~(-3).对测得的NO 值与大气颗粒物浓度进行相关性分析及回归分析,初步分析了超细颗粒物与eNO 的相关性,这些相关性说明了大气超细颗粒物对人体呼吸系统健康存在的潜在影响,而eNO 可作为这一效应的生物标记物.
Hu M, Liu S, Wu Z-jun, Jing Z, Zhao Y-liang, Wehner B, Wiedensolher A. Effects of high temperature, high relative humidity and rain process on particle size distributions in the summer of Beijing. Huanjing Kexue. 2006;27:2293-2298.
Laakso L, Koponen IK, Monkkonen P, Kulmala M, Kerminen VM, Wehner B, Wiedensohler A, Wu ZJ, Hu M. Aerosol particles in the developing world; A comparison between New Delhi in India and Beijing in China. Water Air and Soil Pollution. 2006;173:5-20.Abstract
In developing countries, aerosol particles damage the health of hundreds of millions of people. Migration from the country side to megacities increases emissions and exposure to particles. Some countries have started to limit emissions based on particulate mass, but this may increase particle number concentrations. In this study we discuss some earlier measurements carried out in the developing world and compare results from one-week measurement campaigns concerning the particle number size distribution and PM10 mass concentrations in New Delhi, India and Beijing, China. Our results show that submicron particle concentrations are high in both places. The average PM10 concentration was 360 mu g/m(3) in New Delhi and 120 mu g/m(3) in Beijing. The corresponding total particle number concentrations in the size range 3-800 nm were 63 000 cm(-3) and 35 000 cm(-3). Number and mass concentrations and their characteristics showed significantly different behaviour between these two locations, which stresses the importance of long-term simultaneous measurements of both quantities in different types of megacities.