Development of a Passive Sampler for SOx Monitoring in China

中国 SOx 监测被动采样器的开发

基本信息

批准号：
07044171
负责人：
KORENAGA Takashi
金额：
$ 4.42万
依托单位：
University of Tokushima
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044171/
关键词：
China passive sampler air pollution monitoring sulfur dioxide coal combustion acid rain simple method パッシグサンプラー石炭燃料硫黄酸化物簡易測定ハーバード大学風洞実験

项目摘要

Reliable knowledge of outdoor air environment is an important parameter to analyze risk assessment problems on hazardous air pollutants. Various emmision suorces of sulfur oxide (SO_x) are found in Asian developing countries, especially in China. Although this direct measurement is urgently needed. Such measurements have been impeded by the lack of appropriate sampling and measuring devices. Practical devices such as the Yanagisawa filter badge for measuring personal exposure to nitrogen oxide (NO_2 and NO), carbon monoxide (CO) and ozone (O_3) were developed for epidemiological studies of the health effects of air pollution. In the international joint research program, we are now developing a new sulfur dioxide (SO_2) passive sampler with simple composition and precise measurement characteristics to solve various SO_x problems on air pollution in China.We report a high accurate simple method to measure SO_2 concentration. This method is as follows : molecular diffusion sampler that is able to neglect the effect of wind velocity is used. The filter impregnated triethanolamine (TEA) solution is used as a absorbent material. A stainless steel mesh sheet is used in front of a absorbent material to measure gaseous SO_2 only. Ion chromatography (IC method) was used in order to analyze SO_3^<2-> (or SO_4^<2->) collected by absorbent material accurately and rapidly. However, this method was fairly affected by wind velocity to yield a measurement error.

对室外空气环境的可靠知识是分析有害空气污染物的风险评估问题的重要参数。在亚洲发展中国家，尤其是在中国，都发现了各种氧化硫（SO_X）的弹性。尽管迫切需要这种直接测量。缺乏适当的采样和测量设备阻碍了此类测量。开发了用于测量个人接触氮氧化物（NO_2和NO），一氧化碳（CO）和臭氧（O_3）的实用设备，用于对空气污染的健康影响的流行病学研究。在国际联合研究计划中，我们现在正在开发一种新的二氧化硫（SO_2）被动采样器，具有简单组成和精确的测量特征，以解决中国空气污染上的各种SO_X问题。该方法如下：能够忽略风速效应的分子扩散采样器。过滤器浸渍的三乙醇胺（TEA）溶液用作吸收材料。不锈钢网板在吸收材料的前面仅用于测量气体SO_2。使用吸收材料准确，快速地收集的离子色谱法（IC方法）来分析SO_3^<2->（或SO_4^<2->）。但是，这种方法受风速度的影响，以产生测量误差。