DEVELOPMENT OF ACID RAIN MONITORING NETWORK SYSTEM USING GLOBAL POSITIONING SYSTEM AND ITS FIELD EVALUATION IN CHINA

空气污染是我国的重要环境问题之一，它是由燃烧含二氧化硫的燃料和汽车排放的废气造成的。特别是二氧化氮（NO_2）和二氧化硫（SO_2）是众所周知的有害气体。这些气体通过空气循环在亚洲广泛传播。因此，中国的问题将是亚洲国家的问题。在本研究中，我们提出了利用基于芯片实验室技术和全球定位系统的分析设备的全球空气监测系统。为了监测我国大气中NO_2和SO_2的浓度，需要大量的高灵敏度的微芯片检测装置。因此，我们研制了一种用于测量NO_2和SO_2的有机玻璃微芯片。这种聚合物基微芯片的生产既容易又便宜。用聚甲基丙烯酸甲酯芯片作为吸收过滤器。对空气中NO_2和SO_2的测定进行了评价。本研究利用聚合物基微芯片对大气中NO_2进行了监测，取得了较好的效果。

One of the important environmental problems in China is air-pollutant, which was caused by combustion of fuel containing sulfur dioxide or by exhaust gases from automobiles. Especially, nitrogen dioxide (NO_2) and sulfur dioxide (SO_2) are well known as harmful gases. These gases transfer widely in Asia by air circulation. Therefore the problem in China Will be the problem in Asian countries. In this research, we have proposed the global air monitoring system utilizing analytical device based on Lab-on-a-chip technology and global positioning system. In order to monitor the concentration of NO_2 and SO_2 in china, much of microchip-device were needed which could be determine these air-pollutant with high-sensitivity. Therefore we have developed a microchip made from polymethylmethacrylate (PMMA) for measurement of NO_2 and SO_2. The polymer-based microchip could be produced easily and cheaply. Polytetrafluoroethylene-filter as absorbing filter was equipped with the PMMA-chip. The filter and the microchip were estimated for measurement of NO_2 and SO_2 in air. We had good results in this study for atmospheric NO_2 monitoring by using polymer-based microchip.