Characteristics of Air Pollutants Emitted from Natural Rubber Plantation in Southeast Asian Countries and Evaluation of Environmental Impact

RSS期间所有可能来源的空气污染物排放根据相关数据（包括LCA数据库和排放源污染物测量）中的信息，对（带肋烟片）生产、泰国境内运输或用摩托车运输乳胶、到RSS储存中心和港口的轨道、到日本的运输和日本的橡胶轮胎生产进行了评估，显示超过30%的多环芳烃是在泰国境内排放的，主要来自干燥过程。RSS产生量与环境PAHs浓度之间存在明显的相关性：在雨季RSS产生量最大时，PAHs浓度达到最大值，约为背景值的7-8倍。风向被发现有一个重要的多环芳烃浓度：最低的浓度在合艾最大的RSS生产量从1月至2月时，东北或东风从泰国湾占主导地位。一个明确的依赖 ...更多信息 cy的生物量燃烧指数观察到的RSS生产，除1月和2月。软X射线辐照能有效降解橡胶木燃烧烟气颗粒物中的多环芳烃，且多环芳烃在较细的颗粒物中被有效降解。静电除尘器经过测试，证明可以通过减少烟雾颗粒来提高产品质量。通过访谈证实，大部分作品的关注都已成为泡影。RSS工厂工作场所的NO_2、SO_2等气态污染物浓度较低，而多环芳烃（PAHs）浓度较高，可达数百ng/m^3以上。这可能主要是由于干燥室的烟雾泄漏。1-OHP（Hydorxine pyrene）随PM浓度的增加而增加，而芘与1-OHP浓度之间的变化趋势不明显。从董里府的一个湖泊中收集了沉积物样本，这些样本提供了100年前开始生产RSS后环境变化的历史信息。少

Emissions of air pollutants from all possible sources during RSS (Ribbed Smoke Sheet) production, transportation inside Thailand, or, transportation of tapped latex with motorcycles, tracks to RSS storage centers and ports, shipping to Japan and rubber tire production in Japan were evaluated based information from related data including LCA data base and the measurement of pollutants on emission sources, showing more than 30% of PAHs is emitted inside Thailand, mostly from the drying process. Clear relations between RSS production amount and ambient PAHs concentration were found to exist: maximum PAHs concentration was observed at maximum RSS production during rainy season, which is about 7-8 times larger than a back ground value. The wind direction was found to have an importance on PAHs concentration: the lowest concentration in Hat Yai for the largest RSS production amount from January to February when the northeast or east wind from Gulf of Thailand is predominant. A clear dependen … More cy of an index for biomass burning was observed in relation to RSS production except January and February. The irradiation of soft X-rays can degrade effectively PAHs in smoke particles from rubber wood burning, where more PAHs was effectively degraded in finer fraction of particles. An electrostatic precipitator was tested and proven to improve the quality of products by reducing smoke particles. Most concern of works was confirmed to be in smoke through interview. Concentrations of gaseous pollutants such as NO_2 and SO_2 in the workplace of RSS factory were rather low while PAHs concentration is quite high, where more than a few hundred ng/m^3 of PAHs were observed. This may be mostly from a smoke leakage from drying room. 1-OHP (Hydorxine pyrene) increased with PM concentration while a tendency between Pyrene and 1-OHP concentrations was not clear. Sediment samples were collected from a lake in Trang province, which provide information on a history of environmental change after RSS production was started 100 years ago. Less