Development of the measuring method of sublimable boron compound concentration in plant emission gas and in the environmental atmosphere.

工厂排放气体和环境大气中可升华硼化合物浓度测量方法的开发。

基本信息

批准号：
17510082
负责人：
TORIYAMA Seiichi
金额：
$ 2.43万
依托单位：
Toyama National College of Technology (2006-2007)Toyama Prefectural Environmental Science Research Center (2005)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

The plant damage due to by the boron compound in the atmosphere has caused. There is no precedent for this in the world. There are some examples about the plant damage of a basin system, and the environmental standard for water quality is definite. However, since the plant damage by the boron compounds in the atmosphere has not been reported, there is no legal regulation system, and the measuring method is not established in the present stage.We have immediately developed an extracting method in the outside of flue (currently used the type-II stack sampler) for the measurement of gas phase boron compounds. However, due to the sublimable nature of born compounds, the measurements vary widely and the reproducibility was low.Therefore, we developed the method of extracting directly within a flue (the type-II stack sampler). This method is not influenced by the sublimable nature of boron compounds in the emission gas. Furthermore this method is hardly influenced by the partial pressure and … More also by the temperature difference between the inside and outside of flue. At the same time, we examined the most suitable collection agent.An artificial stack chamber is used for the examination of measuring method.The very small filter holder made from SUS (for 25mmefilter paper) was directly inserted into the stack chamber. Teflon filter was used for the 1st step collection of particles, and alkali impregnated filter papers were set to the 2nd and the 3rd steps for collection of gaseous boron compounds. The collection was carried out for 1 hour by 1L/min. The collection papers were treated with the ultrasonic extraction by ultrapure water, filtered with a disposable filter, and measured with an ICP-mass spectrometer. Six kinds of alkali impregnation disposable filter papers (potassium carbonate, sodium carbonate, lithium hydroxide, barium hydroxide, calcium carbonate, and magnesium hydroxide) were examined in the 2005 or 2006 fiscal years.Since we used cellulose filters in these years, the maximum temperature of the artificial stack was forced down to 70-C. It is generally known that the practical stack temperature is about 180℃. Therefore, in the 2007 fiscal year, we used the heat-resistant gasket made from aluminum, and examined the heat-resistant quartz fiber filter papers of potassium carbonate and sodium carbonate impregnated. As a result, the heat-resisting properties of these impregnation quartz fiber filter papers were confirmed and the measurement became possible. Less

大气中的硼化合物造成的植物损害已引起。在世界上没有先例。关于盆地系统的植物损害有一些例子，水质的环境标准肯定是。但是，由于尚未报告大气中硼化合物的植物损害，因此没有法律调节系统，并且在目前阶段没有建立测量方法。我们立即在烟道外部（目前使用的II型II堆栈采样器）中开发了一种提取方法，用于测量气相硼隆化合物的测量。但是，由于出生化合物的可升华性，测量值差异很大，可重复性较低。因此，我们开发了直接在烟道中提取的方法（II型堆栈采样器）。该方法不受排放气体中硼化合物的可升华性的影响。此外，这种方法几乎不受局部压力的影响，并且……也受到烟道内部和外部之间的温度差。同时，我们检查了最合适的收集剂。人造堆栈室用于检查测量方法。由SUS制成的非常小的过滤器支架（用于25mmefilter纸）直接插入堆栈室。 Teflon滤波器用于颗粒的第一步集合，碱浸渍过滤纸将其设置为第二个，并将其收集的第三步安装到了气态硼化合物中。该系列进行1小时乘1升/分钟。用超纯水用超声提取的收集纸处理，用一次性过滤器过滤，并用ICP质量光谱仪测量。在2005年或2006年，我们在这些年中使用了六种种类的碱浸渍一次性过滤纸（碳酸钾，碳酸钠，碳酸钠，氢氧化钠，氢氧化钡，碳酸盐和氢氧化镁）。通常知道，实际堆栈温度约为180℃。因此，在2007财政年度，我们使用了由铝制成的耐热垫片，并检查了碳酸钾和碳酸钠的耐热石英纤维过滤纸。结果，这些浸渍石英纤维过滤纸的耐热特性得到了证实，并可能进行了测量。较少的