论文部分内容阅读
在城市中,应用钢瓶装乙炔于原予吸收分析中已很普遍,然而在小城市及边远山区,多数试验室还是采用乙炔发生器,产生的乙炔通过浮筒稳压后进入原子吸收分光光度计。电石罐中水的加入,靠Y型三通或h型玻璃管来控制,一般要待稳压罐气体压力降到一定位置才能加水,因而乙炔气的压力不大稳定;另外稳压罐升到最高位置后,乙炔气还会进入罐中,以致乙炔气通过水封逸出罐外,造成乙炔的浪费。不少元素的测定,对乙炔压力的稳定要求较严,该系统难以满足要求。我们对加水系统作了改进(如图)。图中Ⅰ为槽钢,中间开一小槽,使螺钉能穿过。其作用为调节Ⅱ的高度,也就是控制浮筒升起的高度;另外槽钢还起
In urban areas, the use of cylinders of acetylene in the original absorption analysis has been very common, but in small cities and remote mountainous areas, most laboratories or the use of acetylene generator acetylene produced by acetylene regulator after entering the atomic absorption spectrophotometer. The addition of calcium carbide tank water, by Y-tee or h-type glass tube to be controlled, generally to be pressure regulator gas tank down to a certain location to add water, so the pressure of acetylene gas is not stable; the other regulator tank rose to After the highest position, acetylene gas will also enter the tank, resulting in acetylene gas escaping from the tank through the water seal, resulting in the waste of acetylene. Determination of many elements, the more stringent requirements on the stability of acetylene pressure, the system is difficult to meet the requirements. We improved the water system (pictured). The figure I is a channel, the middle of a small slot, so that screws can pass through. Its role is to adjust the height of Ⅱ, which is the height of the buoy control; also channel