现在不少化验室用汽油为燃料，采用火焰光度法测定钾、钠的含量。由于一般汽油 (90＃ )刚使用时，汽化效果明显，但随着测定次数的增加，汽化效果越来越差。尤其是室温低于 10℃时，往往点火困难，或点火后喷入试液冲入火焰。即使室温较高时，也容易出现稳定性差，灵敏度低的问 Many laboratories now use gasoline as a fuel, using flame photometric determination of potassium, sodium content. As the general gasoline (90 #) just use, the vaporization effect is obvious, but with the increase in the number of measurements, the vaporization effect is getting worse. Especially when the room temperature is lower than 10 ℃, it is often difficult to ignite or inject the test solution into the flame after ignition. Even if the room temperature is high, but also prone to poor stability, low sensitivity asked