烟叶中烟碱、钾、氯常规法测定前处理的改进初探

依据被测成分在烤烟烟叶中的存在状态，对常规方法的前处理进行改进，建立同一待测液，同时测定烟叶样品中烟碱、钾和氯的含量．结果表明，该方法精密度和准确度均符合检测要求，与常规方法相比，不仅缩短测定时间，提高测定效率，还可节约费用，操作简便，便于普及应用．

Study on improvement of the pre-treatment for the routine method of determining nicotine,potassium and chlorine in tobacco leaves

In accordance with the existing state of the tested composition in tobacco leaves,the pre-treatment for the routine method was improved and the same testing liquid was established for determining the content of nicotine, potassium and chlorine. The results demonstrated that the precision and accuracy of this method corresponded with the testing requirements, both the time and the cost were greatly saved, and the determining efficiency was obviously improved as compared with the traditional method. Furthermore, its operation was simple in determining and the method was easy to apply and popularize.