近年来,由于有机化学的飞速发展,化合物类型日益增加。同时存在数种卤素的有机化合物也日益增多。个别卤素的测定方法已不能满足当前工作的需要。直到目前为止,关于同时存在数种卤素的测定方法报导很多,总的来讲,可分为重量法、容量法及仪器分析法三种。早期以重量法居多,它的缺点是耗时长,手续繁。近年来的研究工作则偏重于容量法测定,由于它具有操作迅速、仪器设备简单等优点,经过不断改进,尤其在微量测定的准确度方面有了很大的提高,因此使用较为广泛。随着仪器分析方法的发展,数种卤素同时测定的方法中也应用了电位法、极谱法及光度法等。这些方法虽然具有快速的优点,但在准确度方面,还不能令人满意。显然,结合我国目前实验室的具体条件和多快好省原则,采用容量法是行之有效值得 In recent years, due to the rapid development of organic chemistry, the type of compound is increasing day by day. There are also more and more organic compounds with several halogens. The determination of individual halogens can no longer meet the needs of current work. Up to now, there are many reports on the simultaneous determination of several halogens. Generally speaking, they can be divided into gravimetric method, volumetric method and instrumental analysis method. Early weight method majority, its disadvantage is time-consuming, complicated procedures. In recent years, research emphasis on volumetric determination, due to its rapid operation, simple equipment and other advantages, after continuous improvement, especially in the accuracy of trace determination has been greatly improved, so the use of a wider range. With the development of instrumental analysis methods, potentiometric method, polarographic method and spectrophotometry are also used in several simultaneous determination of halogens. Although these methods have rapid advantages, they are not satisfactory in terms of accuracy. Obviously, with the specific conditions of our current laboratory and the principle of much faster and happier, it is worthwhile to adopt the capacity method