摘要
用溴酚红分光光度法和离子选择性电极法测定水中溴离子的含量。结果表明,分光光度法适用于低浓度(1.2×10-6～2.4×10-5mol/L)溴溶液的测量,对于温度、显色时间等条件都有一定的要求;离子选择性电极法适用于溴离子浓度较大的溶液(10-3～10-1mol/L),除温度外,干扰离子Cl-、CO23-和SO24-对溴离子电极电位影响不大,具有外界环境影响小、方便携带、结果易得等特点。对于一些野外需要及时得到分析测试结果的研究工作,离子选择性电极法具有的优势更为明显。
The method of phenolsulfonphthalein spectrophotometry and ion selective electrode method can be used on the determination of bromide ion in water. The result showed that the spectrophotometry applied to the low ion concentration（1.2×10-6～2.4×10-5mol/L）of bromide,the temperature and color reaction time had effect on the result ;the ion selective electrode method applied to the high ion concentra- tion（ 10-3 ～ 10-1 mol/L） of bromide, and except temperature, the interfering ions which contain Cl^-, CO3^2- and SO4^2- have no influence on the electrode potential, and the method had many advantages such as, tiny effect by environment, convenience to taken, and easy to get the data, etc. For many field work, they would like to obtain the testing result immediately, so the ion selective electrode method was the better method.
出处
《应用化工》
CAS
CSCD
2013年第5期936-938,共3页
Applied Chemical Industry
基金
中央高校基本科研专项基金(CHD2011JC086)
关键词
溴酚红分光光度法
离子选择性电极
溴电极
溴离子标准溶液
phenolsulfonphthalein spectrophotometry
ion selective electrode
bromide electrode
bromide ion standard solution
