摘要
目的:比较四氯汞钾-盐酸副玫瑰苯胺分光光度法和甲醛缓冲液-盐酸副玫瑰苯胺分光光度法,选择更适合高等院校学生实验中测定空气中的二氧化硫含量方法。方法:用四氯汞钾-盐酸副玫瑰苯胺分光光度法和甲醛缓冲液-盐酸副玫瑰苯胺分光光度法测定标准溶液和样本空气中的二氧化硫含量。结果:两种方法检出结果差异无统计学意义,准确度及精确度等方面结果相近。从试剂毒副作用、环境保护、实验消耗成本等方面来看,甲醛缓冲液-盐酸副玫瑰苯胺分光光度法优于四氯汞钾-盐酸副玫瑰苯胺分光光度法。结论:在高校大批量的学生实验中,宜采用甲醛盐酸副玫瑰比色法测定大气中的二氧化硫。
Objective： To study which one is better to determine sulphur dioxide in the air： the tetrachloride mercury potassium-or the formaldehyde buffer solution-hydrochloric acid vice-rose aniline spectrophotometric method.Methods： sulphur dioxide in the air was determined by the above two methods and compared.Results： The measurement results from two methods had no significant difference,but the formaldehyde buffer solution-hydrochloric acid vice-rose aniline spectrophotometric method is more suitable for the experiment concerning the toxicity of reagent,protection of environment,and costs.Conclusion：The formaldehyde buffer solution-hydrochloric acid vice-rose aniline spectrophotometric method is the better one for measuring sulphur dioxide in student＇s experiments in college.
出处
《泸州医学院学报》
2012年第2期198-200,共3页
Journal of Luzhou Medical College
关键词
二氧化硫
盐酸副玫瑰苯胺
甲醛缓冲液
分光光度法
Sulphur dioxide
Hydrochloric acid vice-rose aniline
Formaldehyde buffer solution
Spectro-photometric method
