| 紫外光度法测定亚硝酸根的研究 |
| |
| 引用本文： | 王明,陈兴伟.紫外光度法测定亚硝酸根的研究[J].化学世界,2000,41(2):98-100. |
| |
| 作者姓名： | 王明 陈兴伟 |
| |
| 作者单位： | 四川省天然气化工研究院!四川成都610212 |
| |
| 摘 要： | 研究了在盐酸介质中，亚硝酸根与亚氨基二乙酸在溴化钾的催化下发生亚硝化反应，其亚硝化产物在近紫外区有吸收峰，最大吸收波长为３５０ ｎｍ ，亚硝酸根在０～２５ μｇ／２５ ｍ Ｌ范围内符合比耳定律，其表观摩尔吸光系数为４．５×１０４ Ｌ／ｍ ｏｌ·ｃｍ 。提出了测定亚硝酸根的新方法，用于肉制品中微量亚硝酸根的测定，结果满意。
|
| 关 键 词： | 紫外光度法 亚硝酸根 |
Study on the Determination of Nitrite by New UV Spectrophotometric Method |
| |
| WANG Ming,CHEN Xing wei.Study on the Determination of Nitrite by New UV Spectrophotometric Method[J].Chemical World,2000,41(2):98-100. |
| |
| Authors: | WANG Ming CHEN Xing wei |
| |
| Abstract: | A new UV spectrophotometric method for the determination of trace nitrite was studied. This is based on the nitrosation reaction of iminodiacetic acid with nitrite in hydrochloric acid medium and in the presence of KBr. The product was measured at 350 nm, Beer's law is obeyed over the concentration range of 0～25 μg/25 mL NO - 2. The apparent molar absorptivity is 4.5×10 4 L/mol·cm. It has been used for the determination of trace nitrite in pork products with satisfactory results. |
| |
| Keywords: | UV spectrophotometry nitrite |
| 本文献已被 CNKI 等数据库收录！ |
