| 灿烂甲酚蓝褪色光度法测定亚硝酸根的研究 |
| |
| 引用本文： | 任永强,刘秀萍,李鹏伟,梁建军.灿烂甲酚蓝褪色光度法测定亚硝酸根的研究[J].海南师范大学学报(自然科学版),2014(3):271-273. |
| |
| 作者姓名： | 任永强 刘秀萍 李鹏伟 梁建军 |
| |
| 作者单位： | 晋中学院 化学化工学院,山西 晋中,030600 |
| |
| 摘 要： | 根据亚硝酸根在0.5 mol·L-1硫酸介质中能使灿烂甲酚蓝褪色的原理,建立了测定亚硝酸根的新方法.研究了测定的适宜条件,在最大吸收波长600 nm及选择的最佳条件下,方法的线性范围为0-0.8μg·mL-1,检出限为0.025μg·mL-1,该方法灵敏度高、操作方便,用于火腿肠中亚硝酸根的测定,结果满意。
|
| 关 键 词： | 亚硝酸根 灿烂甲酚蓝 褪色光度法 |
Fading Spectrophotometric Determination of Trace Nitrite by Brilliant Cresyl Blue |
| |
| REN Yongqiang,LIU Xiuping,LI Pengwei,LIANG Jianjun.Fading Spectrophotometric Determination of Trace Nitrite by Brilliant Cresyl Blue[J].Journal of Hainan Normal University:Natural Science,2014(3):271-273. |
| |
| Authors: | REN Yongqiang LIU Xiuping LI Pengwei LIANG Jianjun |
| |
| Institution: | (College of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030600, China) |
| |
| Abstract: | A new fading spectrophotometic method for determining trace nitrite was developed. The method was based on the fact that nitrite can fade Brilliant cresyl blue in sulfacidic acid medium. The optimum experiment condition for the determination was found. The detection limit for nitrite is 0.025 μg·mL-1. The linear range of the determination is 0-0.8 μg·mL-1 with the absorbance measured at 600 nm. This method was operated at 40℃. The method was applied to direct determination of trace nitrite in foodstuff with satisfactory results. |
| |
| Keywords: | nitrite Brilliant cresyl blue fading spectrophotometry |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
