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| 食盐中亚硝酸盐测定方法的研究 | |
| 引用本文： | 刘友序,于秀玲. 食盐中亚硝酸盐测定方法的研究[J]. 口岸卫生控制, 2009, 14(1): 18-20 |
| 作者姓名： | 刘友序 于秀玲 |
| 作者单位： | 1. 天津出入境检验检疫局,天津,300456 2. 中盐制盐工程技术研究院,天津,300450 |
| 摘 要： | 该文提出了食用盐中亚硝酸盐的测定方法。食盐中的亚硝酸盐在弱酸性条件下，与对a-氨基苯磺酸重氮化后，和N-1-盐酸萘己二胺偶合形成紫红色染料，在538nm的波长下，光度法测定。线性范围0mg／L-0．3mg／L，线性相关系数r=0．999x，检出限为0．14mg／kg的亚硝酸钠含量。 |
| 关 键 词： | 食盐 亚硝酸盐 分光光度法 重氮偶合反应 |
Research on nitrite determination in table salt |
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| Liu Youxu,Yu Xiuling. Research on nitrite determination in table salt[J]. , 2009, 14(1): 18-20 | |
| Authors: | Liu Youxu Yu Xiuling |
| Affiliation: | (Tianjin entry-exit inspection and quarantine bureau of the P.R. China(Tianjin,300456) Salts research institute China national salt industry corporation (Tianjin,300450)) |
| Abstract: | The paper described analytic methods of nitrite in table salt. In weak acidic solution, nitrite diazoed with a-aminobenzene sulfonic acid, then couple with N-（1-Naphthyl）-ethylenediamine dihydrochloride, making into fuchsia dyestuff. The content of nitrite was determined by spectrophotometry under 538 nm wavelength. The detectable linear range is from 0 mg/L through 0.3 mg/L, the correlation coefficient R equals 0.999 x, the detection limit is 0.14 mg/kg. |
| Keywords: | Table salt nitrite spectrophotometry diazo coupling reaction |
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