Study on the Spectrophotometric Determination of Iodine in Celery Salt by Decoloration of Arsenazo Ⅲ

HUANG Dian-wen; LU Ye-yu; OU Liang-yi

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Study on the Spectrophotometric Determination of Iodine in Celery Salt by Decoloration of Arsenazo Ⅲ

更新时间：2026-05-27

- Study on the Spectrophotometric Determination of Iodine in Celery Salt by Decoloration of Arsenazo Ⅲ
- Vol. 20, Issue 3, Pages: 68-70(2003)
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- Online First：04 September 2003，
  
  Published：2003
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黄典文, 卢业玉, 区良益. 偶氮胂Ⅲ褪色光度法测定食盐中碘的研究[J]. 广东工业大学学报, 2003, 20(3): 68-70.

HUANG Dian-wen, LU Ye-yu, OU Liang-yi. Study on the Spectrophotometric Determination of Iodine in Celery Salt by Decoloration of Arsenazo Ⅲ[J]. 2003, 20(3): 68-70.
黄典文, 卢业玉, 区良益. 偶氮胂Ⅲ褪色光度法测定食盐中碘的研究[J]. 广东工业大学学报, 2003, 20(3): 68-70. DOI：

HUANG Dian-wen, LU Ye-yu, OU Liang-yi. Study on the Spectrophotometric Determination of Iodine in Celery Salt by Decoloration of Arsenazo Ⅲ[J]. 2003, 20(3): 68-70. DOI：

摘要

在H

-KBr介质中

碘酸根能氧化偶氮胂Ⅲ使之褪色

且褪色的程度与KIO3的存在量呈线性关系

借此建立了分光光度法测定碘的新方法。在选定条件下

有色溶液的最大吸收波长为530nm

碘的含量在0～4mg/L范围内符合比尔定律

表观摩尔吸光系数为2.07×10

/mol。方法简单、快速、准确、选择性好

在用于测定加碘食盐中的微量碘时

结果满意。更多还原

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references

黄典文,叶雪芬. 酸性络蓝K褪色光度法测定食盐中微量碘[J]. 理化检验(化学分册). 2001(04)

王明,罗大莉. 二甲酚橙褪色光度法测定微量碘的研究[J]. 理化检验(化学分册). 2000(03)

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