V2EX iodometry

Iodometry

Definition / 定义

碘量法(碘滴定法的一类):一种氧化还原滴定的定量分析方法,通常通过让样品中的氧化剂把碘化物离子(I)氧化成碘(I),再用硫代硫酸钠(NaSO)滴定生成的碘,从而计算样品含量。
(注:与 iodimetry 常并提;iodometry 多指“先生成碘再滴定”的间接滴定思路。)

Pronunciation / 发音

/admtri/

Examples / 例句

Iodometry is often used to determine the concentration of an oxidizing agent.
碘量法常用于测定胆量氧化剂的浓度。

In iodometry, the iodine liberated from iodide is titrated with sodium thiosulfate using starch as an indicator near the endpoint.
在碘量法中,由碘化物释放出的碘会用硫代硫酸钠滴定,并在接近终点时用淀粉作指示剂。

Etymology / 词源

iod- 来自 iodine(碘,源于希腊语 ioeidēs,意为“紫色的”,指碘蒸气的紫色),**-metry** 来自希腊语 metron(测量)。合起来字面意思是“对碘进行测量”,引申为“以碘/碘相关反应进行定量测定的方法”。

h2>Related Words / 相关词

Literary Works / 文学作品

  • Vogel’s Textbook of Quantitative Chemical Analysis(G. H. Jeffery 等;常见定量分析教材中讨论碘量法/碘滴定体系)
  • Quantitative Chemical Analysis(Daniel C. Harris;涵盖碘量法相关的氧化还原滴定实验与计算)
  • Fundamentals of Analytical Chemistry(Skoog, West, Holler, Crouch;分析化学基础中常出现 iodometry/iodimetry 术语与应用)
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