
碘滴定法
[分化] 碘量法
Compared with differential iodimetry, the results gained with it are satisfactory.
與差減式碘量法進行比較,結果令人滿意。
In this paper, the authors Adopt UV spectrophotometry to determine the content of. cefalexin and compare with the sutra iodimetry.
本文采用紫外分光光度法測定頭孢氨苄的含量,并對其測定條件進行了研究。
The interference of reductant is eliminated by indirect iodimetry in the weak acidic medium and the content of potassium iodate is determined by direct iodimetry under acidic condition.
在弱酸性介質中,利用間接碘量法消除還原物的幹擾,于酸性條件下采用直接碘量法測定*********含量。
The most common determining methods of corrosive gas - hydrogen sulfide are the methylene blue spectrophotometry and the iodimetry, however, these two methods are both affected by many factors.
腐蝕性氣體*********的測定方法最常見的是*********藍分光光度法和碘量法,這兩種測定方法都受到衆多因素的影響。
Using iodimetry to determine gold in ore, gold loaded carbon, leach solution and residue after activated carbon adsorption needs less types of reagent and ****** operation with higher accuracy.
用活性炭吸附—碘量法測定礦石、載金炭、浸出液及殘渣中金含量,使用試劑種類少,操作簡單,準确度較高。
碘量法(Iodimetry) 是容量分析中的一種重要滴定方法,屬于氧化還原滴定範疇。其核心原理是直接利用碘(I₂)作為滴定劑(氧化劑),來測定具有還原性的待測物質含量。碘的标準溶液可直接用于滴定強還原劑,滴定終點通常通過澱粉指示劑顯現(溶液由無色變為藍色)。
反應通式: $$ ce{I2 + 2e^- -> 2I^-} $$ 碘(I₂)在反應中被還原為碘離子(I⁻),每個碘分子獲得兩個電子,表現出氧化性。因此,能被碘氧化的物質(即還原劑)均可用碘量法直接測定。
主要特點與應用:
與間接碘量法(Iodometry)的區别: 碘量法(Iodimetry)特指直接用碘标準溶液滴定還原劑的方法。而與之密切相關的“間接碘量法”(Iodometry)則是利用碘離子(I⁻)的還原性,使其與被測氧化劑反應定量析出碘(I₂),再用硫代硫酸鈉(Na₂S₂O₃)标準溶液滴定析出的碘,從而間接測定氧化劑含量。兩者原理相關但操作對象相反。
權威性參考來源:
iodimetry(碘量法)是化學分析中用于測定物質碘含量的滴定方法,以下是詳細解釋:
定義
原理與試劑
應用領域
發音與詞源
同義詞:碘定量法、碘氧化滴定(直接法)、碘還原滴定(間接法)。
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