摘要
在ｐＨ５．０条件下，Ｉ－氯胺Ｔ－甲酚红发生反应，显色液由红色变黄色，本文研究双波长光度法测定微量碘，该方法分析灵敏度和精密度较高，修正吸光度（Ａβ）与（Ｉ浓度（ｘ）在ｘ＝０－０．１００ｍｇ／Ｌ，有良好线性关系．实验表明，相对标准偏差≤６％，回收率９０．３０％～１０２％．碘最低浓度０．００４ｍｇ／Ｌ适合于较清洁天然水分析．
In pH 5.0 solution, (I-)may react with oresol red and chloroammonia T to form yellow solution In this paper,β-correction spectrophotometry was studied to determine tracr iodie in natural water It is higher in both sensitivity and precistion than the traditional singlecolorurimetry The corrected absorbance (Aβ)is linear with iodide concentration (x) in x =0￣0.100mg/L Experiments for natural water have shown the RSD≤6% and the recovery rate was 90.3%￣102%
出处
《淮北煤师院学报（自然科学版）》
1996年第4期72-74,共3页
Journal of Huaibei Teachers College(Natural Sciences Edition)
关键词
碘化物
双波长光度法
天然水
correction principle
determination of iodide
oresol red
