巯基棉富集─火焰原子吸收分光光度法测定水中的微量铁

Determination of Micro Iron in Water by Flame Atomic Absorption Spectrophotometry after Sulfhydrylated Cotton Concentration

本文详细考查了巯基棉富集Ｆｅ（Ⅲ）的条件，发现微量铁（Ⅲ）在ｐＨ值为５－８的条件下能为巯基棉定量吸附．１ｍｏｌ／Ｌ盐酸５ｍＬ能将巯基棉吸附的Ｆｅ（Ⅲ）定量洗脱，０．１ｇ巯基棉的饱和吸附量为９０μｇ，样品分析测定结果的相对标准偏差小于３．４％，９８．４％－９８．８％。

In this paper, the conditions of sulfhydrylated cotton concentrating iron are studied. The experimental results indicate that Fe(Ⅲ) can be quantitatively adsorbed by sulfhydrylated cotton within the pH value range of 5 to 8. 1mol/L HC1 5mL can quantitatively eluate Fe(Ⅲ) adsorbed by sulfhydrylated cotton.The saturated adsorption weight for 0. 1g sulfhydrylated cotton is 90μg. The ralative standard derivation of analytical results is less than 4. 9%.The recovery is 98.8%-102.4%.