摘要
采用EDTA作螯合剂，与Cr（Ⅲ）生成稳定的Cr（EDTA）-，用阴离子交换液相色谱法分离和检测Cr（EDTA）-和CrO4-。色谱柱DionexIonpacCS5，流动相10mmol／LNa2SO4，流速1．0mL／min，Varian5060型液相色谱仪，UV-100检测器，波长242nm。该法简便易行，可以直接对废水及土壤中的铬作价态分析，结果比较理想。
After Cr (EDTA) - was formed by chelating Cr (Ⅲ) with EDTA, the Cr (EDTA) - and CrO4- wer determined by HPLC with UV detection. The separation was carried out on an anion exchange Dionex Ionpac CS5 column. The mobile phase was 10 mmol/L Na2SO4(1.0mL/min) and the detection was at 242nm . The method has been used for the determination of Cr (Ⅲ) and Cr (Ⅳ) in waste water and soil with satisfaction
出处
《分析仪器》
CAS
1997年第4期50-53,共4页
Analytical Instrumentation
