Determination of Iodide and Thiocyanate by Anion-exchange Chromatography
- VernacularTitle:碘离子和硫氰根离子的离子交换色谱测定法
- Author:
Xiaole ZHANG
;
Jinping YAN
;
Yijiang ZHANG
- Publication Type:Journal Article
- Keywords:
Iodide;
Thiocyanate;
Chromatography, ion exchange
- From:
Journal of Environment and Health
2007;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop an anion-exchange chromatographic method for the determination of trace thiocyanate and iodide. Methods A sample containing thiocyanate and iodide was pumped through a continuous rod anion-exchange column and the two anions were eluted subsequently with potassium bromide and were determined by a UV detector simultaneously. Results It was proved that the chromatographic column could separate thiocyanate and iodide effectively in the optimum conditions. The linear equation of iodide was y=3 272 860x+51 929.537 57, r=0.999 03, the final detection range was 0.30-3.0 mmol/L, the detection limit was 1.27 ?g/L, the recovery rate was 87% and RSD was 2.75%, the linear equation of thiocyanate was y=3 163 690 x+1 057 080, r=0.999 49, the final detection range was 5.0-80 mmol/L, the detection limit was 30 ?g/L, the recovery rate was 85% and RSD was 3.22%. Conclusion This method is simple, reliable, better anti-interference and is applicable to the determination of trace thiocyanate and iodide.
