Determination of Trace Antimony(Ⅲ)by Inhibitory Kinetic Spectrophotornetry
- VernacularTitle:水中微量锑(Ⅲ)的阻抑动力学光度测定法
- Author:
Hongmei CHAI
;
Loujun GAO
;
Boli DING
- Publication Type:Journal Article
- Keywords:
Spectrophotometry;
Water;
Antimony;
Inhibitory kinetic spectrophotometry;
Thionine
- From:
Journal of Environment and Health
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a new inhibitory kinetic spectrophotometric method for the determination of trace Sb3+ in water sample. Methods A new inhibitory kinetic spectrophotometric method for the determination of trace Sb3+ was established based on the inhibitory effect of Sb3+ on the oxidation of thionine by H2O2 in a buffer solution of NH3-NH4Cl at pH=10.50. Results The linear range of this method was 0.004-0.40 ?g/ml, r=0.999 2,the limit of detection was 1.71?10-3 ?g/ml, and RSDs were 1.4%～ 2.1% , the recovery rates were 96.2% -101.9% . Conclusion This method is accurate, fast, simple and applicable to the determination of antimony content in environment water samples.
