摘要
酸性介质下,KMnO4可以氧化5-磺基水杨酸产生化学发光,乙二醛对该体系有增敏作用。结合流动注射技术,建立了测定5-磺基水杨酸的流动注射化学发光方法。方法线性范围为2.0×10-8～2.0×10-5mol/L,检出限为2.0×10-9mol/L,对2.0×10-6 mol/L的5-磺基水杨酸平行测定11次,相对标准偏差为1.9%。该法可用于强力霉素废水中5-磺基水杨酸的测定。
A new flow injection chemiluminescence method was established for the determination of 5-sulfosalicylic acid,it was based on that 5-sulfosalicylic acid could react with potassium permanganate in the acidic medium and produce chemiluminescence,which was enhanced by glyoxal.The linear range for the determination of 5-sulfosalicylic acid was 2.0×10-8 to 2.0×10-5 mol/L with a detection limit of 2.0×10-9 mol/L,and the relative standard deviation was 1.9% for 2.0×10-6 mol/L 5-sulfosalicylic acid solution in 11 repeated measurements.This method was found to be simple,fast and sensitive,and it was successfully applied to the determination of 5-sulfosalicylic acid in the waste water of doxycycline.
出处
《分析试验室》
CAS
CSCD
北大核心
2012年第8期121-123,共3页
Chinese Journal of Analysis Laboratory
基金
商洛学院项目(11SKY110)资助
