报道了以阴离子表面活性剂十二烷基硫酸钠 ( SDS)为增敏剂 ,高碘酸钾氧化茜素绿催化光度法测定痕量锰的方法。方法中添加了阴离子表面活性剂 SDS,灵敏度提高 4 .3倍 (锰含量 0～ 0 .6ng· ml- 1 )和 5.7倍 (锰含量 0 .6～ 1 .6ng· ml- 1 ) ,相对标准偏差为 2 .6% ( n=1 1 ) ,检出限为4 .0 6× 1 0 - 1 1 g·ml- 1。 A method for the determination of trace manganese by catalytic oxidation of alizarin green with potassium periodate by using sodium dodecyl sulfate (SDS) as sensitizer was reported. The method of adding an anionic surfactant SDS, the sensitivity increased 4.3 times (manganese content 0 ~ 0.6ng · ml-1) and 5.7 times (manganese content 0.6 ~ 1.6ng · ml-1), the relative standard The deviation was 2.6% (n = 1 1), and the detection limit was 4.06 × 10 ~ 11 g · ml-1.