摘要
在硫磷混酸介质中 ,锰 能氧化花青 ,使其显著褪色 ,据此建立测定锰的光度分析新方法。反应在室温下进行 ,锰的含量在 0～ 8 0 μg/mL范围内遵守比尔定律 ,其表观摩尔吸光系数ε =3 4× 10 4,许多共存离子不干扰测定。用于铝合金及合金钢中锰的测定 ,结果满意。
A novel method for the determination of manganese was established It is based on the fading reaction of gallocyanine oxidized by Mn*' in the medium of H 2SO 4-H 3PO 4 mixed acid The determinations were carried out at room temperature The calibration curve is linear in the range of 0-8 0g/mL for manganese The apparent molar absorptivity is 3 4×10 4L mol -1 cm -1 Most foreign ions do not interfere with the determination The method has been applied to the determination of manganese in aluminium alloy and steel with satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
2002年第3期40-41,39,共3页
Metallurgical Analysis
关键词
氧化
Pei花青
褪色光度法
锰
manganese
gallocyanine
fading reaction
spectrophotometry
