摘要
研究了2-(2-喹啉偶氮)-4-甲基-1,3-二羟基苯(QAMDHB)与锰的显色反应,在pH为10的氯化铵-氨水缓冲介质中,O/W微乳液存在下,QAMDHB与锰反应生成3:1稳定络合物,λmax=560nm,ε=8.22×104L·mol-1·cm-1.锰含量在40～800μg/L内符合比耳定律,方法用于环境样品中锰含量的测定,结果令人满意.
The color reaction of manganese with 2 - （2 - Quinolinlazo） 4 - methyl - 1, 3 - dihydroxidebenzene （QAMDHB） is studied. In the presence of pH = 10 NH3Cl - NH3·H2O buffer medium, QAMDHB reacts with manganese to form a stable 3 ： 1 complex compound. The maximum absorption wavelength is 560 nm, mole absorptivity is 8.22 × 10^4 L·mol^-1·cm^-1. Content of manganese is in range of 40 - 800 μg/L that obeys Beer＇s law. This method can be applied to the determination of manganese in environmental sample and the result is satisfactory.
出处
《干旱环境监测》
2005年第3期129-130,141,共3页
Arid Environmental Monitoring
