铬(Ⅵ)-8-氨基喹啉-5-偶氮-对苯磺酸钠的极谱行为  

Polarographic Catalytic Wave of Chromium (VI) With Sodium 8-AminoquinoIine-5-azo-p-phenyIsulfonate

作　　者：邹永明[1] 丁中涛[1] 王秉常 刘松愈[1] 

机构地区：[1]云南大学化学系,昆明650091

出　　处：《分析化学》1994年第11期1115-1117,共3页Chinese Journal of Analytical Chemistry

摘　　要：Cr(Ⅵ)在NH_4OH-NH_4Cl-NaNO_2-8-氨基喹啉-5-偶氮-对苯磺酸钠(AQAPS)体系中产生一灵敏的阴极极化二次导数催化波,其峰电位在-1.33V(vs.SCE)。Cr(Ⅵ)在0.40～12.0ng/ml范围内与峰电流成正比。本法巳用于废水中Cr(Ⅵ)的测定,结果良好。A sensitive second derivative technique for the catalytic wave of Cr (Ⅵ ) in the NH_4OH-NH_4Cl-NaNO_4-AQAPS system was observed. The linear range of the calibration is 0.40-12.0 ng/m1. The peak potential is - 1.33 V(νs. SCE). The character of the catalytic wave and mechanism of the electrode processes are discussed.

关 键 词：铬 AQAPS 氨基喹啉 极谱波 

分 类 号：O626.323[理学—有机化学]