A new reagent, 1-(N-methylpyridinium-4-yl-azo)-4-(4-diethylaminophenylazo)naphthalene iodide, can react with sodium 4-dodecylbenzenesulfonate to show a color change in an aqueous phase in the presence of iodide ion. The calibration graph is straight line up to 1.2×10−5 M (1 M=1 mol dm−3); ε=3.25×104 1 mol−1 cm−1 at 580 nm.
一种新试剂 1-(N-
甲基吡啶鎓-4-基偶氮)-4-(4-
二乙基氨基苯基偶氮)
萘碘化物能与
4-十二烷基苯磺酸钠反应,在有
碘离子存在的
水相中显示颜色变化。校准图在 1.2×10-5 M(1 M=1 mol dm-3)以下为直线;ε=3.25×104 1 mol-1 cm-1,波长 580 nm。