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新显色剂p-NPAQ在吐温-80存在下,pH=10.0的NaHCO_3Na_2CO_3缓冲介质中与铜(Ⅱ)形成红色配合物,组成比为Cu(Ⅱ):pNPAQ=1:4.其最大吸收在614nm处,摩尔吸光系数为4.1×10~4L.mol~(-1).cm~(-1).铜(Ⅱ)量在0～11.6μg/10mL范围内服从比尔定律.
The new reagent p-NPAQ forms a red complex with copper (Ⅱ) in NaHCO 3 Na 2 CO 3 buffer solution with pH = 10.0 in the presence of Tween-80 with the composition ratio of Cu (Ⅱ): pNPAQ = 1: 4. The maximum absorption At 614 nm, the molar absorptivity was 4.1 × 10 ~ 4L.mol -1 cm -1 .The Beer’s law was obeyed in the range of 0 ~ 11.6μg / 10mL for copper (Ⅱ).