合成了水溶性双卟啉5,10,15-三(4-磺酸苯基)-20-[4-[3-[4-[10,15,20-三(4-磺酸苯基)-5-卟啉基]苯氧基]丙氧基]苯基]卟啉(简称 DTPPS_(?)),研究了它和铜(Ⅱ)的显色反应。结果表明,在吐温-60存在下,在 pH3.0～4.5介质中形成 Cu(Ⅱ):DTPPS_(?)=2:1的很稳定的配合物,其ε_(?)=3.52×10~5L·mol~(-1)·cm~(-1)。铜(Ⅱ)的浓度在0～1.2μg/10mL 范围内服从比耳定律。在掩蔽剂存在下选择性高。用以直接测定矿物和铝合金中的铜,结果满意。 Synthesis of water-soluble bis-porphyrin 5,10,15-tris (4-sulfophenyl) -20- [4- [3- [4- [10,15,20-tris (4-sulfophenyl) Porphyrinyl] phenoxy] propoxy] phenyl] porphyrin (abbreviated as DTPPS_ (?)) Was prepared and its color reaction with copper (II) was studied. The results showed that Cu (Ⅱ): DTPPS _ (2) = 2: 1 was stable in the presence of Tween-60 at pH 3.0 ~ 4.5. The ε_ (?) = 3.52 × 10 ~ 5L · mol ~ (-1) · cm ~ (-1). Beer’s law is obeyed in the range of 0 ~ 1.2μg / 10mL for copper (Ⅱ). High selectivity in the presence of masking agents. For direct determination of copper in minerals and aluminum alloys, the results are satisfactory.