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本文研制了一种新型的由强碱性阴离子交换树脂(OH形式),转换成N-(β-羧基丙酰基)异鲁米诺(简称CPIL)化学发光形式的阴离子交换树脂.试液中的阴离子将树脂上的发光剂阴离子(CPIL)交换出来与H_2O_2-Fe(CN)_6~(3-)反应,产生化学发光,化学发光的强度与试液中的阴离子浓度成正比.由此建立的流动注射化学发光离子交换测定技术,应用于Cl~-,Br~-,NO_2~-,NO_3~-,SO_4~(2-)等阴离子的测定,对不同的阴离子检测限为8.0×10~(-7)mol·dm~(-3)～1.4×10~(-6)mol·dm~(-3),线性范围可达两个数量级(1×10~(-6)mol·dm~(-3)～1×10~(-4)mol·dm~(-3)).
In this paper, a new type of anion exchange resin which is converted from strong basic anion exchange resin (OH form) into N- (β-carboxypropionyl) isoprolone (CPIL) chemiluminescence is proposed. The anions exchange the luminescent agent anions (CPIL) on the resin and react with H 2 O 2 -Fe (CN) 6 ~ (3-) to produce chemiluminescence. The intensity of chemiluminescence is proportional to the concentration of anion in the test solution. Flow injection chemiluminescence ion exchange assay was applied to the determination of Cl ~ -, Br ~ -, NO_2 ~ -, NO_3 ~ -, SO_4 ~ (2-) and other anions. The detection limits of different anions were 8.0 × 10 ~ -7) mol · dm ~ (-3) ~ 1.4 × 10 ~ (-6) mol · dm ~ (-3), and the linear range was up to two orders of magnitude (1 × 10 ~ (-6) mol · dm ~ -3) ~1 × 10 ~ (-4) mol · dm ~ (-3)).