Chemiluminescent flow sensor for H2O2 based on the decomposition of H2O2 catalyzed by cobalt(II)-ethanolamine complex immobilized on resin
Chemiluminescent flow sensor for H2O2 based on the decomposition of H2O2 catalyzed by cobalt(II)-ethanolamine complex immobilized on resin
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DOI：
10.1016/s0003-2670(00)01181-8
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发表时间：
2001-01-01
影响因子：
6.2
通讯作者：
Yamada, M
中科院分区：
文献类型：
--
作者：
Hanaoka, S;Lin, JM;Yamada, M
用化学发光法研究了过渡金属离子催化H_2O_2分解反应。采用Dowex-50 W树脂固载的Co（II）-单乙醇胺络合物作为催化剂，研究了H_2O_2的快速分解。采用间歇法将固定化树脂与H_2O_2溶液混合后，出现很弱的化学发光。当在该体系中加入适量中性鲁米诺溶液时，可得到明亮的化学发光。这种异质CL系统被开发为H2 O2流量传感器。使用Dowex 50 W-X4-Co-单乙醇胺作为催化剂，H2 O2的检测限为1 × 10 - 7 M（S/N = 3）。该流量传感器具有寿命长、选择性高、在中性溶液中稳定性好等特点。该方法用于雨水样品中H_2O_2的测定，结果令人满意。(C)2001 Elsevier Science B. V.保留所有权利。
The decomposition of H2O2 catalyzed by transition metal ion has been investigated by chemiluminescence (CL). Using a heterogeneous catalyst, Co(II)-monoethanolamine complex immobilized on Dowex-50W resin, the rapid decomposition of H2O2 was observed. A very weak CL appeared during the H2O2 solution mixed with the immobilized resin by batch method. When appropriate amount of neutral luminol solution was added into the heterogeneous system, a bright CL emission was recorded. This heterogeneous CL system was developed as a H2O2 flow sensor. Detection limit of H2O2 using Dowex 50W-X4-Co-monoethanolamine as catalyst is 1 x 10(-7) M (S/N = 3). The flow sensor is of long lifetime, highly selective and very stable in the neutral solution. The application of the proposed method to determine H2O2 in rainwater samples without any special pre-treatment gives out a satisfactory result. (C) 2001 Elsevier Science B.V. All rights reserved.