Prestel H, Gahr A, Niessner R
Institute of Hydrochemistry, Technical University of Munich, Germany.
Fresenius J Anal Chem. 2000 Sep-Oct;368(2-3):182-91. doi: 10.1007/s002160000379.
In order to develop a fiber optical heavy metal ion detection system, the applicability of selected complexing agents with fluorescent properties has been studied. Beginning with the application of known chelators, like BTC-5N, Newport Green, neocuproine, and chromotropic acid, a sensor configuration has been found, which allows the detection of Cd2+, Ni2+, and Cu2+ well below the chemical parameter threshold values of the new Water Quality Directive 98/83/EU. The sensor itself uses a membrane separation of the chelator flow from the sample volume. The diffusion across the membrane limits the response time to about 15 to 20 min. Applications are seen in monitoring networks.
为了开发一种光纤重金属离子检测系统，已对所选具有荧光特性的络合剂的适用性进行了研究。从应用已知的螯合剂（如BTC-5N、纽波特绿、新铜试剂和变色酸）开始，已找到一种传感器配置，该配置能够检测到远低于欧盟新水质指令98/83/EU化学参数阈值的Cd2+、Ni2+和Cu2+。该传感器本身采用膜将螯合剂流与样品体积分离。跨膜扩散将响应时间限制在约15至20分钟。其应用见于监测网络。
