SAW Sensor for Chemical Warfare Agents. 3. Evaluation of Some Lanthanide Co-ordination Compounds as Chemical Interfaces Using the Nerve Agent Sarin (SAW Sensor voor Chemische Strijdmiddelen. 3 Een Evaluatie van Verschillende Lanthanidecomplexen als Chemis

摘要

Within the framework of the development of a SAW gas sensor for nerve agents,three lanthanide complexes were tested with sarin, dimethyl methyl phosphonate (DMMP) and some interferents. In some cases the responses were partly irreversible as a result of the catalytic effect of the chemical interface on reactions taking place at the sensor surface. The best suited lanthanide complexes yielded a detection limit of 0.7 ppm GB (3.5 mg cu. m) with an 80% response time of five minutes. The results are discussed in terms of strategies for designing suitable chemical interfaces for organophosphorus compounds.