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The sensitivity, specificity and versatility of optical methods for chemical determinations have turned spectroscopy into one of the most popular techniques for environmental analysis and process control [1, 2]. In most cases, however, the very same attractive features have led (so far) to expensive instrumentation and/or complex methods compared to, for instance, the well-established electrochemical...
It has been recognized since the pioneering times of fiber-optic sensing development that the best indicator dye is worth nothing without a (polymer) support fitted to both the determinand species and the indicator itself. However, the task of selecting an organic or inorganic polymer for manufacturing a sensitive head among the myriad of materials available nowadays may seem daunting to the researcher...
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