Copper Sensor for Unattended Marine Operations IV: Exploration of a Dip Probe Approach Using Nafion 117 Membranes

摘要

This study has shown that: (1) the use of the chemical procedure using BCS (the Standard Method) affords both a total copper and copper: (1) analysis; (2) BCP can be imbedded in Nafion 117 by both small batch laboratory procedures and small scale-up using commercial equipment with very similar results; (3) the chemical procedures for analysis are robust and reproducible; and (4) there is a knowledge base for continuing and expanding the copper (1) studies particularly in the area of response time and color intensity. The robustness and sensitivity of the membranes has been shown for a wide range of temperatures, salinities, pHs, and ligands. This robustness and sensitivity has also been shown for membranes that have been stored in various preservative solutions. The ability to maintain membranes in an operational state for long periods of time bodes well for the possible pre-packaging of membrane dip probes for off-the-shelf use.