| 摘要 |
This invention relates to methods capable of measuring a large number of industrially relevant chemical compounds - the aliphatic organics. The invention employs an advanced electrochemical measurement in combination with enhanced information recovery techniques such as artificial neural networks (ANN). The resulting method achieves virtual separation (as opposed to physical separation in chromatography) and simultaneous measurement of individual aliphatic compounds in mixtures. The electrochemical determination suitably employs dual pulse staircase voltametry. In this, cleaning pulses as used in conventional pulsed amperometric detectiion (PAD) are followed by a stepwise increasing potential, and current is measured after each step. The resulting signal can be analysed by ANN to determine the individual compounds in the mixture. An actual example shows the determination of individual concentrations of ethanol, fructose and glucose in mixtures of those compounds. |
