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Updated: Jun 28, 2026

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
Published on: December 15, 2015
A multi-channel photometric detector for multi-component analysis in flow injection analysis
1Center for Process Analytzcal Chemistry Department of Chemistry Central South Universily of Technology Hunan Changsha 410083 China.
Abstract:
The detector, a multi-channel photometric detector, described in this paper was developed using multi-wavelength LEDs (light emitting diode) and phototransistors for absorbance measurement controlled by an Intel 8031 8-bit single chip microcomputer. Up to four flow cells can be attached to the detector. The LEDs and phototransistors are both inexpensive, and reliable. The results given by the detector for simultaneous determination of trace amounts of cobalt and cadmium in zinc sulphate electrolyte are reported. Because of the newly developed detector, this approach employs much less hardware apparatus than by employing conventional photometric detectors.
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