2 research outputs found
A multi-channel photometric detector for multi-component analysis in flow injection analysis
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