A Multi-Channel Photometric Detector for Multi-Component Analysis
Author Information
Author(s): Aimin Tan, Jialin Huang, Liudi Geng, Jinhua Xu, Xinna Zhao
Primary Institution: Center for Process Analytical Chemistry, Department of Chemistry, Central South University of Technology, Changsha, Hunan, China
Hypothesis
The new photometric detector can simultaneously measure trace amounts of cobalt and cadmium in a more efficient manner than traditional methods.
Conclusion
The new detector provides accurate and precise measurements of cobalt and cadmium in zinc sulphate solutions using significantly less hardware.
Supporting Evidence
- The new detector requires only one peristaltic pump and one injection valve for simultaneous analysis.
- The accuracy and precision of the new detector meet the requirements for plant analysis.
- Results from the new detector were comparable to traditional methods.
Takeaway
This study shows a new device that can quickly check for two metals in a solution at the same time, making it easier and cheaper to use than older methods.
Methodology
The detector uses multi-wavelength LEDs and phototransistors controlled by a microcomputer to measure absorbance in multiple flow cells.
Limitations
Calibration for each wavelength is necessary, and the sensitivity of the photodetector may vary with different wavelengths.
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