Photometric system for continuous flow analysis
2003
Development of a Photometric System for Continuous Flow Analysis
Sample size: 10
publication
Evidence: moderate
Author Information
Author(s): S. S. Randhawa, Baban K. S. Bansod, Anirudh K. Singh, G. Chand, A. K. Ganju
Primary Institution: Central Scientific Instruments Organisation
Conclusion
The flow type photometric system is low cost, portable, and suitable for long-term operations in various fields.
Supporting Evidence
- The system showed good photometric linearity and precision.
- Maximum mean absorbance was recorded at 0.201 a.u. during the 30-40 min time slice.
- The overall drift of the instrument was found to be 0.018 a.u. h1.
- The developed instrument had a maximum coefficient of variation of 1.25% in the 2.5% cobalt chloride solution.
Takeaway
This study created a new, cheaper way to measure light absorption in liquids, which can be used in places without fancy labs.
Methodology
The study involved developing a photometric system using a tungsten lamp, photodiode, and microcontroller to analyze absorbance in continuous flow.
Limitations
The absorbances measured were slightly lower than expected, possibly due to filter wavelength issues.
Digital Object Identifier (DOI)
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