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* Portable, low cost fluorometer using blue LED as excitation source and integrating photo detector as detection element | * Portable, low cost fluorometer using blue LED as excitation source and integrating photo detector as detection element | ||
* Sample can be thermal regulated using infrared heater and infrared thermometer | * Sample can be thermal regulated using infrared heater and infrared thermometer | ||
* Software only regulate temperature and changing integration settings, data | * Software only regulate temperature and changing integration settings, raw data output for further processing | ||
* Tested using FAM fluorescent dye | * Tested using FAM fluorescent dye | ||
* No comments about performance or accuracy of the fluorometer | * No comments about performance or accuracy of the fluorometer | ||
Revision as of 02:50, 8 May 2016
Articles Review
Hand-held thermal-regulating fluorometer [1]
- Portable, low cost fluorometer using blue LED as excitation source and integrating photo detector as detection element
- Sample can be thermal regulated using infrared heater and infrared thermometer
- Software only regulate temperature and changing integration settings, raw data output for further processing
- Tested using FAM fluorescent dye
- No comments about performance or accuracy of the fluorometer
Versatile portable fluorometer for time-resolved luminescence analysis [2]
- A portable, but not low cost, fluorometer for time resolved luminescence analysis
- Uses xenon flash lamp with filter as excitation source, and photo multiplier tube with filter as the detection device
- This device claimed to have better SNR by about 1 order of magnitude than state of the art commercial spectrometer at the time of the writing
- Intended to detect drugs such as tetracycline
- Could be used to test different compounds due to the multi wavelength light source
The SLIM Spectrometer [3]
- A portable, low cost colorimeter for remote data logging application
- Uses "flow cell" ? to allow for unattended sensing
- Uses multiple LED because the chemical under test can absorb broader wavelength
- Photo detector with integration and averaging method to detect intensity of light
- Suffer from non-linearity because of the combination between absorbance profile and LED spectrum
- Lost to commercial spectrometer in the aspect of wavelength resolution and noise
- Claimed could easily be changed to fluorometer just by making the detection angle 90 degree to the light source
References
- ↑ A. S. Farmer, D. P. Fries, W. Flannery, and J. Massini, "Hand-held thermal-regulating fluorometer", Review of Scientific Instruments 76(11) pp. 115102 (2005).
- ↑ G. Chen, "Versatile portable fluorometer for time-resolved luminescence analysis", Review of Scientific Instruments 76(6) pp. 63107 (2005).
- ↑ K. M. Cantrell and J. D. Ingle, "The SLIM Spectrometer", Anal. Chem. 75(1) pp. 27–35 (2003).