Category : Spectroscopy, colorimetry, photometry, fluometry > Analyzers

PRINT

BACK

The 224nm detector was installed in the PACE MDQ using the Flowgene Detector cell, the software and the acquisition card developed by Photon Systems with the UV laser. As the laser is chopped and the data acquisition is synchronized using a gated box car integration system with each laser pulse.

PHOTO Right : FLOWGENE 224 nm LIF DETECTOR
Step pressured injections of different products were used to optimize the different parameters of the laser and of the acquisition card.

To avoid the capillary emission, we use a 335,1 nm band pass filter (width : 36,2 nm). It was the best filter we had to perform the measurements but not the best filter for this application: a complete spectroscopic study of the different emissions will be done to optimize this filter to separate the emission of the solution from the background, essentially due to the emission of the capillary and to the emission of the gel for certain products. We observe an intrinsic emission of different gels which has saturated completely the acquisition system and hidden the real emission of solutions.

The laser power is set to a few mW and the acquisition rate is limited at 3 Hz, this limitation is due to the software, the laser potentially works at 10 Hz. For future work we would recommend using this variable data rate to enhance detection detail while insuring optimum lifetime of the laser system.

List of all articles from this supplier

- UV Fluorimeter
- Targeted Ultraviolet Chemical Sensor
- Lasers and LED sources
- Digital Detector Controllers

List of all articles from this supplier

List of articles in this sub-category

List of all articles in this sub-category Analyzers

List of all articles in this sub-categoryList of all articles in this sub-categoryList of all articles in this sub-category