في هذا الفيديو سوف نظهر قياس وحساب كمية المحصول ومطلق اللونية تنسق مباشرة في عينات من مسحوق باستخدام هيتاشي F-7000 الكم نظام قياس العائد.
Measurement of fluorescence quantum yield has become an important tool in the search for new solutions in the development, evaluation, quality control and research of illumination, AV equipment, organic EL material, films, filters and fluorescent probes for bio-industry.
Quantum yield is calculated as the ratio of the number of photons absorbed, to the number of photons emitted by a material. The higher the quantum yield, the better the efficiency of the fluorescent material.
For the measurements featured in this video, we will use the Hitachi F-7000 fluorescence spectrophotometer equipped with the Quantum Yield measuring accessory and Report Generator program. All the information provided applies to this system.
Measurement of quantum yield in powder samples is performed following these steps:
The Hitachi F-7000 Quantum Yield Measurement System offer advantages for this application, as follows:
During this video we will measure sodium salicylate in powder form which is known to have a quantum yield value of 0.4 to 0.5.
The authors have nothing to disclose.
Name of the reagent | Company | Catalogue number | Yorumlar |
Sodium salicylate powder | Wako | 191-03142 | Mol. weight 160.10 |