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sunburst8796

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±¾ÈË×î½üͶ¸åһƪ£¬Éó¸åÈËÓÐÈý¸ö£¬ÓÐÁ½¸öÉó¸åÈËÒâ¼û¶¼ºÜºÃ£¬ÌáÁËһЩ²»ÊÇÎÊÌâµÄÎÊÌ⣬ֻÓÐÒ»¸öÉó¸åÈ˺ÜÄѸ㣬°´ÕÕÒâ¼ûÐ޸ĺó£¬ÁíÁ½¸öÉó¸åÈËͬÒâ½ÓÊÜ£¬Õâ¸öÉó¸åÈËÈÔÈ»²»ÂúÒ⣬¶øÇÒ¼ÓÁ˸Ð̾ºÅ£¬¿É¼û»Ø´ðµÃ¶à²»ÂúÒ⣬¿ÉÊÇÎÊÌâʵÔÚºÜÈÃÈËÃԻ󣬺ÃÏñÊÇ˵ÎÒÕâ¸ö·ÖÎöÊÇ»ùÓÚinner filter effects£¬µ«²»ÄÜÓÃStern-Volmer equation·ÖÎö£¬ËûÈÏΪinner filter effectsµÄÌØ¶¨·ÖÎöÄ£ÐͲ»ÊÇÕâ¸ö£¬±¾È˶ÔÕâ¸öȷʵ²»Ì«¶®£¬ÓÐûÓиßÊÖÁ˽âinner filter effects¸ÃÓÃʲô·ÖÎö²Å׼ȷ£¬Íû¸ßÊÖÖ¸µã£¬Éó¸åÒâ¼ûÈçÏ£º
µÚÒ»´ÎµÄ¡°This paper presents a study about a sensor for catecholics based on a mechanism called by the authors as an external quenching. The authors analysed the called "external quenching" using a Stern-Volmer equation. This paper has a critical problem which is the interpretation of the mechanism of "quenching". Indeed, this mechanism is the well known fluorescence inner filter effects which have a specific model formulation. Analyzing the observed fluorescence intensity variation using a Stern-Volmer is probably not useful because there is no physical meaning.¡±
µÚ¶þ´ÎµÄ¡°The authors have made some improvements in the paper. However there is still a critical problem about the model that they used for the decreasing of fluorescence intensity linearization. Indeed, the Stern-Volmer model corresponds to a quenching mechanism and not to an inner-filter effect decreasing of fluorescence intensity. The application of a Stern-Vomer model in this paper is of empirical nature! For this last phenomenon there are several models in the literature that should be used.¡±
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sunburst8796

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6Â¥: Originally posted by flyxu at 2012-07-01 21:28:51
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wellyy2005

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sunburst8796: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£ÓаïÖú 2012-07-01 19:31:26
Inner Filter Effect

http://old.iupac.org/goldbook/I03047.pdf

The inner filter effect:

At low concentration the emission of light is uniform from the front to the back of sample cuvette. At high concentration more light is emitted from the front than the back. Since emitted light only from the middle of the cuvette is detected the concentration must be low to assure accurate FF measurements.

http://chemistry.rutgers.edu/grad/chem585/lecture2.html

Overcoming the Inner Filter Effect

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2211277/
2Â¥2012-07-01 19:18:01
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sunburst8796

ľ³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by wellyy2005 at 2012-07-01 19:18:01
Inner Filter Effect

http://old.iupac.org/goldbook/I03047.pdf

The inner filter effect:

At low concentration the emission of light is uniform from the front to the back of sample cuvette. At h ...

Thanks very much!
3Â¥2012-07-01 19:31:06
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liyingsong

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