کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10561158 | 969764 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A sensitive method for the detection of catecholamine based on fluorescence quenching of CdSe nanocrystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A sensitive method for the detection of catecholamine based on fluorescence quenching of CdSe nanocrystals A sensitive method for the detection of catecholamine based on fluorescence quenching of CdSe nanocrystals](/preview/png/10561158.png)
چکیده انگلیسی
A sensitive method for the detection of catecholamine based on the fluorescence quenching of CdSe nanocrystals was developed. The sodium citrate-protected CdSe nanocrystals were synthesized in water solution. The fluorescence quenching of CdSe nanocrystals by dopamine, uric acid, ascorbic acid and catechol was studied; the results showed that all of these four kinds of compounds could quench the fluorescence of nanocrystals, and the quenching constant was 6.3 Ã 104, 2.57 Ã 103, 2.14 Ã 103 and 1.168 Ã 103, respectively. The order of sensitivity for the biosensor was: dopamine > lactic acid > ascorbic acid > catechol. This method shows good selectivity for dopamine, the detection limit reaches 5.8 Ã 10â8 M.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 67, Issue 5, 31 October 2005, Pages 979-983
Journal: Talanta - Volume 67, Issue 5, 31 October 2005, Pages 979-983
نویسندگان
Ying Ma, Cheng Yang, Nan Li, Xiurong Yang,