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sltmac: 金币+1 2012-05-21 16:39:32
李少博: 金币+20, 翻译EPI+1, ★★★很有帮助 2012-05-23 09:50:33
爱与雨下: 翻译EPI-1 2012-05-24 21:40:18
Thioglycolic acid in aqueous solution stabilizer synthesis of CdSe quantum dots and quantum dots as fluorescence probe Ⅰ, Sudan Red (Sudan I)-based quantum dot fluorescence enhancement effect, the establishment of a simple, rapid, sensitive Determination of Sudan I analysis methods. Investigated a variety of factors measured on Sudan I, the results show that in 0.01mol / L, pH = 7.6 of Na2HPO4-of NaH2PO4
Buffer solution, the concentration of quantum dots of 2.4 × 10-5mol / L, reaction time 20 min, the relative fluorescence intensity of the system and the Sudan the I concentration showed good linearity, the linear range of 3 × 10-7mol / L-8 × 10-6mol / L, the correlation coefficient is 0.9986, the detection limit of 1 × 10 (-7) mol / L,. The method has been successfully applied to actual samples of chili powder in the Sudan I determination of the relative standard deviation was 0.79% -3.44%, the recovery was 94.11% -104.86%.
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