化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2014年
8期
1291-1294
,共4页
芦丁%CdS%纳米荧光探针%荧光分光光度法
蘆丁%CdS%納米熒光探針%熒光分光光度法
호정%CdS%납미형광탐침%형광분광광도법
rutin%cds%nano-fluorecent probe%fluorescence
建立了以L-Cys-CdS纳米荧光探针测定芦丁含量的荧光分析方法。以L-半胱氨酸为稳定剂,在水溶液中合成了CdS纳米荧光探针,其粒径约为20nm。芦丁对CdS纳米荧光探针有荧光猝灭作用,且其紫外光谱图与变温实验表明其为静态猝灭。考察了酸度、反应时间、干扰物质对该方法的影响。在体系pH为10.5时,该方法的线性范围为2.004~48.096μg·mL-1,r=0.9992,检出限为0.672μg·mL-1,精密度为1.2%。该方法已成功用于复方芦丁片中芦丁的含量测定,与中国药典中的标准方法比较,结果满意。该方法简便,快捷,可用于芦丁含量的测定。
建立瞭以L-Cys-CdS納米熒光探針測定蘆丁含量的熒光分析方法。以L-半胱氨痠為穩定劑,在水溶液中閤成瞭CdS納米熒光探針,其粒徑約為20nm。蘆丁對CdS納米熒光探針有熒光猝滅作用,且其紫外光譜圖與變溫實驗錶明其為靜態猝滅。攷察瞭痠度、反應時間、榦擾物質對該方法的影響。在體繫pH為10.5時,該方法的線性範圍為2.004~48.096μg·mL-1,r=0.9992,檢齣限為0.672μg·mL-1,精密度為1.2%。該方法已成功用于複方蘆丁片中蘆丁的含量測定,與中國藥典中的標準方法比較,結果滿意。該方法簡便,快捷,可用于蘆丁含量的測定。
건립료이L-Cys-CdS납미형광탐침측정호정함량적형광분석방법。이L-반광안산위은정제,재수용액중합성료CdS납미형광탐침,기립경약위20nm。호정대CdS납미형광탐침유형광졸멸작용,차기자외광보도여변온실험표명기위정태졸멸。고찰료산도、반응시간、간우물질대해방법적영향。재체계pH위10.5시,해방법적선성범위위2.004~48.096μg·mL-1,r=0.9992,검출한위0.672μg·mL-1,정밀도위1.2%。해방법이성공용우복방호정편중호정적함량측정,여중국약전중적표준방법비교,결과만의。해방법간편,쾌첩,가용우호정함량적측정。
Determination of rutin content by fluorometry was carried out. In this experiment,the Cds nano-fluorescent probe was pre-pared using L-Cys as stabilizer in aqueous solution. Its particle size is about 20 nm. Based on the decrease of fluorescence intensity after L-Cys-CdS reacted with rutin,a new method for the determination of rutin was established. The uv spectra and variable temper-ature experiment showed that the quenching process was static. Some experiment influencing factors were studied such as acidity,re-action time,and interfering substance. The results showed that the fluorescence intensity of system with pH 10. 5 had a good linear relationship with the concentration of rutin in the range of 2. 004~48. 096μg·mL-1(r=0. 9992). The detection limit was 0. 672μg ·mL-1 and the precision was 1. 2%. The method has been applied to the determination of rutin in compound rutin tablets,and com-pared with the standard method( HPLC) ,the results were satisfactory. The method presented here is simple,rapid and can be used for the determination of rutin.