表面增强拉曼光谱法检测人尿液、粪便中马来酸依那普利的浓度及其临床应用
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篇名: 表面增强拉曼光谱法检测人尿液、粪便中马来酸依那普利的浓度及其临床应用
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摘要: 目的:建立检测人尿液和粪便中马来酸依那普利浓度的方法,并将其应用于临床。方法:尿液和粪便样品经前处理后,与表面信号增强剂胶体银溶胶按1 ∶ 1(V/V)的比例混合,采用表面增强拉曼光谱法检测。激发功率为400 mW,激发波长为785 nm,分辨率为4.5 cm-1,用于定性的拉曼位移为(800±2)、(1 050±2)、(1 330±2)、(1 450±2)和(1 630±2)cm-1,用于定量的拉曼位移为(1 050±2)cm-1。结果:马来酸依那普利尿药、粪药浓度分别在0.50~100.00 μg/ml和2.00~100.00 μg/g范围内线性关系良好(r分别为0.989 3和0.978 0,n=6),定量下限分别为0.50 μg/ml和2.00 μg/g,检测限分别为0.10 μg/ml和1.30 μg/g;日内、日间RSD<5%,方法回收率分别为95.24%~99.38%、86.73%~94.57%,提取回收率分别为84.29%~90.43%(RSD=0.84%)、82.36%~87.70%(RSD=1.84%)。采用该法检测15例高血压患者马来酸依那普利的尿药浓度为15.31~33.46 μg/ml,粪药浓度为5.08~41.79 μg/g;疗效判定为“有效”的患者平均尿药、粪药浓度与“未见好转”的患者比较,差异均无统计学意义(P>0.05)。结论:表面增强拉曼光谱法用于人尿液和粪便中马来酸依那普利浓度的检测简便、快速。
ABSTRACT: OBJECTIVE: To establish the method for concentration determination of enalapril maleate in human urine and feces, and apply it in the clinic. METHODS: The urine and feces samples were collected and pre-processed, then tested by surface-enhanced Raman scattering spectrometry with ratio of sample to surface signal enhancer silver sol 1 ∶ 1(V/V). The assay was carried out with the following parameters: excitation power 400 mW, excitation wavelength 785 nm, resolution 4.5 cm-1. The characteristic shift of enalapril maleate were (800±2), (1 050±2), (1 330±2), (1 450±2), (1 630±2) cm-1. The quantitation shift was (1 050±2) cm-1. RESULTS: The linear range of enalapril maleate were 0.50-100.00 μg/ml in urine and 2.00-100.00 μg/g in feces(r=0.989 3, 0.978 0,n=6); the limits of quantitation were 0.50 μg/ml and 2.00 μg/g, and the limits of detection were 0.10 μg/ml and 1.30 μg/g. RSDs of intra-day and inter-day were both lower than 5%. The method recoveries were 95.24%-99.38% and 86.73%-94.57%; the extraction recoveries were 84.29%-90.43%(RSD=0.84%) and 82.36%-87.70%(RSD=1.84%), respectively. The urinal concentration of enalapril maleate in 15 hypertensive patients ranged 15.31-33.46 μg/ml, while the fecal concentration ranged 5.08-41.79 μg/g. There was no statistical significance in average urinal concentration and fecal concentration between “effective” patients and “no response” patients. CONCLUSIONS: Surface enhanced Raman scttering spectrometry can be used for the concentration determination of enalapril maleate in human urine and feces. It is simple and rapid.
期刊: 2016年第27卷第32期
作者: 甘盛,赖青鸟,韩婷,吴超权
AUTHORS: GAN Sheng,LAI Qingniao,HAN Ting,WU Chaoquan
关键字: 马来酸依那普利;尿液;粪便;表面增强剂;表面增强拉曼光谱法
KEYWORDS: Enalapril maleate; Urine; Feces; Surface signal enhancer; Surface-enhanced Raman scattering spectrometry
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