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• W2948573448 abstract "The illegal adulteration of sildenafil in herbal food supplements and alcoholic drinks immensely threatens human health due to its harmful side-effects. Therefore, it is important to accurately detect and identify the presence of sildenafil in alcoholic drinks. In this study, Opto Trace Raman 202 (OTR 202) was used as surface enhanced Raman spectroscopy (SERS) active colloids to detect sildenafil. The results demonstrated that the Raman enhancement factor (EF) of OTR 202 colloids reached 1.84 × 107 and the limits of detection (LODs) of sildenafil in health wine and liquor were found to be as low as 0.1 mg/L. Moreover, the SERS peaks of 645, 814, 1235, 1401, 1530 and 1584 cm-1 could be qualitatively determined as sildenafil characteristic peaks and the relationship between Raman peak intensity and sildenafil concentration in health wine and liquor were different. There was a good linear correlation between Raman peak intensity, and sildenafil concentration in health wine ranged 0.1-1 mg/L (0.9687< R2 < 0.9891) and 1-10 mg/L (0.9701 < R2 < 0.9840), and in liquor ranged 0.1-1 mg/L (0.9662 < R2 < 0.9944) and 1-20 mg/L (0.9625 < R2 < 0.9922). The relative standard deviations (RSD) were less than 5.90% (sildenafil in health wine) and 9.16% (sildenafil in liquor). The recovery ranged 88.92-104.42% (sildenafil in health wine) and 90.09-104.55% (sildenafil in liquor). In general, the sildenafil in health wine and liquor could be rapidly and quantitatively determined using SERS technique, which offered a simple and accurate alternative for the determination of sildenafil in alcoholic drinks." @default.
• W2948573448 created "2019-06-14" @default.
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• W2948573448 date "2019-06-03" @default.
• W2948573448 modified "2023-10-11" @default.
• W2948573448 title "Analysis of Sildenafil in Liquor and Health Wine Using Surface Enhanced Raman Spectroscopy" @default.
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• W2948573448 doi "https://doi.org/10.3390/ijms20112722" @default.
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