数字农科院2.0

Rapid And Sensitive Determination Of C.lenbuterol Residues In Animal U rine By Surface-Enhanced Raman Spectroscopy

文献类型： 外文期刊

作者： Cheng, J; Wang, S; Zhang, S; Wang, PL; Xie, JC; Han, CQ; Su, XO

作者机构：

关键词： Clenbuterol; Liquid-liquid extraction; Surface-enhanced Raman spectroscopy; Animal urine; Determination

期刊名称： SENSORS AND ACTUATORS B-CHEMICAL

ISSN： 0925-4005

年卷期： 2019 年 279 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： A rapid, selective, and quantitative method to determine clenbuterol content in animal urine based on Surface-Enhanced Raman Spectroscopy (SERS) by aggregated re-oxidized graphene oxide/Au nanoparticle (roGO/AuNPs) hybrids and liquid-liquid extraction has been proposed in this study. To realize the quantitative calculation, melamine was optimized as the internal standard. The peak intensity of melamine observed at Delta v = 709 cm(-1) was first set to 1000 as basis, and the peak at Delta v= 1474 cm(-1) was selected as the characteristic peak of clenbuterol used for the quantitative calculation. Sufficient linearity was obtained in the range of 1-20 ng mL(-1) (R-2 = 0.997). The limit of detection and quantification in urine matrix were as low as 0.5 and 1 ng mL(-1), respectively. The recovery rates were 78.6-89.4% with coefficients of variation less than 9.8%, and the storage time of the substrates is approximately 180 days under 4 degrees C. The detection results of the developed SERS detection method agree well with those determined by LC-MS/MS, while the cost time significantly reduced to 8 min/sample. This new protocol could be easily developed for the routine monitoring of the illicit use of clenbuterol in animal farming.

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