数字农科院2.0

Determination Of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin Based On Sers Substrates Composited Of Au Nanoparticles Supported On Twice-Oxidized Graphene Oxide

文献类型： 外文期刊

作者： Cheng, J; Fan, MD; Wang, PL; Su, XO

作者机构：

关键词： 2; 3; 7; 8-Tcdd; Surface-Enhanced Raman Spectroscopy; Au Nanoparticles; Twice-Oxidized; Graphene Oxide; Composited Substrates; Milk Analysis

期刊名称： MICROCHIMICA ACTA

ISSN： 0026-3672

年卷期： 2020 年 187 卷 5 期

页码：

收录情况： JCR（2021版）

摘要： A surface-enhanced Raman spectroscopy (SERS) substrate consisting of Au nanoparticles supported on twice-oxidized graphene oxide (ro-GO) for the determination of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) was prepared. The Raman shift at ov = 779, 993, and 1203 cm(-1) was collected on the excitation condition of lambda = 785 nm for the qualitative identification of 2,3,7,8-TCDD in milk. The peak at ov = 1203 cm(-1) was selected as the characteristic peak for quantitation. The quantitation calculation was realized in the concentration range 10 to 100 ng mL(-1) with a limit of detection of 3.24 ng mL(-1) in milk samples. The average recoveries of 2,3,7,8-TCDD in milk were 60.6-68.6% with relative standard deviations less than 6.4%. The long-term stability of the substrates was approximately 180 days at 4 degrees C. Further, the SERS method for the determination of 2,3,7,8-TCDD in milk samples based on the optimized hybrid SERS substrate and corresponding pre-treatment procedure is proposed. Schematic representation of surface-enhanced Raman spectroscopy (SERS) determination of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) in milk samples by Au nanoparticles supported on twice-oxidized graphene oxide (ro-GO/AuNP) as a substrate.

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