Rapid and sensitive detection of sodium saccharin in soft drinks by silver nanorod array SERS substrates

Han, Caiqin; Yao, Yue; Wang, Wen; Qu, Lulu; Bradley, Layne; Sun, Shulin; Zhao, Yiping

doi:10.1016/j.snb.2017.05.051

Cited by 79 publications

(31 citation statements)

References 50 publications

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“…The Gaussian 03 software was used to optimize the geometry and calculate the Raman spectra of flumetsulam in this work. The molecular structure of flumetsulam was optimized using the B3LYP function with a 6-31G* basis set [ 54 , 55 ], and the theory Raman spectrum was further obtained.…”

Section: Methodsmentioning

confidence: 99%

Fast and Low-Cost Surface-Enhanced Raman Scattering (SERS) Method for On-Site Detection of Flumetsulam in Wheat

2020

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The pesticide residues in agri-foods are threatening people’s health. This study aims to establish a fast and low-cost surface-enhanced Raman scattering (SERS) method for the on-site detection of flumetsulam in wheat. The two-step modified concentrated gold nanoparticles (AuNPs) acted as the SERS substrate with the aid of NaCl and MgSO4. NaCl is served as the activator to modify AuNPs, while MgSO4 is served as the aggregating agent to form high-density hot spots. The activation and aggregation are two essential collaborative procedures to generate remarkable SERS enhancement and achieve the trace-level detection of flumetsulam. This method exhibits good enhancement effect with an enhancement factor of 106 and wide linear range (5–1000 μg/L). With simple pretreatment, the flumetsulam residue in real wheat samples can be successfully detected with the limit of detection (LOD) down to 0.01 μg/g, which is below the maximum residue limit of flumetsulam in wheat (0.05 μg/g) set in China. The recovery of flumetsulam residue in wheat ranges from 88.3% to 95.6%. These results demonstrate that the proposed SERS method is a powerful technique for the detection of flumetsulam in wheat, which implies the great application potential in the rapid detection of other pesticide residues in various agri-foods.

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Section: Methodsmentioning

confidence: 99%

Fast and Low-Cost Surface-Enhanced Raman Scattering (SERS) Method for On-Site Detection of Flumetsulam in Wheat

2020

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“…AgNR array substrates were fabricated by the OAD method in a custom‐built e‐beam deposition system (DE500, DE Technology Inc., Beijing, China). Detailed characterization of the enhancement factor, uniformity, and repeatability of the substrates has been reported previously . Briefly, glass slides were cut into 1 × 1 cm 2 square pieces and were sonicated in ethanol for 10 min, dried by high purity nitrogen.…”

Section: Experiments and Methodsmentioning

confidence: 99%

Rapid identification of gutter oil by detecting the capsaicin using surface enhanced Raman spectroscopy

Tian

Yao

et al. 2017

J Raman Spectroscopy

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Accurate determination of the gutter oil represents a major food safety challenge. Here, we propose to use the surface enhanced Raman spectroscopy (SERS) with silver nanorod array substrates to detect the capsaicin, a marker of the gutter oil that is difficult to remove. The capsaicin has several characteristic SERS peaks at Δv = 807 cm−1, Δv = 1, 264 cm−1, and so forth, which correspond to the C39‐C37‐C43 stretching vibrational mode at the alkyl chain, the ring stretching vibrational mode, and so forth, confirmed by our density functional theory calculation. This SERS‐based method enabled the rapid and highly sensitive detection of the gutter oil with minimum pretreatment. The concentration dependent SERS investigation shows that the SERS intensity of these characteristic peaks has a linear relationship with the capsaicin concentration when 1 mg/L < C < 60 mg/L. By combining a liquid phase extraction method and the SERS detection strategy, the capsaicin concentration as low as 30 mg/L can be detected from inoculated corn oil samples.

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“…Advantages of SERS, such as high sensitivity and easy operation have made it a powerful and promising technique for chemical detections in the field of food safety, such as beverages, pesticides, dairy production, and oil and so forth (Chen et al, 2015; Hou et al, 2016; Han et al, 2017; Roy et al, 2017; Jiang et al, 2018; Tian et al, 2018; Yao et al, 2018). For example, AgNRs substrate was employed for the rapid identification of gutter oil through capsaicin detection based on SERS (Tian et al, 2018).…”

Section: Applicationsmentioning

confidence: 99%

“…Characteristic bands of capsaicin (807 and 1,264 cm −1 ) were clearly observed in gutter oils which demonstrates the potential to quantify capsaicin in gutter oil. Han et al reported a detection limit of 0.3 mg/L for sodium saccharin by SERS (Han et al, 2017). They further employed SERS to detect the sodium saccharin in four soft drinks (sprite, cola, fanta, and schweppes) which were pre-extracted by ethyl acetate and obvious signals attributed to the sodium saccharin could be observed.…”

Section: Applicationsmentioning

confidence: 99%

Ag Nanorods-Based Surface-Enhanced Raman Scattering: Synthesis, Quantitative Analysis Strategies, and Applications

Zou

et al. 2019

Front. Chem.

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Surface-Enhanced Raman Scattering (SERS) is a powerful technology that provides abundant chemical fingerprint information with advantages of high sensitivity and time-saving. Advancements in SERS substrates fabrication allow Ag nanorods (AgNRs) possess superior sensitivity, high uniformity, and excellent reproducibility. To further promote AgNRs as a promising SERS substrate candidate to a broader application scope, oxides are integrated with AgNRs by virtue of their unique properties which endow the AgNRs-oxide hybrid with high stability and recyclability. Aside from SERS substrates fabrication, significant developments in quantitative analysis strategies offer enormous approaches to minimize influences resulted from variations of measuring conditions and to provide the reasonable data analysis. In this review, we discuss various fabrication approaches for AgNRs and AgNRs-oxide hybrids to achieve efficient SERS platforms. Then, we introduce three types of strategies which are commonly employed in chemical quantitative analysis to reach a reliable result. Further, we highlight SERS applications including food safety, environment safety, biosensing, and vapor sensing, demonstrating the potential of SERS as a powerful and promising technique. Finally, we conclude with the current challenges and future prospects toward efficient SERS manipulations for broader real-world applications.

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Rapid and sensitive detection of sodium saccharin in soft drinks by silver nanorod array SERS substrates

Cited by 79 publications

References 50 publications

Fast and Low-Cost Surface-Enhanced Raman Scattering (SERS) Method for On-Site Detection of Flumetsulam in Wheat

Fast and Low-Cost Surface-Enhanced Raman Scattering (SERS) Method for On-Site Detection of Flumetsulam in Wheat

Rapid identification of gutter oil by detecting the capsaicin using surface enhanced Raman spectroscopy

Ag Nanorods-Based Surface-Enhanced Raman Scattering: Synthesis, Quantitative Analysis Strategies, and Applications

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