Self-supporting liquid film as reproducible SERS platform for therapeutic drug monitoring of berberine hydrochloride in human urine

Liu, Jing; Wen, Lu; Huang, Yuting; Zhao, Xin; Feng, Zhe; Wang, Dongmei; Gong, Zhengjun; Fan, Meikun

doi:10.1016/j.microc.2021.106122

Cited by 22 publications

(3 citation statements)

References 43 publications

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“…Various co-adsorbates have been explored in the SERS community to promote close contact between the substrate and the analytes, among which the halogen ions stood at the top of the list. − For example, explosives, miRNA, and Prion proteins have been detected with high sensitivity with the help of halogen ions. Tropane alkaloids and gelsemine have been used as probe molecules to investigate the mechanism by which halogen ions can enhance SERS performance.…”

Section: Introductionmentioning

confidence: 99%

Ameliorating SERS Sensitivity for Pesticide Malathion Detection with Synergistic Boosting Effect by Hydrogen Cations and Chloride Anions

Peng

Zheng

et al. 2022

Langmuir

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Although SERS has been widely recognized as one of the highly sensitive analytical methods that can be deployed in the field with high sensitivity and short analysis time, reports regarding the fast determination of malathion at low concentrations are still scarce. Here, in this work, the solution pH and various halogen co-adsorbates were explored to promote the SERS signal of malathion using the citratereduced Ag NPs. It was found that chloride anions were the most efficient signal booster among the three halogen ions screened. Further examination of the SERS profile of the malathion in the presence of different halogen species found that the stretching mode of the P−S bond shifted to a lower frequency with Cl − , which may imply closer (and stronger) binding of malathion to the Ag NPs. This concurs with literature reports that halogen ions could facilitate the adsorption of a certain analyte onto the SERS substrate. In addition, hydrogen ions showed a synergistic effect on SERS signal enhancement when combined with chloride anions. At optimum conditions, the malathion could be detected with a limit of detection (LOD) of 3 ppb. Malathion-spiked cherry tomatoes and oranges were analyzed, and the recovery rates were found to be within 85−100%.

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Section: Introductionmentioning

confidence: 99%

Ameliorating SERS Sensitivity for Pesticide Malathion Detection with Synergistic Boosting Effect by Hydrogen Cations and Chloride Anions

Peng

Zheng

et al. 2022

Langmuir

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“…Ag NPs were prepared according to previous report [ 29 , 37 ]. In brief, 0.017 g of AgNO 3 was dissolved in 100 mL ultrapure water and heated to boil.…”

Section: Methodsmentioning

confidence: 99%

Iodine-Modified Ag NPs for Highly Sensitive SERS Detection of Deltamethrin Residues on Surfaces

Peng

Xing

et al. 2023

Molecules

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It is essential to estimate the indoor pesticides/insecticides exposure risk since reports show that 80% of human exposure to pesticides occurs indoors. As one of the three major contamination sources, surface collected pesticides contributed significantly to this risk. Here, a highly sensitive liquid freestanding membrane (FSM) SERS method based on iodide modified silver nanoparticles (Ag NPs) was developed for quantitative detection of insecticide deltamethrin (DM) residues in solution phase samples and on surfaces with good accuracy and high sensitivity. The DM SERS spectrum from 500 to 2500 cm−1 resembled the normal Raman counterpart of solid DM. Similar bands at 563, 1000, 1165, 1207, 1735, and 2253 cm−1 were observed as in the literature. For the quantitative analysis, the strongest peak at 1000 cm−1 that was assigned to the stretching mode of the benzene ring and the deformation mode of C-C was selected. The peak intensity at 1000 cm−1 and the concentration of DM showed excellent linearity from 39 to 5000 ppb with a regression equation I = 649.428 + 1.327 C (correlation coefficient R2 = 0.991). The limit of detection (LOD) of the DM was found to be as low as 11 ppb. Statistical comparison between the proposed and the HPLC methods for the analysis of insecticide deltamethrin (DM) residues in solution phase samples showed no significant difference. DM residue analysis on the surface was mimicked by dropping DM pesticide on the glass surface. It is found that DM exhibited high residue levels up to one week after exposure. This proposed SERS method could find application in the household pesticide residues analysis.

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“…However, the high cost of reagents and the unsatisfactory detection speed are unavoidable problems. [4] Surface-enhanced Raman scattering (SERS) as a highly sensitive, nondestructive, and convenient sensing method [5][6][7] has been widely used in food safety, [8,9] biomedicine, [10][11][12] and environmental analysis. [13][14][15][16] In addition, the use of SERS to identify bacteria with complex biological components has also been reported.…”

Section: Introductionmentioning

confidence: 99%

Boosting bacteria differentiation efficiency with multidimensional surface‐enhanced Raman scattering: the example of Bacillus cereus

Zhu

Wang

et al. 2022

Luminescence

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Surface-enhanced Raman scattering (SERS) is a powerful tool for constructing biomolecular fingerprints, which play a vital role in differentiation of bacteria. Due to the rather subtle differences in the SERS spectra among different bacteria, artificial intelligence is usually adopted and enormous amounts of spectral data are required to improve the differentiation efficiency. However, in many cases, large volume data acquisition on bacteria is not only technical difficult but labour intensive. It is known

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Self-supporting liquid film as reproducible SERS platform for therapeutic drug monitoring of berberine hydrochloride in human urine

Cited by 22 publications

References 43 publications

Ameliorating SERS Sensitivity for Pesticide Malathion Detection with Synergistic Boosting Effect by Hydrogen Cations and Chloride Anions

Ameliorating SERS Sensitivity for Pesticide Malathion Detection with Synergistic Boosting Effect by Hydrogen Cations and Chloride Anions

Iodine-Modified Ag NPs for Highly Sensitive SERS Detection of Deltamethrin Residues on Surfaces

Boosting bacteria differentiation efficiency with multidimensional surface‐enhanced Raman scattering: the example of Bacillus cereus

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