Fabrication and characterization of the stable Ag-Au-metal-organic-frameworks: An application for sensitive detection of thiabendazole

Construction of Reusable PMMA–Ag/g-C3N4/Ag Hybrid Substrates with Plasmonic-Enhanced Intrinsic Raman Signals for Quantitative SERS Detection and Green Degradation

“…After being corrected, the LOD values for TBZ and CA were evaluated to be 2.29 × 10 –6 and 6.76 × 10 –5 mg/mL according to an S/N ratio of 3, respectively. Such values are lower than the thresholds of TBZ (20 μg/mL) and CA (100 mg/kg) in national regulations. , Meanwhile, such quantitative and sensitive SERS detections of TBZ and CA were evaluated by comparing them with some previous reports. As illustrated in Tables and , this work gave out better values of R 2 and LODs than other investigations and it can be peculiarly applied to deeply processed foods by straightforward wiping.…”

“…Such values are lower than the thresholds of TBZ (20 μg/mL) and CA (100 mg/kg) in national regulations. 62,63 Meanwhile, such quantitative and sensitive SERS detections of 58 assembling gold nanorods 0.991 216 ng/mL 50−1000 ng/mL lemon juice SERS 59 Fe 3 O 4 @GO@Ag 0.962 40 ng/cm 2 4 ng/cm 2 −40 μg/cm 2 fruit peels SERS 61 Ag-Au-IP6-Mil-101(Fe) 0.986 50 ng/mL 1.5−75 ppm juice sample SERS 64 Au NBs−PDMS hybrid film 0.98 0.64 ng/mL 10 −4 −10 −9 g/mL cherry HPCL 65 hydroxyl TBZ and CA were evaluated by comparing them with some previous reports. As illustrated in Tables 1 and 2, this work gave out better values of R 2 and LODs than other investigations and it can be peculiarly applied to deeply processed foods by straightforward wiping.…”

Contrastive Study of In Situ Sensing and Swabbing Detection Based on SERS-Active Gold Nanobush–PDMS Hybrid Film

“…Then, the effective laser diameter was obtained to be 1.18 μm by utilizing the equation of D diamter = (λ/N A ) × 1.22 (λ: 532 nm, N A : 0.55). Correspondingly, N Raman of 6.77 × 10 9 was obtained according to the volume density (1.362 g/cm 3 ) and molecular weight (155.17 g/mol) of the 4NTP powder. N SERS was calculated to be 8.47 × 10 5 by the equation of N SERS = N A × A × δ (N A : Avogadro constant, A: the effective occupation area, δ: the mole amount of 4NTP molecules per cm 2 in a monolayer).…”

Recent Advances in Metal Organic Frameworks Based Surface Enhanced Raman Scattering Substrates: Synthesis and Applications

“…Combined with a portable Raman system, an LOD of 1.527 × 10 −1 µM was achieved for orange II. Moreover, composites of bimetallic Ag@Au NPs and MIL-101(Fe) were prepared by an in situ reduction method and applied for sensitive SERS detection of thiabendazole (TBZ) in juice [ 56 ]. The Ag@Au NPs modified MIL-101(Fe) exhibited reasonable stability and good SERS sensitivity and could selectively adsorb and enhance TBZ under the interference of methyl parathion, parathion, chlorpyrifos, and triazophos.…”