Semi-quantification of surface-enhanced Raman scattering using a handheld Raman spectrometer: a feasibility study

The Analyst ◽  
2013 ◽  
Vol 138 (23) ◽  
pp. 7075 ◽  
Author(s):  
Jinkai Zheng ◽  
Shintaro Pang ◽  
Theodore P. Labuza ◽  
Lili He
2020 ◽  
Vol 853 ◽  
pp. 102-106
Author(s):  
Wipawanee Leung ◽  
Saksorn Limwichean ◽  
Noppadon Nuntawong ◽  
Pitak Eiamchai ◽  
Sukon Kalasung ◽  
...  

Cypermethrin is a toxic pesticide in the pyrethroid group. A Surface Enhanced Raman Scattering (SERS) based sensor has been developed to achieve simple pesticide sensing. In this work, rapid detection of cypermethrin by using the handheld Raman spectroscopy coupled with SERS substrate was demonstrated. SERS-active silver nanorods substrate was used to enhance Raman signals of test samples. The effect of exposure time and drop volume of sample was studied for cypermethrin measurement. The results found that the silver nanorods substrate can be used to measure cypermethrin in the range of 10-6 to 10-3 M with a handheld Raman spectrometer. Furthermore, the Raman signal of cypermethrin was confirmed by measuring solid cypermethrin with the standard Raman spectrometer. SERS substrate was competent to detect cypermethrin with a limit of detection (LOD) of 10-6 M.


The Analyst ◽  
2015 ◽  
Vol 140 (13) ◽  
pp. 4399-4406 ◽  
Author(s):  
Samuel Mabbott ◽  
Omar Alharbi ◽  
Kate Groves ◽  
Royston Goodacre

Surface enhanced Raman scattering together with a portable Raman spectrometer is utilised as an analytical tool for the detection of ‘legal high’ MDAI contained in solution at low levels.


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