Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
A novel strategy for rapid detection of bacteria in water by
the combination of three-dimensional surface-enhanced
Raman scattering (3D SERS) and laser induced breakdown
spectroscopy (LIBS)
Wenlong Liao, ‡a Qingyu Lin, ‡b Shicheng Xie, b Yi He, c Yonghui Tian,b Yixiang Duan a,b*
a School of Chemical Engineering, Sichuan University, Chengdu 610065, P.R.China
b Research Center of Analytical Instrumentation, Key Laboratory of Bio-resource and
Eco-environment, Ministry of Education, College of Life Sciences, Sichuan
University, Chengdu 610065, P.R.China
c Analytical & Testing Center, Sichuan University, Chengdu 610065, P.R.China
Fig. S1 The corresponding time evolution of Raman intensities of S.aureus (C) and E.coli
25922 (D) at 1356 and 1517 cm-1.
Fig.S2 The SERS spectra of four different bacterial species
Fig.S3 The SERS spectra of different concentrations of S.aureus.
Fig.S4 (A) Raman intensity of S.aureus at 1517 cm-1 vs. logarithm of the corresponding
concentration. (B) Linear fitting logarithm of Raman intensity of S.aureus at 1517 cm-1 vs.
concentration. Error bars represent the standard deviation of five independent measurements.
Fig. S5 (A) Photograph of the dried sample droplet after LIBS measurement, (B) SEM image of
the laser ablated crater in the dried sample droplet.
Fig. S6 Fitted peak areas vs. logarithm of the corresponding concentrations.