Preparation of SiO2@ Au nanorod array as novel surface enhanced Raman substrate for trace pollutants detection*
Hou Meng-Jinga), Zhang Xiana), Cui Xiao-Yanga), Liu Cana), Li Zheng-Caob), Zhang Zheng-Junb)†
       
Raman spectrum of PCBs which is extracted from soil sample adsorbed on the SERS substrate whose Au depositing time is 120 s.