|Highly Sensitive SERS Detection of As(3+) Ions in Aqueous Media using Glutathione Functionalized Silver Nanoparticles|
; Chen, LX
; Lou, TT
; Wang, YQ
|Source Publication||ACS APPLIED MATERIALS & INTERFACES
|Contribution Rank||[Li, Jinglian; Chen, Lingxin; Lou, Tingting; Wang, Yunqing] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Li, Jinglian; Lou, Tingting] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
|Abstract||A highly sensitive surface-enhanced Raman scattering (SERS) platform for the selective trace analysis of As(3+) ions was reported based on glutathione (GSH)/4-mercaptopyridine (4-MPY)-modified silver nanoparticles (AgNPs). Here, GSH conjugated on the surface of AgNPs for specifical binding with As(3+) ions in aqueous solution through As-O linkage and 4-MPY was used as a Raman reporter. When As(3+) ions were added to the system, the binding of As(3+) with GSH resulted in the aggregation of AgNPs, and excellent Raman signal of 4-MPY reporters was obtained which can reflect the concentration of As(3+) indirectly. Under optimal assay conditions, the limit of detection (LOD) was estimated to be as low as 0.76 ppb, which is lower than the WHO defined limit (10 ppb), and an excellent linear range of 4-300 ppb was obtained. The practical application had been carried out for determination of As(3+) in real water samples.|
|Corresponding Author||Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
Surface-enhanced Raman Scattering
Atomic Fluorescence Spectrometry
|Subject Area||Science & Technology - Other Topics
; Materials Science
|Funding Organization||National Natural Science Foundation of China; Chinese Academy of Sciences[KZCX2-EW-206]; Department of Science and Technology of Shandong Province of China[2008GG20005005]
Li, JL,Chen, LX,Lou, TT,et al. Highly Sensitive SERS Detection of As(3+) Ions in Aqueous Media using Glutathione Functionalized Silver Nanoparticles[J]. ACS APPLIED MATERIALS & INTERFACES,2011,3(10):3936-3941.
Li, JL,Chen, LX,Lou, TT,&Wang, YQ.(2011).Highly Sensitive SERS Detection of As(3+) Ions in Aqueous Media using Glutathione Functionalized Silver Nanoparticles.ACS APPLIED MATERIALS & INTERFACES,3(10),3936-3941.
Li, JL,et al."Highly Sensitive SERS Detection of As(3+) Ions in Aqueous Media using Glutathione Functionalized Silver Nanoparticles".ACS APPLIED MATERIALS & INTERFACES 3.10(2011):3936-3941.
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