| Resonance Rayleigh scattering (RRS) spectrum is a sensitive and simple spectral technique which has been applied widely in the aspect of life, environmental sciences and the investigation of nanometer materials. However, it is rarely applied to the quantitative analysis of some trace inorganic elements in the environmental pollution using the intensity of resonance Rayleigh scattering enhanced by ion-associated nanoparticles and inorganic nanoparticles. Flow cytometry (FCM) was gained attention as a powerful high-throughput and multiparameter technology and it was applied widely in clinic medicine, but rarely applied in the chemcial study.In the aspect of ion-associated nanoparticles system, the common fluorescence spectrophotometer was used to determine Ag+ and Cd2+ in solution by using acidic triphenylmethane dyes (TPMD) including bromophenol blue (BPB), bromocresol green (BCG) or bromocresol purple (BCP) and PAN as the probes of the RRS respectively. In a phosphate buffer medium, when Ag+ reacts with 1,10-Phen-anthroline to form cation complex which further reacts with TPMD to form an ion-association complex, the RRS intensity is enhanced greatly. The intensity of RRS was directly proportional to the concentration of Ag+ in the range of 9.6×10-3 0.60(BPB), 4.5 X 10-31.00(BCG) and 2.4 X 10"30.40μg/mL(BCP) with the detection limits of 1.60(BPB), 1.34(BCG) and 0.72ng/mL(BCP). In the NH4Cl-NH3 .H2O buffer solution (pH8.50), the intensity of RRS of PAN was enhanced greatly by Cd2+ in the presence of polyvinyl alcohol. In the condition selected, the enhancement of RRS was linear to the concentration of Cd2+ ranging from 0.017-1.00 μg/mL with the detection limit of 5.30ng/mL.In the aspect of inorganic nanoparticles system, in the presence of TritonX-100,... |
PDF Full Text Request