A simple and sensitive flow injection method is presented for the determination of histidine based on its enhancement of electrogenerated chemiluminescence (ECL) of luminol. After optimization of the experimental para...A simple and sensitive flow injection method is presented for the determination of histidine based on its enhancement of electrogenerated chemiluminescence (ECL) of luminol. After optimization of the experimental parameters, the working range for histidine was in 1.0 x 10-6 to 1.0 x 10 -3 mol/L with a detection limit (S/N = 3) of 0.56 mmol/L. The relative standard deviation was 1.6% for 11 measurements of 5 x 10 5 mol/L histidine solution. The proposed method has been successfully applied to the determination of histidine in real pharmaceutical preparation.展开更多
In this paper, studies on chemiluminescence (CL) systems with electrogenerated reagents, including BrO -, ClO -, Br_2, [Cu^(HIO_6)_2] 5- , H_2O_2, Mn 3+ , Co 3+ and Ag 2+ , are described. The analytical ...In this paper, studies on chemiluminescence (CL) systems with electrogenerated reagents, including BrO -, ClO -, Br_2, [Cu^(HIO_6)_2] 5- , H_2O_2, Mn 3+ , Co 3+ and Ag 2+ , are described. The analytical applications of the CL system with electrogenerated reagents are reviewed.展开更多
A novel chemiluminescence (CL) sensor for NH4+ combined with flow injection analysis is presented in this paper. It is based on the inhibition effect of NH4+ on the CL reaction between luminol, immobilized electrostat...A novel chemiluminescence (CL) sensor for NH4+ combined with flow injection analysis is presented in this paper. It is based on the inhibition effect of NH4+ on the CL reaction between luminol, immobilized electrostatically on an anion-exchange column, and hypochlorous acid electrogenerated on-line. The sensor responds linearly to NH4+ concentration in 1.0x10(-6)-4.0x10(-9) g/ml range. A complete analysis could be performed in 1 min. The system is stable for 200 determination.展开更多
A new flow injection electrogenerated chemiluminescence（ECL）method for the determination of pefloxacin was developed.The method is based on the sensitiving effect of pefloxacin on the weak ECL signal of electrochemi...A new flow injection electrogenerated chemiluminescence（ECL）method for the determination of pefloxacin was developed.The method is based on the sensitiving effect of pefloxacin on the weak ECL signal of electrochemical oxidation of luminol on the platinum flake electrode in the medium of 0.05mol/L Na2CO3-NaHCO3.This ECL response is in the range of 1.0×10-8～1.4×10-5g/ml pefloxacin with a detection limit of 8.0×10-9g/ml.The relative standard deviation is 2.5%.This method was used to determine pefloxacin in samples with satisfactory results.展开更多
文摘A simple and sensitive flow injection method is presented for the determination of histidine based on its enhancement of electrogenerated chemiluminescence (ECL) of luminol. After optimization of the experimental parameters, the working range for histidine was in 1.0 x 10-6 to 1.0 x 10 -3 mol/L with a detection limit (S/N = 3) of 0.56 mmol/L. The relative standard deviation was 1.6% for 11 measurements of 5 x 10 5 mol/L histidine solution. The proposed method has been successfully applied to the determination of histidine in real pharmaceutical preparation.
基金ProjectsupportedbytheNationalScienceFoundationofChina (No .2 0 175 0 3 9) ,YouthFoundationofHouYingdong (No .810 13 )andtheFoundationofStateKeyLaboratoryofChemo/BiosensingandChemometrics (No .2 0 0 2 17)
文摘In this paper, studies on chemiluminescence (CL) systems with electrogenerated reagents, including BrO -, ClO -, Br_2, [Cu^(HIO_6)_2] 5- , H_2O_2, Mn 3+ , Co 3+ and Ag 2+ , are described. The analytical applications of the CL system with electrogenerated reagents are reviewed.
文摘A novel chemiluminescence (CL) sensor for NH4+ combined with flow injection analysis is presented in this paper. It is based on the inhibition effect of NH4+ on the CL reaction between luminol, immobilized electrostatically on an anion-exchange column, and hypochlorous acid electrogenerated on-line. The sensor responds linearly to NH4+ concentration in 1.0x10(-6)-4.0x10(-9) g/ml range. A complete analysis could be performed in 1 min. The system is stable for 200 determination.
文摘A new flow injection electrogenerated chemiluminescence（ECL）method for the determination of pefloxacin was developed.The method is based on the sensitiving effect of pefloxacin on the weak ECL signal of electrochemical oxidation of luminol on the platinum flake electrode in the medium of 0.05mol/L Na2CO3-NaHCO3.This ECL response is in the range of 1.0×10-8～1.4×10-5g/ml pefloxacin with a detection limit of 8.0×10-9g/ml.The relative standard deviation is 2.5%.This method was used to determine pefloxacin in samples with satisfactory results.
