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
After samples treatment with microwave digestion,a fluorescence method for the determination of aluminium(Ⅲ) based on the system of aluminium(Ⅲ)-ciprofloxacin-SDS was developed.In NaAc-HAc medium,aluminium(Ⅲ) react...After samples treatment with microwave digestion,a fluorescence method for the determination of aluminium(Ⅲ) based on the system of aluminium(Ⅲ)-ciprofloxacin-SDS was developed.In NaAc-HAc medium,aluminium(Ⅲ) reacted with ciprofloxacin and SDS to form a complex with a strong fluorescence.The fluorescence excitation and emission maxima were at 365nm and 420nm,and the linear range was 2.0×10-7mol/L～2.0×10-5mol/L with the detection limit of 1.14×10-7 mol/L.This method was applied to the determination of trace aluminium(Ⅲ) in flour food samples with satisfactory results.展开更多
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.
文摘After samples treatment with microwave digestion,a fluorescence method for the determination of aluminium(Ⅲ) based on the system of aluminium(Ⅲ)-ciprofloxacin-SDS was developed.In NaAc-HAc medium,aluminium(Ⅲ) reacted with ciprofloxacin and SDS to form a complex with a strong fluorescence.The fluorescence excitation and emission maxima were at 365nm and 420nm,and the linear range was 2.0×10-7mol/L～2.0×10-5mol/L with the detection limit of 1.14×10-7 mol/L.This method was applied to the determination of trace aluminium(Ⅲ) in flour food samples with satisfactory results.
