A reverse flow injection chemiluminescence(CL) method for the determination of urapidil was firstly described. It was found that the CL intensity from the Luminol ClO - system could be enhanced in the presence of urap...A reverse flow injection chemiluminescence(CL) method for the determination of urapidil was firstly described. It was found that the CL intensity from the Luminol ClO - system could be enhanced in the presence of urapidil. The increase of CL emission was correlated with urapidil mass concentration in the range from 0.2 to 100 μg/mL, the detection limit was 0.01 μg/mL and the relative standard deviation was 1.3%( ρ =4 μg/mL, n =11), a sampling frequency of 150 h -1 was attained. The method was applied to the determination of leucoge in pharmaceutical preparations with recovery of 101.0% and 101.3% .展开更多
文摘A reverse flow injection chemiluminescence(CL) method for the determination of urapidil was firstly described. It was found that the CL intensity from the Luminol ClO - system could be enhanced in the presence of urapidil. The increase of CL emission was correlated with urapidil mass concentration in the range from 0.2 to 100 μg/mL, the detection limit was 0.01 μg/mL and the relative standard deviation was 1.3%( ρ =4 μg/mL, n =11), a sampling frequency of 150 h -1 was attained. The method was applied to the determination of leucoge in pharmaceutical preparations with recovery of 101.0% and 101.3% .
