title: Simultaneous detection of seven phenolic acids in Danshen injection using HPLC with ultraviolet detector.
abstract: A high-performance liquid chromatographic (HPLC) method with ultraviolet (UV) detector had been developed for simultaneous quantification of danshensu, protocatechuic aldehyde, caffeic acid, salvianolic acid D, rosmarinic acid, salvianolic acid B and salvianolic acid A in Danshen injection. According to the UV spectra of these components, three detection wavelengths have been selected as follows: 280 nm for danshensu and protocatechuic aldehyde, 326 nm for caffeic acid, salvianolic acid D and rosmarinic acid, 286 nm for salvianolic acid B and salvianolic acid A. The limit of detection (LOD) was improved to be in the range of 0.008-0.160 microg/ml. Moreover, excellent linear behavior over the investigated concentration range was observed, with R>0.999 for all the analytes.
authors.affiliation: Department of Chinese Medicine Science and Engineering, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
authors.forename: Jin-zhong
authors.initials: JZ
authors.lastname: Xu
authors.forename: Jie
authors.initials: J
authors.lastname: Shen
authors.forename: Yi-yu
authors.initials: YY
authors.lastname: Cheng
authors.forename: Hai-bin
authors.initials: HB
authors.lastname: Qu