title: [Determination of the concentration of ropivacaine in dog plasma by reversed-phase high performance liquid chromatography].
abstract: OBJECTIVE
  To establish a Reversed-Phase high performance liquid chromatography method for determination of plasma ropivacaine in dog.
  
  
  METHODS
  The concentration of ropivacaine was assayed on Intertsil C18 column (4.6 mm x 250 mm, 5 microm)with a mobile phase consisting of methanol: H2O (50:50), the detection wavelength was 215nm and the flow rate was 1.4 ml/min. the column temperature was 20 degrees C and the sensitivity was 0.02 AUFS respectively. the volume of sample for detection is 10 microl.
  
  
  RESULTS
  the linear range was 0.1-25 microg/ml (r = 0.9982). The recovery of ropivacaine was 91.2%-93.6%, RSD were 2.10%-3.40% (n=6). The detection limit was 0.05 microg/ml. the intra-day and interday precisions of assay for ropivacaine was 1.35%-2.88% and 1.80%-3.76%.
  
  
  CONCLUSIONS
  This method is simple, rapid, accurate and convenient for determination of the concentration of ropivacaine in dog plasma.
authors.affiliation: Department of Anesthesiology, Peking Union Medical College Hospital, Beijing 100730, China.
authors.forename: Xi-chen
authors.initials: XC
authors.lastname: Dong
authors.forename: Zhao-hui
authors.initials: ZH
authors.lastname: Fu
authors.forename: Wen-zhong
authors.initials: WZ
authors.lastname: Zhang
authors.forename: Yu-guang
authors.initials: YG
authors.lastname: Huang
mesh_terms: D000577:Amides / Q000097:blood*; D000779:Anesthetics, Local / Q000097:blood*; D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004285:Dogs; D000077212:Ropivacaine; D012680:Sensitivity and Specificity
chemical_list: D000577:Amides; D000779:Anesthetics, Local; D000077212:Ropivacaine