title: [High-performance capillary electrophoresis for determination of urinary citrate and oxalate].
abstract: OBJECTIVE
  To develop a method for determining urinary citrate and oxalate using high-performance capillary electrophoresis.
  
  
  METHODS
  Capillary electrophoresis with indirect ultraviolet (UV) detection was performed for determining urinary citrate and oxalate. Sodium hromate was used as the UV-absorbing background electrolyte.
  
  
  RESULTS
  Citrate and oxalate had a migration time of 3.76 min and 3.14 min respectively. The calibration curves were linear within a limit of about 2 microg/ml for citrate and about 1 microg/ml for oxalate. The recovery rates of citrate and oxalate were 97.53% and 99.11% respectively.
  
  
  CONCLUSIONS
  This method is simple, accurate and at low cost for determining citrate and oxalate in the urine.
authors.affiliation: Central Laboratory, First Military Medical University, Guangzhou 510515, China.
authors.forename: Qi-zhi
authors.initials: QZ
authors.lastname: Luo
authors.forename: Kai-jin
authors.initials: KJ
authors.lastname: Dai
authors.forename: An-de
authors.initials: AD
authors.lastname: Ma
authors.forename: Jun-ling
authors.initials: JL
authors.lastname: Zhou
mesh_terms: D019343:Citric Acid / Q000652:urine*; D019075:Electrophoresis, Capillary; D006801:Humans; D010070:Oxalates / Q000652:urine*
chemical_list: D010070:Oxalates; D019343:Citric Acid