title: [Determination of trace cobalt in human urine by graphite furnace atomic absorption spectrometr].
abstract: OBJECTIVE
  To establish a method to determine cobalt in human urine by graphite furnace atomic absorption spectrometry.
  
  
  METHODS
  Urine with 2% nitric acid diluted two-fold, to quantify the curve, graphite furnace atomic absorption spectrometric detection.
  
  
  RESULTS
  Co was linear within 2.5~40.0 ng/ml with r>0.999. Spike experiment showed that Co received good recovery rate, which was 90.8%~94.8%. Intra-assay precisions were 3.2%~5.1% for Co, inter-assay precisions were 4.4%~5.2% for Co.
  
  
  CONCLUSIONS
  The method by using graphite furnace atomic absorption spectrometr to determine urine Co was fast, accurate and with low matrix effect. It could meet the requirement in GBZ/T 210.5-2008.
authors: Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
authors: L X
authors: LX
authors: Zhong
authors: B M
authors: BM
authors: Ding
authors: D
authors: D
authors: Jiang
authors: D Y
authors: DY
authors: Liu
authors: B
authors: B
authors: Yu
authors: B L
authors: BL
authors: Zhu
authors: L
authors: L
authors: Ding
mesh_terms: D003035:Cobalt; D006108:Graphite; D006801:Humans; D017942:Nitric Acid; D013054:Spectrophotometry, Atomic
chemical_list: D003035:Cobalt; D017942:Nitric Acid; D006108:Graphite