title: [Determination of meconium lead level of newborn by graphite furnace atomic absorption spectrometry].
abstract: To establish a method for the determination of lead in meconium from 144 samples of newborn through nitric acid digestion by means of graphite furnace atomic absorption spectrometry.
  
  
  METHODS
  after being baked for at least 12 h at 60 degrees C, 0.3 g of meconium was digested by nitric acid and hydrogen peroxide in turn at 80 degrees C under water-bath condition for 1h and then metered to the whole volume of to 2 mL. After correcting the background with D2 lamp, specimen basal corpuscle matched standard curve was used to detect the lead content.
  
  
  RESULTS
  The mean lead content of 93 experimental samples was 1.934 microg x g(-1) with the standard deviation (SD) of 1.551, and that of the 51 control samples was 1.012 microg x g(-1), with the SD of 1.084. There was a significant difference in lead levels of in meconnt between the experimental group and control group (p = 0.000).
  
  
  CONCLUSIONS
  The lead content of the experimental was significantly higher than that of the control group detected by this method. This method was stable and efficient.
authors.affiliation: Central Laboratory, Shantou University Medical College, Shantou 515031, China. liyan2005bo@163.com
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Xi-Jin
authors.initials: XJ
authors.lastname: Xu
authors.forename: Jun-Xiao
authors.initials: JX
authors.lastname: Liu
authors.forename: Liang-Kai
authors.initials: LK
authors.lastname: Zheng
authors.forename: Gang-Jian
authors.initials: GJ
authors.lastname: Chen
authors.forename: Song-Jian
authors.initials: SJ
authors.lastname: Chen
authors.forename: Xia
authors.initials: X
authors.lastname: Huo
mesh_terms: D006108:Graphite; D006801:Humans; D007231:Infant, Newborn; D007854:Lead / Q000032:analysis*; D008470:Meconium / Q000737:chemistry*; D013054:Spectrophotometry, Atomic / Q000379:methods*
chemical_list: D007854:Lead; D006108:Graphite