2So'gor C,Ga'spa'r A,Posta1 J.Flame atomic absorption spectrometric determination of total chromium and Cr(Ⅵ) in cigarette ash and smoke using flow injection/hydraulic high-pressure sample introduction[J].Microchemical Journal,1998,58:251-255.
3Wuilloud G M,Wuilloud R G,Wuilloud J C A,et al.On-line preconcentration and determination of chromium in parenteral solutions by flow injection^*/flame atomic absorption spectrometry[J].Journal of Pharmaceutical and Biomedical Analysis,2003,31:117-124.
4Kelko-Levai A,Varga I,Zih-Perenyi K,et al.Determination of trace elements in pharmaceutical substances by graphite furnace atomic absorption spectrometry and total reflection X-ray fluorescence after flow injection ion-exchange preconcentration[J].Spectrochimica Acta Part B,1999,54:827-833.
5Pannain M C,Santelli R E.On the spectrophotometric flow injection determination of chromium(Ⅵ) in natural waters after on-line preconcentration on activated alumina[J].Talanta,1995,42:1609-1617.
6Pressman M A,Aldstadt H J.A comparative study of diffusion samplers for the determination of hexavalent chromium by sequential injection spectrophotometry[J].Microchemical Journal,2003,74:47-57.
7Luo Y Y,Nakano S,Holman D A,et al.Sequential injection wetting film extraction applied to the spectrophotometric determination of chromium(Ⅵ) and chromium(Ⅲ) in water[J].Talanta,1997,44:1563-1571.