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      ATOMIC ABSORPTION SPECTROPHOTOMETRY COOKBOOK 2
      http://www.isolearn.com  2011-01-24 报考审核员

      ATOMIC ABSORPTION SPECTROPHOTOMETRY COOKBOOK
      Section 3-2

      Measuring Conditions by Element of Flame Atomic
      Absorption Spectrophotometry

      Standard substance and standard solution preparation method
      Refer to Section 2 - 3 for the Standard solution preparation method

      Measuring conditions and Calibration curve
       · Measuring conditions
       Current ; 10 mA/0 mA Burner height ; 7 mm
       Wave length ; 422.7 nm Burner angle ; 0 deg
       Slit width ; 0.5 nm Fuel gas flow ; 2.0 l/min
       Lighting mode ; BGC-D2 Type of oxidant ; air

       · Calibration curve in BGCD2 mode
       STD. CONC. ABS.
       No. (ppm) 422.7nm
       1 0.5000 0.0565
       2 1.0000 0.1096
       3 2.0000 0.2179

      K0= 0.0000, K1= 0.1093

      Interference
      Negative interference is received if Al, Be, P, V, Si, Ti and Zr coexist. Therefore, 0.1 to 0.2% lanthanum chloride or strontium is added to the standard or unknown sample.
      Standard substance and standard solution preparation method
      Refer to Section 2 - 3 for the Standard solution preparation method

      Measuring conditions and Calibration curve
       · Measuring conditions
       Current ; 10 mA/0 mA Burner height ; 17 mm
       Wave length ; 422.7 nm Burner angle ; 0 deg
       Slit width ; 0.5 nm Fuel gas flow ; 6.5 l/min
       Lighting mode ; BGC-D2 Type of oxidant ; N2O

       · Calibration curve in BGCD2 mode
       STD. CONC. ABS.
       No. (ppm) 422.7nm
       1 0.1000 0.0368
       2 0.2000 0.0696
       3 0.4000 0.1479

      K0= 0.0000, K1= 0.3655

      Interference
      Negative interference, due to coexist substances in the Air-C2H2 flame, is removed by using the N2O-C2H2 flame. However, it is ionized and 0.1 to 0.2% potassium chloride is added to the standard or unknown sample.
      Standard substance and standard solution preparation method
      Refer to Section 2 - 3 for the Standard solution preparation method

      Measuring conditions and Calibration curve
       · Measuring conditions
       Current ; 8 mA/0 mA ; 8 mA/100 mA Burner height ; 7 mm
       Wave length ; 228.8 nm ; 228.8 nm Burner angle ; 0 deg
       Slit width ; 0.5 nm ; 0.5 nm Fuel gas flow ; 1.8 l/min
       Lighting mode ; BGC-D2 ; BGC-SR Type of oxidant ; air

       · Calibration curve in BGCD2 mode
       STD. CONC. ABS.
       No. (ppm) 228.8nm
       1 0.1000 0.0605
       2 0.2000 0.1153
       3 0.4000 0.2478

      = 0.0000, K1= 0.6106

       · Calibration curve in BGC-SR mode
       STD. CONC. ABS.
       No. (ppm) 228.8nm
       1 0.1000 0.0329
       2 0.2000 0.0659
       3 0.4000 0.1272

       K0= 0.0000, K1= 0.3207

      Interference
      Interference is small.
      Standard substance and standard solution preparation method
      Refer to Section 2 - 3 for the Standard solution preparation method

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