A Perkin–Elmer 1100B double beam atomic absorption spectrometer equipped with a MHS-10 hydride generator was used for the Se determination. Argon of 99.999% purity at 300 mL/min was used as carrier gas for Se determination by HG–AAS. The Perkin–Elmer 5100 Zeeman atomic absorption spectrometer and HGA-5100 graphite furnace with pyrolytically coated graphite tubes of the standard type non-platform and AS-90 autosampler were used in Cu, Cr, and Mn determinations. Measurements were performed at 196.0 nm for Se, 324.8 nm for Cu, 357.9 nm for Cr, and 279.5 nm for Mn, using hollow cathode lamps. A Selecta multiplace digestion block and Pyrex tubes were used for sample mineralization. A Moulinex blender was used for sample homogenization. Bidistilled deionized water with a specific resistivity of 18 MX cm was obtained using a
Milli-Q system (Millipore, Milford, MA).
A Perkin–Elmer 1100B double beam atomic absorption spectrometer equipped with a MHS-10 hydride generator was used for the Se determination. Argon of 99.999% purity at 300 mL/min was used as carrier gas for Se determination by HG–AAS. The Perkin–Elmer 5100 Zeeman atomic absorption spectrometer and HGA-5100 graphite furnace with pyrolytically coated graphite tubes of the standard type non-platform and AS-90 autosampler were used in Cu, Cr, and Mn determinations. Measurements were performed at 196.0 nm for Se, 324.8 nm for Cu, 357.9 nm for Cr, and 279.5 nm for Mn, using hollow cathode lamps. A Selecta multiplace digestion block and Pyrex tubes were used for sample mineralization. A Moulinex blender was used for sample homogenization. Bidistilled deionized water with a specific resistivity of 18 MX cm was obtained using aMilli-Q system (Millipore, Milford, MA).
การแปล กรุณารอสักครู่..
