Preparation of biological materials for determination of selenium by hydride generation-atomic absorption spectrometry

Determination of selenium in biological materials by stable isotope dilution gas chromatography-mass spectrometry

“…Previous work (31) has shown quantitative selenium recoveries when using "OB, H3P04, and H202 to digest biological samples. To be evaluated here is the derivatization of selenium in this digestion matrix.…”

Determination of selenium in blood serum by inductively coupled plasma atomic emission spectrometry with pneumatic nebulization

“…For the sake of safety, the use of HClO 4 is to be avoided. The mixture of HNO 3 +H 3 PO 4 +H 2 O 2 was proved to be efficient for sample decomposition with subsequent hydride generation [28,29]. Dry-ashing with Mg(NO 3 ) 2 can also be used [29,30].…”

“…The serum reference material, Seronorm MI 0181, (Sero AS, Norway), with certified selenium content of 83 µg/L was used for method validation.Samples were either digested under atmospheric pressure in glass beakers covered with watch glass or they were decomposed in autoclaves. Methods presented in several papers[23,24,25,26,27,28,29] were employed, compared and a final procedure was selected so as to obtain minimum residual carbon content. In an open system, 5 mL of sample was mixed with 10 mL of HNO 3 and boiled for 20 min.…”

Determination of Arsenic and Selenium in Food using a Microwave Digestion–Dry Ash Preparation and Flow Injection Hydride Generation Atomic Absorption Spectrometry

“…Thus, matrix matching with magnesium nitrate was not required for standards. However, magnesium in great excess of levels recommended can interfere with HG-AAS (Reamer and Veillon, 1981;Yban ez et al, 1992;Cervera et al, 1994).…”