Artículos de revistas
Sample Preparation In Alkaline Media
Registro en:
Spectrochimica Acta - Part B Atomic Spectroscopy. , v. 61, n. 5, p. 465 - 495, 2006.
5848547
10.1016/j.sab.2006.02.006
2-s2.0-33746890935
Autor
Nobrega J.A.
Santos M.C.
de Sousa R.A.
Cadore S.
Barnes R.M.
Tatro M.
Institución
Resumen
The use of tetramethylammonium hydroxide, tertiary amines and strongly alkaline reagents for sample treatment involving extraction and digestion procedures is discussed in this review. The preparation of slurries is also discussed. Based on literature data, alkaline media offer a good alternative for sample preparation involving an appreciable group of analytes in different types of samples. These reagents are also successfully employed in tailored speciation procedures wherein there is a critical dependence on maintenance of chemical forms. The effects of these reagents on measurements performed using spectroanalytical techniques are discussed. Several undesirable effects on transport and atomization processes necessitate use of the method of standard additions to obtain accurate results. 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