An indirect atomic-absorption method for the determination of selenium

Taking a deeper look into the roles of amines in atomic absorption spectrometry

“…The organic phase is shaken with 0.21 nM Pd (II) chloride for 15 min in acetate buffer at pH 3.0 to extract the complex, followed by the measurement of Pd by FAAS. 172 Se separation follows via the formation of the monoand di-piazselenol with 3,3 ′ -diamine-benzidine at pH 1.5 in the dark, and is extracted into xylene at pH 7.0 and determined by FAAS. Separation of Ag from the sulphide concentrate is possible by diethyl triamine or by forming its salicylic acid-dibutyl amine complex in 4-methyl pentane-2-one.…”

Determination of selenium in water and industrial effluents by flameless atomic absorption

“…Conventional flame atomic absorption and atomic emission spectrometry have been successfully used to determine abnormal levels of lithium in blood serum (3)(4)(5)(6). It has been suggested that there is no significant difference in sensitivity between the two techniques (4,6,7), although atomic emission is generally accepted as the more convenient.…”

“…Improvement in the detection limit for selenium by use of an indirect atomic absorption method has been reported (7). Unfortunately, the claimed detection limit (0.018 mg/1.…”

Determination of selenium(IV) in pharmaceuticals and premixes by micellar liquid chromatography

“…The most commonly used methods for selenium determination are ICP-MS methods [10,11], AAS with using hydride generation system or graphite cell [12][13][14], atomic fluorescence spectroscopy [15] and spectrofluorometric methods after derivatization [16,17]. Sun et al [18] proposed capillary electrophoresis methods and Stoica et al [19] used differential pulse cathodic stripping voltammetry for selenium determination in pharmaceutical products.…”