Generation of selenium hydride from alkaline solutions: a new concept of the hydride generation-atomic absorption technique

Speciation of Arsenic(III)/Arsenic(V) and Selenium(IV)/Selenium(VI) Using Coupled Ion Chromatography– Hydride Generation Atomic Absorption Spectrometry

Simple analytical methods have been developed to speciate inorganic As and Se in the microgram per liter range using coupled ion chromatography–hydride generation atomic absorption spectrometry. Because of the differences in toxicity and adsorption behavior, determinations of the redox states arsenite, As(III), and arsenate, As(V), and selenite, Se(IV), and selenate, Se(VI), are important. Anio...

Interferences study for Selenium determination using of on Liquid Nitrogen Trap Hydride generation atomic absorption Spectrometry

A method has been developd determine selenium by hydride generation atomic absorption using nitrogen trapping technique. A series of experiments was performed to obtain the optimum condition. The results show that this method has the advantage of being sensitive, accurate, rapid and simple. Transition metal and other hydride forming elements interferences on the determination of selenium was st...

Determination of low selenium concentrations by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) - interference by perchloric acid

In routine determinations of selenium (Se) by flow injection hydride generation atomic absorption spectrometry (Fi-HG-AAS) technique a home-made equipment from commercially available components were used. An electrically heated quartz tube was used as atomiser. Blank and Se-standard solutions were analysed after wet digestion using an oxidising acid mixture (HNO3/HClO4). An absorption signal at...

A Critical Survey of Hydride Generation Techniques in Atomic Spectroscopy

Formation of the hydrides of antimony arsenic, bismuth, germanium, lead, selenium, tellurium and tin by reaction with sodium tetrahydroborate0 affords an excellent method for the separation of these elements as gases from a wide range of matrices. Excellent low limits of detection are attained when this separation method is combined with atomisation of the hydride in a heated quartz tube in the...

Selenium Speciation of Soil/ Sediment Determined with Sequential Extractions and Hydride Generation Atomic Absorption Spectrophotometry