Stibine and bismuthine trapping in quartz tube atomizers for atomic absorption spectrometry. Part 2: a radiotracer study

Hydride generation – in-atomizer collection of Pb in quartz tube atomizers for atomic absorption spectrometry – a 212Pb radiotracer study

“…As a consequence, the separate trap design is suited for radiotracer experiments as demonstrated recently in a radiotracer investigation of stibine and bismuthine trapping in quartz traps. 21 A new piece of the trap can be used for each experiment. The separate trap can be easily placed into the sample vial of the detector to quantify the activity (see Section 2.5).…”

“…The data evaluation was performed according to the conventions in ref. 21: input activity of the radiolabeled standard solution was counted prior to each experiment, the activity remaining in the sampling vial aer the experiment was subtracted from the input activity giving the net activity taken for each experiment. The trapping and volatilization efficiency, respectively, was always quantied by relating the activity of the analyte found in the separate trap or in the inlet arm of the trapand-atomizer device and in the absorber columns in the corresponding procedure to the activity of the analyte converted to the gaseous phase.…”

“…The analyte fraction retained in any part of the apparatus is dened as the ratio of the activity found in any part of the apparatus aer the experiment to the activity of the analyte converted to the gaseous phase. 21 The pieces of the quartz trap, the column packed with activated carbon as the absorber as well as all the other parts of the apparatus including the tubing, connections, etc. were placed into the sample vials of the detector.…”

Dielectric barrier discharge plasma atomizer for hydride generation atomic absorption spectrometry—Performance evaluation for selenium

“…Interferences of As, Sb and Bi on Se determination were investigated since these hydride-forming elements are effectively co-generated [22,40] with selenium hydride (generation efficiency ≥ 90%). Other hydrideforming elements (Sn, Pb) were not investigated since generation efficiency of their hydrides under the employed conditions is very low [22,31].…”

Ultratrace determination of arsenic by hydride generation atomic absorption spectrometry with preconcentration on gold nanoparticles

“…Our original intention was to optimize hydride trapping and subsequent analyte volatilization employing the bare quartz surface. These efforts were successful in the case of Sb, [31][32][33] Bi, 31,32,34 Pb 35,36 and Sn. 37 As a consequence, 100% preconcentration efficiency was reached for all these four analytes under optimized conditions employing a preconcentration at the non-modied quartz surface in an integrated trap-and-atomizer device.…”