Evaluation of approaches to the abatement of nitrate interference with photochemical vapor generation

2017 ◽  
Vol 32 (12) ◽  
pp. 2378-2390 ◽  
Author(s):  
Gisele S. Lopes ◽  
Ralph E. Sturgeon ◽  
Patricia Grinberg ◽  
Enea Pagliano
Keyword(s):  
Acetic Acid ◽  
Acidic Medium ◽  
Sulfamic Acid ◽  
Vapor Generation ◽  
Photochemical Vapor Generation

Quantitative photochemical destruction of nitrate in an alkaline hydrazine medium followed by removal of nitrite with sulfamic acid in an acidic medium permits interference-free photochemical vapor generation of dimethylselenide from dilute acetic acid.

Copper-ion Assisted Photochemical Vapor Generation of Bromide and Bromate

2021 ◽  
Author(s):  
Richard Macedo de Oliveira ◽  
Daniel Borges ◽  
Patricia Grinberg ◽  
Zoltan Mester ◽  
Ralph E Sturgeon
Keyword(s):  
Acetic Acid ◽  
Acid Medium ◽  
Copper Ion ◽  
Vapor Generation ◽  
Acetic Acid Medium ◽  
Photochemical Vapor Generation

Significant enhancements in the photochemical vapor generation (PVG) efficiencies of both Br- and BrO3- species from a 2 % acetic acid medium occur in the presence of 10 mg L-1...

High-efficiency photoreductive vapor generation of osmium

2021 ◽  
Author(s):  
Richard M. de Oliveira ◽  
Daniel L. G. Borges ◽  
Patricia Grinberg ◽  
Ralph E. Sturgeon
Keyword(s):  
Acetic Acid ◽  
High Efficiency ◽  
Vapor Generation ◽  
Icp Ms ◽  
Photochemical Vapor Generation

Photochemical vapor generation of Os. OsO4 oxidative product from photolysis of 5% HNO3 medium; reductive product from 1% acetic acid/50 mg L−1 Fe3/2+ an uncharacterized organometallic Os compound [Osw(CO)x(CH3)yHz] detected by ICP-MS.

Racemization rates of 3,4-didehydro-2-amino acids

1989 ◽  
Vol 54 (12) ◽  
pp. 3381-3386 ◽  
Author(s):  
Libor Havlíček ◽  
Jan Hanuš ◽  
Jan Němeček
Keyword(s):  
Amino Acids ◽  
Acetic Acid ◽  
Acidic Medium

The racemization rates of amino acids in acidic medium (acetic acid) were studied. The sensitivity to racemization decreases in the order (E)-3,4-didehydroornithine > (E)-Nδ-Z-3,4-didehydroornithine >> (Z)-3,4-didehydronorvaline > ornithine, norvaline. (E)-3,4-Didehydroornithine is also relatively rapidly racemized on heating with 5 M or 0.05 M-HCl (100 °C).

A miniaturized UV-LED photochemical vapor generator for atomic fluorescence spectrometric determination of trace selenium

2018 ◽  
Vol 33 (7) ◽  
pp. 1217-1223 ◽  
Author(s):  
Zhirong Zou ◽  
Fujian Xu ◽  
Yunfei Tian ◽  
Xiaoming Jiang ◽  
Xiandeng Hou
Keyword(s):  
Vapor Generation ◽  
Atomic Fluorescence ◽  
Uv Led ◽  
Photochemical Vapor Generation ◽  
Vapor Generator

A miniaturized UV-LED photochemical reactor is proposed for selenium photochemical vapor generation (Photo-CVG).

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