Generování těkavých specií zinku pro detekci atomovou spektrometrií

This diploma thesis deals with the determination of zinc by volatile species generation with detection by atomic absorption or fluorescence spectrometry. Volatile zinc species are generated using hydrochloric acid and sodium borohydride stabilized with sodium hydroxide. Conditions influencing the ge...

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Main Author: Dlouhá, Kateřina
Other Authors: Nováková, Eliška
Format: Dissertation
Language:Czech
Published: 2021
Online Access:http://www.nusl.cz/ntk/nusl-449003
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spelling ndltd-nusl.cz-oai-invenio.nusl.cz-4490032021-08-08T17:11:06Z Generování těkavých specií zinku pro detekci atomovou spektrometrií Generation of zinc volatile species for determination by atomic spectrometry Dlouhá, Kateřina Nováková, Eliška Kratzer, Jan This diploma thesis deals with the determination of zinc by volatile species generation with detection by atomic absorption or fluorescence spectrometry. Volatile zinc species are generated using hydrochloric acid and sodium borohydride stabilized with sodium hydroxide. Conditions influencing the generation and atomization of volatile species were optimized, namely hydrochloric acid concentration, sodium borohydride concentration, sodium hydroxide concentration, hydrochloric acid flow rate, sample loop volume, reaction coil volume, frit porosity in a gas-liquid separator, argon and hydrogen flow rates, and last, the temperature to which the quartz atomizer is heated. Under the optimal conditions, the detection limit of 33 μg·l−1 and the limit of determination of 110 μg·l−1 were reached. It was found that the addition of various reagents (especially 8-hydroxyquinoline) can increase the generation efficiency. With the addition of 1 % (m/V) 8-hydroxyquinoline to the standard/sample the limit of detection was 4 μg·l−1 and the limit of quantification was 12 μg·l−1 . Using an atomic fluorescence spectrophotometer as the detector, the standard reference material was analyzed and good match with the certified concentration value was found, the certified zinc concentration value in the reference material is... 2021 info:eu-repo/semantics/masterThesis http://www.nusl.cz/ntk/nusl-449003 cze info:eu-repo/semantics/restrictedAccess
collection NDLTD
language Czech
format Dissertation
sources NDLTD
description This diploma thesis deals with the determination of zinc by volatile species generation with detection by atomic absorption or fluorescence spectrometry. Volatile zinc species are generated using hydrochloric acid and sodium borohydride stabilized with sodium hydroxide. Conditions influencing the generation and atomization of volatile species were optimized, namely hydrochloric acid concentration, sodium borohydride concentration, sodium hydroxide concentration, hydrochloric acid flow rate, sample loop volume, reaction coil volume, frit porosity in a gas-liquid separator, argon and hydrogen flow rates, and last, the temperature to which the quartz atomizer is heated. Under the optimal conditions, the detection limit of 33 μg·l−1 and the limit of determination of 110 μg·l−1 were reached. It was found that the addition of various reagents (especially 8-hydroxyquinoline) can increase the generation efficiency. With the addition of 1 % (m/V) 8-hydroxyquinoline to the standard/sample the limit of detection was 4 μg·l−1 and the limit of quantification was 12 μg·l−1 . Using an atomic fluorescence spectrophotometer as the detector, the standard reference material was analyzed and good match with the certified concentration value was found, the certified zinc concentration value in the reference material is...
author2 Nováková, Eliška
author_facet Nováková, Eliška
Dlouhá, Kateřina
author Dlouhá, Kateřina
spellingShingle Dlouhá, Kateřina
Generování těkavých specií zinku pro detekci atomovou spektrometrií
author_sort Dlouhá, Kateřina
title Generování těkavých specií zinku pro detekci atomovou spektrometrií
title_short Generování těkavých specií zinku pro detekci atomovou spektrometrií
title_full Generování těkavých specií zinku pro detekci atomovou spektrometrií
title_fullStr Generování těkavých specií zinku pro detekci atomovou spektrometrií
title_full_unstemmed Generování těkavých specií zinku pro detekci atomovou spektrometrií
title_sort generování těkavých specií zinku pro detekci atomovou spektrometrií
publishDate 2021
url http://www.nusl.cz/ntk/nusl-449003
work_keys_str_mv AT dlouhakaterina generovanitekavychspeciizinkuprodetekciatomovouspektrometrii
AT dlouhakaterina generationofzincvolatilespeciesfordeterminationbyatomicspectrometry
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