2016
Combined Matrix Effects in Plasma Pencil Spectroscopy
HRDLIČKA, Aleš; Magda DVOŘÁKOVÁ; Pavel SLAVÍČEK; Karel NOVOTNÝ; Viktor KANICKÝ et al.Základní údaje
Originální název
Combined Matrix Effects in Plasma Pencil Spectroscopy
Autoři
Vydání
2016 Winter Conference on Plasma Spectrochemistry, 2016
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10406 Analytical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/16:00089402
Organizační jednotka
Středoevropský technologický institut
Klíčová slova anglicky
alternative excitation sources; plasma pencil; matrix effects
Změněno: 16. 2. 2016 15:22, doc. Mgr. Karel Novotný, Ph.D.
Anotace
V originále
Plasma pencil is a capacitively coupled jet discharge originally developed and used for surface modification of cultural heritage objects, wood, polymers, (nano)textile fibres and other modern materials. One of its modifications is currently tested as an alternative excitation source for optical emission spectroscopy with liquid model samples. It is a quartz tube (i.d. 2 mm, o.d. 4 mm) asymmetrical T-piece powered by 13.56 MHz at the typical forwarded power of 140 W. The working gas is argon flowing horizontally in the T-piece at 4 l min-1. The liquid sample is introduced vertically into the T-piece with a peristaltic pump, a concentric nebulizer and a Scott spray chamber.The carrier gas (Ar) flow rate is 0.3 l min-1. Previous studies showed good excitation capability especially on alkali metals, group two elements, copper and zinc [1]. Now a study of matrix effects of easily ionizable elements (EIE) in mixtures is presented. Mixtures of two EIEs with copper or zinc as analytes (20 mg l-1) were prepared. The influence of the binary mixture of EIEs on copper and zinc lines intensities is investigated in the range of 0-4 g l-1 of the interferent salts concentration. Additive, multiplicative and more complicated effects depending mainly on the total interferents concentration have been found and discussed in this study.
Návaznosti
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