2023
Material aspects in laser-induced breakdown spectroscopy analysis of algae on filters
HRDLIČKA, Aleš; Jana HORSKÁ; Jitka HEGROVÁ; David PROCHÁZKA; Jakub BUDAY et. al.Základní údaje
Originální název
Material aspects in laser-induced breakdown spectroscopy analysis of algae on filters
Autoři
HRDLIČKA, Aleš (203 Česká republika, domácí); Jana HORSKÁ (203 Česká republika, domácí); Jitka HEGROVÁ (203 Česká republika); David PROCHÁZKA (203 Česká republika); Jakub BUDAY (703 Slovensko); Pavel POŘÍZKA (203 Česká republika); Jozef KAISER (203 Česká republika); Karel NOVOTNÝ (203 Česká republika, domácí) a Viktor KANICKÝ (203 Česká republika, domácí)
Vydání
12th Euro-Mediterranean Symposium on Laser-induced Breakdown Spectroscopy, 2023
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10406 Analytical chemistry
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Kód RIV
RIV/00216224:14310/23:00131711
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova česky
spektroskopie laserem buzeného plazmatu (LIBS); analýza; řasy; kontaminace; stínové zobrazení
Klíčová slova anglicky
laser-induced breakdown spectroscopy; analysis; algae; contamination; shadowgraphy
Příznaky
Mezinárodní význam
Změněno: 20. 9. 2023 15:14, Mgr. Aleš Hrdlička, Ph.D.
Anotace
V originále
Determination of heavy metals in algae is an important environmental issue. The typical employed instrumentation is Inductively Coupled Plasma Mass Spectrometry (ICP-MS) [1]. However, the algae must be filtered from a parent solution and the filter is consequently decomposed and analysed. On the other hand, Laser-induced Breakdown Spectroscopy (LIBS) can directly analyse dried and/or pelletized algae [2] or just ablate an algae sediment on the filter [3]. Quantitative analysis of the algae on the filter is, beside others, complicated by different intensities of spectra depending on the deposit and the hardness of the filter underlay. The whole filter area is fixed to a microscopic glass with a double adhesive tape. The fixation must be done very precisely. The emission signal will decrease and the filter is perforated if it does not touch the glass properly. Also the concentration of the contaminants in the solution influences the total plasma emission. The character of the system filter-tape-glass is investigated in dependence on the sticking layers and filtered solution. It is shown how the total spectral emission, plasma parameters and lines intensities change (e.g. ionic-to-atomic line ration decrease) in dependence on the hardness of the sticking. The observed intensities changes are supported with shadowgraphic studies of shockwaves and crater depths at 1064 nm LIBS. The shockwave is slightly decreased on a softer or more impregnated filter system. It can be concluded that a lower contamination, low number of dead algae cells and a thin tape on a hard glass base provide higher emission signals but blank filter emission is lower on a sufficiently hard base. An appropriate combination of the total emissivity, lines ratios and shadowgraphy can then be used for internal standardization. The correction for the aforementioned effects can improve the trueness of the quantification.
Návaznosti
MUNI/A/1298/2022, interní kód MU |
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