2024
Laser-induced breakdown spectroscopy in analysis of algae
HRDLIČKA, Aleš, Jana HORSKÁ, Jitka HEGROVÁ, Martina BUCKOVÁ, David PROCHAZKA et. al.Základní údaje
Originální název
Laser-induced breakdown spectroscopy in analysis of algae
Autoři
HRDLIČKA, Aleš (203 Česká republika, domácí), Jana HORSKÁ (203 Česká republika), Jitka HEGROVÁ (203 Česká republika), Martina BUCKOVÁ (203 Česká republika), David PROCHAZKA (203 Česká republika), Jakub BUDAY (703 Slovensko), Viktor KANICKÝ (203 Česká republika), Pavel POŘÍZKA (203 Česká republika) a Jozef KAISER (703 Slovensko)
Vydání
Czech - Slovak Spectroscopic Conference & Mössbauer Spectroscopy in Material Science, 2024
Další údaje
Jazyk
angličtina
Typ výsledku
Prezentace na konferencích
Obor
10406 Analytical chemistry
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Organizační jednotka
Přírodovědecká fakulta
ISBN
978-80-88195-54-2
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: 4. 7. 2024 15:12, Mgr. Aleš Hrdlička, Ph.D.
Anotace
V originále
Green algae Desmodesmus subspicatus are single cell freshwater organisms capable of heavy metals accumulation from water. They are analyzed with Inductively Coupled Plasma Mass Spectrometry (ICP-MS) but the parent solution with algae is filtered, the filter with an algae sediment is decomposed and the resulting solution is analyzed with ICP-MS. However, such procedure is laborious and time-consuming. An alternative technique is Laser-Induced Breakdown Spectroscopy (LIBS) with a Czerny-Turner spectrometer in a double pulse (DP) 1064-1064nm configuration [1]. It is sufficiently sensitive to the heavy metals concentrations of about tens of ng cm-2 on the filter surface. A semiquantitative analysis is then possible. Besides, some interesting facts about LIBS of the cellulose filter were revealed. Contaminated algae show monotonous decrease of lines intensities with number of used layers of adhesive tapes for fixing the filter to a microscope glass while blank and non-contaminated samples do not. Also the total emissivity, electron number density and the matrix elements lines are less intensive on the blank than on the contaminated sample. Analogical behaviour shows also plasma shockwave from shadowgraphy experiments. Behaviour of the analyte and the matrix lines is more similar if their signal-to-noise ratio is high or they have similar excitation energies which can be important for possible internal standardization.
Návaznosti
MUNI/A/1575/2023, interní kód MU |
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