Simultaneous Determination of 11 Elements in Fly Ash by Inductively Coupled Plasma Orthogonal Acceleration Time-of-Flight Mass Spectrometry After Closed-Vessel Microwave-Assisted Extraction with Ammonium Fluoride
- Авторы: Husáková L.1, Urbanová I.1, Šídová T.1, Šafránková M.1
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Учреждения:
- Department of Analytical Chemistry, Faculty of Chemical Technology
- Выпуск: Том 73, № 7 (2018)
- Страницы: 650-660
- Раздел: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183088
- DOI: https://doi.org/10.1134/S1061934818070092
- ID: 183088
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Аннотация
A method for simultaneous multi-element analysis of fly ash samples by inductively coupled plasma orthogonal acceleration time-of-flight mass spectrometry (oaTOF-ICP-MS) after closed-vessel microwave extraction with ammonium fluoride was introduced here. Corrosive and/or toxic acids like HF, HCl or HClO4, as well as HNO3, which are commonly used during sample preparation of the fly ash samples, are avoided in this method. The spectral effects due to the formation of different Cl, Na, K, Ca, Mg-containing polyatomic species interfering with the determination of a number of elements like As, Se or Ni during the oaTOF-ICP-MS analysis are negligible. Under the optimum experimental extraction conditions evaluated using a fractional factorial design (10 mg of the sample extracted with 5 mL of 140 g/L NH4F for 10 min at 200°C), analysis of the resulting supernatant with Rh as an internal standard enabled precise and accurate simultaneous determination of 11 elements (Li, Be, Ni, As, Se, Rb, Sb, Cs, W, Tl and U) at trace and ultratrace levels. The accuracy was assessed by analysing two certified reference materials, namely Fine Fly Ash CTA-FFA-1 and Constituent Elements in Coal Fly Ash Standard Reference Material® 1633b. The precision of the reported method was better than 10%.
Об авторах
Lenka Husáková
Department of Analytical Chemistry, Faculty of Chemical Technology
Автор, ответственный за переписку.
Email: Lenka.Husakova@upce.cz
Чехия, Pardubice, CZ-532 10
Iva Urbanová
Department of Analytical Chemistry, Faculty of Chemical Technology
Email: Lenka.Husakova@upce.cz
Чехия, Pardubice, CZ-532 10
Tereza Šídová
Department of Analytical Chemistry, Faculty of Chemical Technology
Email: Lenka.Husakova@upce.cz
Чехия, Pardubice, CZ-532 10
Michaela Šafránková
Department of Analytical Chemistry, Faculty of Chemical Technology
Email: Lenka.Husakova@upce.cz
Чехия, Pardubice, CZ-532 10