Ionic liquids in biological monitoring for exposure assessments

Damokhi, Arezoo; Yousefinejad, Saeed; Yarmohammadi, Reza; Jafari, Saeed

doi:10.1016/j.molliq.2021.117732

Cited by 11 publications

(2 citation statements)

References 213 publications

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“…The most commonly used are atomic absorption spectroscopy (AAS) with atomization in a graphite furnace (in a few cases in a flame) [ 11 , 12 , 13 , 14 ], optical emission spectrometry [ 15 , 16 ], mass spectrometry [ 4 , 5 , 6 , 17 , 18 ] with plasma as a source of excitation or ionization of elements (ICP OES, ICP MS), and total reflection X-ray fluorescence spectrometry (TXRF) [ 19 , 20 ]. In addition to the high operating costs typical of these techniques, they require sample mineralization [ 5 , 6 , 16 , 21 ] or extraction combined with preconcentration [ 13 , 16 , 18 , 22 ]. Therefore, many methods to determine metal ions are being developed using electrochemical [ 23 ] or spectrophotometric techniques [ 24 ], the selectivity of which depends on metal ions’ leaching, enrichment, and chelating.…”

Section: Introductionmentioning

confidence: 99%

Multi-Elemental Analysis of Hair and Fingernails Using Energy-Dispersive X-ray Fluorescence (ED XRF) Method Supported by Inductively Coupled Plasma Mass Spectrometry (ICP MS)

Mierzyńska,

Niemirska,

Zgonina

et al. 2024

Molecules

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This work compared the multi-element analysis of human hair and nails using inductively coupled plasma mass spectrometry (ICP MS) with an easy, fast, cheap, non-destructive method using energy-dispersive x-ray fluorescence (ED XRF). The ICP MS-based method was more sensitive (over 30 elements could be quantified) and costly (requiring more time, samples, and chemicals). The EDX-based method required laboratory and certified reference materials made of hair for instrument calibration. It was less sensitive (16 elements could be quantified: S, Si, Ca, Br, Fe, Cu, Cr, Mg, Si, K, Mn, Ni, Zn, Se, Sr, Pb), but it allowed us to replace troublesome grinding with the dissolution of keratin-based material with an alkalic agent (tetramethylammonium hydroxide, TMAH) and the formation of stable-for-days pellets. This method is simple, enables automation, and, due to the modification of wells in the autosampler of the EDX system via the immersion of home-designed inserts, it requires smaller amounts of biological material and binder (down to 70 mg instead of 500 mg required by commercially available instrument) to perform analysis. It was concluded that the EDX-based method offers complementary selectivity and sensitivity to ICP MS with the possibility of sample reuse for further analysis.

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Section: Introductionmentioning

confidence: 99%

Multi-Elemental Analysis of Hair and Fingernails Using Energy-Dispersive X-ray Fluorescence (ED XRF) Method Supported by Inductively Coupled Plasma Mass Spectrometry (ICP MS)

Mierzyńska,

Niemirska,

Zgonina

et al. 2024

Molecules

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“…37,38 Especially in biological research, several biocompatible ILs have been reported which possess a great tendency to stabilize the native structure as well as the functional activity of the biomolecules including proteins, enzymes and deoxyribonucleic acid (DNA). 39–43 In recent years, great efforts have been made in designing task specific ILs for biological research but very few reports are available on designing self-buffering ILs. 44–46 In our previous article, 47 we reported the self-buffering and biocompatible IL, [TMA][EPPS] (tetramethylammonium 4-(2-hydroxyethyl)-1-piperazinepropanesulfonate, [C 4 H 12 N] [C 9 H 19 O 4 N 2 S], molecular weight = 325.47 g mol −1 ), for enzymatic and biological research.…”

Section: Introductionmentioning

confidence: 99%