The microwave induced plasma with optical emission spectrometry (MIP–OES) in 23 elements determination in geological samples

Niedzielski, Przemysław; Kozak, Lídia; Wachelka, Marcin; Jakubowski, Karol; Wybieralska, Jadwiga

doi:10.1016/j.talanta.2014.10.009

Cited by 56 publications

(29 citation statements)

References 30 publications

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“…The UV-Vis spectrophotometer (Shimadzu, Japan) was used for spectrophotometric analyses. Detailed instrument parameters of analytical methods have been described previously (Niedzielski et al 2014).…”

Section: Instrumentation and Reagentsmentioning

confidence: 99%

Monitoring of essential and toxic elements in multi-ingredient food supplements produced in European Union

Poniedziałek

Niedzielski

Kozak³

et al. 2018

J Consum Prot Food Saf

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The market of food supplements (FS) in European Union (EU) is on the rise. The present study investigated the content of essential (Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Zn) and toxic elements (Cd, Cr(VI), Ni and Pb) in 168 FS produced in the EU and designed to support various health aspects (nutrition, neurological function, reproduction, weight loss, cosmetic appearance). The majority of FS did not exceed a dissolution time of 60 min in hydrochloric acid (89.8%) and phosphate buffer (85.7%). Cd and Cr(VI) were not detected in any FS, Ni and Pb were present sporadically (in 10.1 and 6.5%, respectively) at mean concentrations of 0.06 and 0.07 mg/single unit dose, respectively. All FS containing detectable Pb levels had exceeded a maximum allowance level (3.0 mg kg -1 ) set by the European Commission. Generally, the determined concentrations of essential elements fall greatly below recommended safety upper limits, except Fe in selected FS (mainly for pregnant women). Compared to the value declared on the product label, the majority of tested FS displayed mineral content below the accepted margin (70-130%). In general, the majority of the studied FS can be considered safe although discrepancies between declared and determined mineral content are worrisome. These findings are important in view of FS consumer safety.

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Section: Instrumentation and Reagentsmentioning

confidence: 99%

Monitoring of essential and toxic elements in multi-ingredient food supplements produced in European Union

Poniedziałek

Niedzielski

Kozak³

et al. 2018

J Consum Prot Food Saf

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show abstract

“…For high differences of the analytical wavelengths: 769.897 nm for K, 616.217 nm for Ca, 383.829 for Mg follow previous work (Niedzielski et al 2015) and 213.618 nm for P (follow manufacturer of the spectrometer) the monochromator adjusting is the most time-consuming step of the analysis. Additionally, the emission at analytical wavelength of phosphorus (213.618 nm) and potassium (766.491 nm or 769.897 nm) was essentially higher than at the alternative wavelengths (the relative emission factor 56 824 for K at 766.491 nm or 110 084 for K at 769.897 nm versus 164 for K at 344.738 nm, and 547 for P at 213.618 nm versus 131 for P at 764.934 nm).…”

Section: Resultsmentioning

confidence: 97%

“…This is the reason that the analytical procedure of calcium, magnesium, phosphorus and potassium determination in Mehlich's solution extract should be different to the standard analytical procedure used e.g. for geochemical studies (Niedzielski et al 2015). Given the sufficiently high quality of the results (according the quality management system based on ISO 17025), the analysis should be shortened to obtain the high laboratory throughput.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Microwave induced plasma optical emission spectrometry in agricultural analysis

Niedzielski¹,

Kozak²,

Jakubowski³

et al. 2016

PLANT SOIL ENVIRON

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“…The detection limit for Cd was 0.01 mg kg -1 (for dry samples). Analysis of Cd and verification of result quality were performed according to the procedures described by Niedzielski et al (2015).…”

Section: Cadmium Determinationmentioning

confidence: 99%

Induction of phytochelatins and flavonoids in cadmium polluted Berberis thunbergii

Chadzinikolau¹,

Kozłowska²,

Mleczek³

2017

Dendrobiology

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Cadmium tolerance has been widely studied in various plant species. The study was undertaken to assess the response of Berberis thunbergii, commonly growing under urban conditions, to increasing concentrations of cadmium (1, 4 and 16 mg of Cd kg -1 soil). Experiments were conducted from June to August in a greenhouse. Accumulation of cadmium ions in barberry leaves was observed, at a simultaneous occurrence of mechanisms reducing its harmful effects by an increased synthesis of phytochelatins (PCs). Generation of PCs -putative heavy metal chelators was related to the phytochelatin synthase activity (PCS) and the level of metal accumulation. Increased contents of anthocyanins and flavonols in cadmium polluted barberry, considering that it is a coloured-leaf plant seems important in aspect of their multifunctional role in plant-environment interactions. Besides the capacity to chelate heavy metals, flavonoids are antioxidants and efficiently scavenge free radicals. Moreover, the content of chloroplast pigments was determined, but the changes were non-significant.

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The microwave induced plasma with optical emission spectrometry (MIP–OES) in 23 elements determination in geological samples

Cited by 56 publications

References 30 publications

Monitoring of essential and toxic elements in multi-ingredient food supplements produced in European Union

Monitoring of essential and toxic elements in multi-ingredient food supplements produced in European Union

Microwave induced plasma optical emission spectrometry in agricultural analysis

Induction of phytochelatins and flavonoids in cadmium polluted Berberis thunbergii

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