Sample preparation for cadmium quantification in sunflower (Heliánthus ánnuus) seeds using anodic stripping voltammetry

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Sample preparation for cadmium quantification in sunflower (Heliánthus ánnuus) seeds using anodic stripping voltammetry. / Zubakina, Ekaterina A.; Solovyev, Nikolay D.; Savinkova, Elena S.; Slesar', Nina I.

In: Analytical Methods, Vol. 8, 2016, p. 326-332.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{d188bf2b97e043cd9416420561fa8942,

title = "Sample preparation for cadmium quantification in sunflower (Heli{\'a}nthus {\'a}nnuus) seeds using anodic stripping voltammetry",

abstract = "The performance of acid extraction, dry ashing, and microwave digestion was evaluated for voltammetric cadmium quantification in oil crops with sunflower (Heli{\'a}nthus {\'a}nnuus) seeds as an example. Standard additions, reference material analysis, and comparison to graphite furnace atomic absorption spectrometry were employed for validation. The main aim of the study was to address the difficulties of oil crop mineralization such as high fat content, material inhomogeneity, and complications in maintaining sample representativeness. 6 brands of fried sunflower seeds (Krasnodar region, Russia) were studied. Acid extraction with nitric acid and hydrogen peroxide provided low digestion efficacy, while dry ashing provided efficient sample decomposition, however, resulted in considerable time frame extension. Microwave-assisted digestion provided the best performance with a dynamic range of 0.05–0.75 μg g−1, detection limit of 0.02 μg g−1, spike recoveries of 95–100%, and within-run relative standard deviation of 5–7%",

keywords = "anodic striping voltammetry, atomic absorption spectrometry, sunflower seeds, microwave assisted digestion, dry ashing, acid extraction",

author = "Zubakina, {Ekaterina A.} and Solovyev, {Nikolay D.} and Savinkova, {Elena S.} and Slesar', {Nina I.}",

year = "2016",

doi = "10.1039/C5AY02275D",

language = "English",

volume = "8",

pages = "326--332",

journal = "Analytical Methods",

issn = "1759-9660",

publisher = "Royal Society of Chemistry",

}

RIS

TY - JOUR

T1 - Sample preparation for cadmium quantification in sunflower (Heliánthus ánnuus) seeds using anodic stripping voltammetry

AU - Zubakina, Ekaterina A.

AU - Solovyev, Nikolay D.

AU - Savinkova, Elena S.

AU - Slesar', Nina I.

PY - 2016

Y1 - 2016

N2 - The performance of acid extraction, dry ashing, and microwave digestion was evaluated for voltammetric cadmium quantification in oil crops with sunflower (Heliánthus ánnuus) seeds as an example. Standard additions, reference material analysis, and comparison to graphite furnace atomic absorption spectrometry were employed for validation. The main aim of the study was to address the difficulties of oil crop mineralization such as high fat content, material inhomogeneity, and complications in maintaining sample representativeness. 6 brands of fried sunflower seeds (Krasnodar region, Russia) were studied. Acid extraction with nitric acid and hydrogen peroxide provided low digestion efficacy, while dry ashing provided efficient sample decomposition, however, resulted in considerable time frame extension. Microwave-assisted digestion provided the best performance with a dynamic range of 0.05–0.75 μg g−1, detection limit of 0.02 μg g−1, spike recoveries of 95–100%, and within-run relative standard deviation of 5–7%

AB - The performance of acid extraction, dry ashing, and microwave digestion was evaluated for voltammetric cadmium quantification in oil crops with sunflower (Heliánthus ánnuus) seeds as an example. Standard additions, reference material analysis, and comparison to graphite furnace atomic absorption spectrometry were employed for validation. The main aim of the study was to address the difficulties of oil crop mineralization such as high fat content, material inhomogeneity, and complications in maintaining sample representativeness. 6 brands of fried sunflower seeds (Krasnodar region, Russia) were studied. Acid extraction with nitric acid and hydrogen peroxide provided low digestion efficacy, while dry ashing provided efficient sample decomposition, however, resulted in considerable time frame extension. Microwave-assisted digestion provided the best performance with a dynamic range of 0.05–0.75 μg g−1, detection limit of 0.02 μg g−1, spike recoveries of 95–100%, and within-run relative standard deviation of 5–7%

KW - anodic striping voltammetry

KW - atomic absorption spectrometry

KW - sunflower seeds

KW - microwave assisted digestion

KW - dry ashing

KW - acid extraction

U2 - 10.1039/C5AY02275D

DO - 10.1039/C5AY02275D

M3 - Article

VL - 8

SP - 326

EP - 332

JO - Analytical Methods

JF - Analytical Methods

SN - 1759-9660

ER -

ID: 7550523