Determination of cadmium and lead in vegetables by stripping chronopotentiometry

Coco, Filippo Lo; Monotti, P; Novelli, Veronica; Ceccon, Luciano; Adami, Gianpiero; Micali, Giuseppe

doi:10.1080/02652030410001677754

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…Electroanalysis of elemental impurities in organic matrices typically also requires sample preparation to remove the organic matrices prior to analysis [35,[54][55][56][57][58][59][60][61][62][63], as in the aforementioned ICP analyses of pharmaceuticals. Both wet-and dry-ashing require slow and careful work to reduce errors.…”

Section: Introductionmentioning

confidence: 99%

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

Rosolina

Chambers

Lee

et al. 2015

Analytica Chimica Acta

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Section: Introductionmentioning

confidence: 99%

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

Rosolina

Chambers

Lee

et al. 2015

Analytica Chimica Acta

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“…The major source of Pb and Cd are environmental pollutants, i.e. wastewater, solid waste, dust emitted to the atmosphere, chemical fertilizers, and pesticides (LO COCO et al 2000, YUSUF et al 2003, KHAIRIAH et al 2004, RUSINEK, CZECH 2007. The excess of these metals in food is implicated to raise the incidence of many diseases of the cardiovascular, respiratory and nervous systems.…”

Section: Introductionmentioning

confidence: 99%

Content of nitratesV and III and heavy metals in selected Brassica vegetables depending on storage

Czech¹,

Rusinek²

2012

J. Elem.

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The study has been performed to analyze the content of nitrates V and III as well as lead and cadmium in Brassica vegetables, both fresh and after 5-month storage in a cool storeroom. The experimental material consisted of Chinese cabbage, red and white cabbage, savoy cabbage and Brussels sprouts. The content of nitrates in the plant material was determined with the spectrophotometric method based on Griess reaction, whereas concentrations of heavy metals were assayed with the AAS method after dry mineralization.The 5-month storage period was found to decrease (by ca 65±5%) the content of nitrates V in savoy cabbage and Brussels sprouts. In turn, a ca 2-fold increase in the concentration of these compounds was determined in Chinese cabbage, and a similar tendency was observed in white cabbage. Chinese cabbage turned out to be the richest in the analyzed, undesirable elements and compounds, e.g. after storage it was characterized by an exceeded permissible level of nitrates V (750 mg kg -1 f.w.) and by the biggest, ca 10-fold, increase in concentrations of lead and cadmium. Besides, storage was observed to cause a significant increase in the content of nitrates III in the analyzed vegetables, except red cabbage, in which their content was shown to decrease by about 40%.Concentrations of nitrates III and V, Pb 2+ and Cd 2+ in tissues of the cabbage plants should be monitored regularly in order to prevent their excessive accumulation in the food chain of man.Key words: Brassica vegetables, storage, nitrates V, nitrates III, heavy metals. ZAWARTOOEAE AZOTANÓW V I III ORAZ METALI CIÊ¯KICH W WYBRANYCH WARZYWACH KAPUSTNYCH W ZALE¯NOOECI OD CZASU PRZECHOWYWANIA AbstraktCelem badañ by³o przeanalizowanie zawartooeci azotanów V i III oraz o³owiu i kadmu w oewie¿ych warzywach kapustnych i po ich 5-miesiêcznym przechowywaniu w ch³odnych magazynach. Materia³ badawczy stanowi³y: kapusta pekiñska, kapusta g³owiasta czerwona i bia³a, kapusta w³oska oraz kapusta brukselska. W materiale rooelinnym zawartooeae azotanów oznaczono metod¹ spektrometryczn¹, opart¹ na reakcji Griessa, natomiast metale ciê¿kie -metod¹ AAS po mineralizacji suchej.Okres 5-miesiêcznego przechowania wp³yn¹³ na obni¿enie (o ok. 65±5%) zawartooeci azotanów V w g³ówkach kapusty w³oskiej i brukselskiej, natomiast ok. 2-krotny wzrost koncentracji tych zwi¹zków odnotowano w kapuoecie pekiñskiej, podobn¹ tendencjê zaobserwowano w przypadku kapusty bia³ej. Kapusta pekiñska okaza³a siê warzywem najbardziej ska¿onym substancjami niepo¿¹danymi, po przechowywaniu bowiem odnotowano przekroczenie (750 mg kg -1 oe.m.) zawartooeci azotanów V oraz najwiêkszy, ok. 10-krotny wzrost zawartooeci o³owiu i kadmu. Przechowywanie spowodowa³o istotny wzrost zawartooeci azotanów III w analizowanych warzywach z wyj¹tkiem kapusty g³owiastej czerwonej, w której nast¹pi³ ok. 40% spadek koncentracji omawianych zwi¹zków.W celu zapobiegania nadmiernemu gromadzeniu siê tych zwi¹zków w ³añcuchu pokarmowym cz³owieka, niezbêdne jest regularne monitorowanie azotanów V i III oraz Pb 2+ i Cd 2+ w tk...

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Analytical methods for heavy metals in herbal medicines

Yuan

Chapman

2011

Phytochemical Analysis

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In this review, we discuss in detail several commonly used and sensitive analytical techniques, including atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry or mass spectrometry, X-ray fluorescence spectrometry, high-performance liquid chromatography, differential pulse polarography, neutron activation analysis and anodic stripping voltammetry. We also provide some application examples of these analytical techniques for heavy metals in herbal medicines.

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Determination of cadmium and lead in vegetables by stripping chronopotentiometry

Cited by 5 publications

References 22 publications

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

Content of nitratesV and III and heavy metals in selected Brassica vegetables depending on storage

Analytical methods for heavy metals in herbal medicines

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