In this study, heavy- and semi-metals (As, Cd, Cr, Hg, Pb, Tl) content in seaweed and dried fish purchased in ethnic food stores located in southern Italy was assessed. In algae, also iodine was quantified. As was the most abundant element in seaweed (average = 8.19 ± 6.62 mg/kg), followed by Cd (0.38 ± 0.25 mg/kg), and Pb (0.12 ± 0.10 mg/kg). In fish, As was the most abundant element (average = 0.47 ± 0.37 mg/kg), followed by Hg (0.12 ± 0.17 mg/kg). The 19.2% (5/26) of seaweed samples exceed the limit for Cd suggested by CEVA (France), while 12.5% (1/8) of fish samples exceed the limit for Pb imposed by Regulation (EC) No. 1881/2006. Correlations among Hg-As, Cr-Tl, Pb-Tl (seaweed), and As-Cd, As-Pb, Cd-Pb, As-Cr (fish) were observed. The chemometric analysis resulted in a satisfactory clusterization of samples for product type, while the grouping for geographic origin was less precise. Heavy- and semi-metals content in fish and seaweed, as well as iodine levels in algae commercialized in southern Italy, do not seem to be of concern for consumers, but constant monitoring is desirable to increase the data on contamination of these products and for the risk assessment process.

Assessment of heavy- and semi-metals contamination in edible seaweed and dried fish sold in ethnic food stores on the Italian market

Panebianco F.
Primo
;
Nava V.
Secondo
;
Giarratana F.
;
Gervasi T.
Penultimo
;
Cicero N.
Ultimo
2021

Abstract

In this study, heavy- and semi-metals (As, Cd, Cr, Hg, Pb, Tl) content in seaweed and dried fish purchased in ethnic food stores located in southern Italy was assessed. In algae, also iodine was quantified. As was the most abundant element in seaweed (average = 8.19 ± 6.62 mg/kg), followed by Cd (0.38 ± 0.25 mg/kg), and Pb (0.12 ± 0.10 mg/kg). In fish, As was the most abundant element (average = 0.47 ± 0.37 mg/kg), followed by Hg (0.12 ± 0.17 mg/kg). The 19.2% (5/26) of seaweed samples exceed the limit for Cd suggested by CEVA (France), while 12.5% (1/8) of fish samples exceed the limit for Pb imposed by Regulation (EC) No. 1881/2006. Correlations among Hg-As, Cr-Tl, Pb-Tl (seaweed), and As-Cd, As-Pb, Cd-Pb, As-Cr (fish) were observed. The chemometric analysis resulted in a satisfactory clusterization of samples for product type, while the grouping for geographic origin was less precise. Heavy- and semi-metals content in fish and seaweed, as well as iodine levels in algae commercialized in southern Italy, do not seem to be of concern for consumers, but constant monitoring is desirable to increase the data on contamination of these products and for the risk assessment process.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/3212206
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? ND
social impact