The aim of this study was to investigate the quali/quantitative profile by IC (Ion Chromatography) technique of the inorganic constituents( cations: Na+, Ca++, Mg++, NH4+ and anions: Cl -, Br -, SO4 --, NO3 -, PO4 3-) and compare the results obtained in honeys of different Italian Regions (Lombardy, Piedmont, Sardinia, Calabria, Tuscany) with those from countries of the Western Balkan area (Slovenia, Croatia, Serbia, Kosovo, Macedonia and Albania). In addition the mineral concentrations of the two honeys groups were further analyzed by multivariate statistical techniques such as principal components analysis (PCA) and Hierarchical cluster analysis (HCA). The results provide an exhaustive view of the ionic composition of the different honeys, up to now never reported. The results are also useful for the scrutiny of differences and similarity among honeys allowing a sharp differentiation between flower nectar honeys and arboreal/honeydew honeys and to evidence from one hand possible adulteration with sugars, syrups, etc. and from the other hand blending between different honeys. Furthermore the multivariate analysis allows to demonstrate the potential of honey as bioindicator of industrial and urban pollution (Br-, SO42- and PO43- contents) which show a steep increase in the Western Balkan area. In particular as concerns arboreal honeys the concentrations of SO42- and of PO43- in honeys from Balkan area were triple compared to those present in the Italian ones (SO42-=90.3±60.3 ppm in Balkan honeys with respect to SO42-=29.6±20.8 ppm in Italian honeys and PO43-=772.6±530.3 ppm in Balkan honeys with respect to PO43-=222.0±74.2 ppm in Italian honeys). The same trend, although the differences did not reach the statistical significance (P<0.05), was observed also for floral nectar honeys. Br- was undetectable in almost all the Italian honeys and is presence could be attributed the use of methyl-bhromide for agricultural activity.
Inorganic components in honeys as potential indicators of botanical origin and of anthropogenic environmental pollution / P. Fermo, G. Beretta, A. Piazzalunga, F. Biadigo, R. Maffei Facino. ((Intervento presentato al 23. convegno Congresso Nazionale della Divisione di Chimica Analitica della Società Chimica Italiana tenutosi a Isola d'Elba nel 2012.
Inorganic components in honeys as potential indicators of botanical origin and of anthropogenic environmental pollution
P. FermoPrimo
;G. BerettaSecondo
;R. Maffei FacinoUltimo
2012
Abstract
The aim of this study was to investigate the quali/quantitative profile by IC (Ion Chromatography) technique of the inorganic constituents( cations: Na+, Ca++, Mg++, NH4+ and anions: Cl -, Br -, SO4 --, NO3 -, PO4 3-) and compare the results obtained in honeys of different Italian Regions (Lombardy, Piedmont, Sardinia, Calabria, Tuscany) with those from countries of the Western Balkan area (Slovenia, Croatia, Serbia, Kosovo, Macedonia and Albania). In addition the mineral concentrations of the two honeys groups were further analyzed by multivariate statistical techniques such as principal components analysis (PCA) and Hierarchical cluster analysis (HCA). The results provide an exhaustive view of the ionic composition of the different honeys, up to now never reported. The results are also useful for the scrutiny of differences and similarity among honeys allowing a sharp differentiation between flower nectar honeys and arboreal/honeydew honeys and to evidence from one hand possible adulteration with sugars, syrups, etc. and from the other hand blending between different honeys. Furthermore the multivariate analysis allows to demonstrate the potential of honey as bioindicator of industrial and urban pollution (Br-, SO42- and PO43- contents) which show a steep increase in the Western Balkan area. In particular as concerns arboreal honeys the concentrations of SO42- and of PO43- in honeys from Balkan area were triple compared to those present in the Italian ones (SO42-=90.3±60.3 ppm in Balkan honeys with respect to SO42-=29.6±20.8 ppm in Italian honeys and PO43-=772.6±530.3 ppm in Balkan honeys with respect to PO43-=222.0±74.2 ppm in Italian honeys). The same trend, although the differences did not reach the statistical significance (P<0.05), was observed also for floral nectar honeys. Br- was undetectable in almost all the Italian honeys and is presence could be attributed the use of methyl-bhromide for agricultural activity.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
