Determination of trace elements in goat and ovine milk from Calabria (Italy) by ICP-AES

Abstract

There are many sources of contamination to which milk could be exposed: grazing animals can ingest contaminants present in nature, such as lead in soil, or that have been deposited on grass, resulting from industrial emissions. Another possible route of contamination is represented by feed for animals, which may contain heavy and essential metals. The potential of high-resolution inductively coupled plasma spectrometry was evaluated to quantify reliably various toxic and essential elements (Fe, Zn, Pb, Cr, Ni, Cu, As, Se, Cd) in 47 samples of goat and ovine milk from various farms in Calabria (southern Italy). The results showed that concentrations of cadmium were below the limit of detection. Lead levels were below the maximum limits as set by the EC in almost all samples tested. The highest values were those of Zn followed by Fe, Cu and Se.

Analysis of 17 elements in cow, goat, buffalo, yak, and camel milk by inductively coupled plasma mass spectrometry (ICP-MS)

“…In our study, Zn concentrations were similar to those previously reported in camel, cow, buffalo, and yak milk (1.24-6.2 mg g À1 ). [22][23][24][25] Our values, however, were lower than the reported in goat milk (11.31 mg g À1 ) by Licata et al The concentration of Al ranged from 0.277 to 0.397 mg g À1 in our study, while Al was not detected in Osorio's study. The concentrations of Cu, Mn, and Mg were in agreement with those reported in the literature.…”

Large scale study of the within and between spatial variability of lead, arsenic, and cadmium contamination of cow milk in China

“…Minerals are considered essential elements. For instance, calcium, copper, and selenium are essential minerals for normal human body functions, as they are involved in many physiological processes (Alasalvara et al, 2002;Licata et al, 2012). However, heavy metals such as lead (Pb), arsenic (As), and cadmium (Cd) may also be found in milk (Swarup et al, 2005;Shailaja et al, 2014).…”

Determination of some metals in the commonly consumed dairy products randomly collected from the market in Alexandria - Egypt, with an emphasis on toxicity, permissible limits and risk assessment

“…After cooling, the resulting solutions were evaporated to semidried mass to remove an excess acid, and then diluted up to 50.0 mL in volumetric flasks and kept as a stock sample solution, and were analysed using methodology given by Jalbani N. et al in 2009. (17) …”

“…(Caggiano R et al 2005, Tuzen M et al 2008) Cu, Zn and Se are essential metals for normal function of our body, however, from the toxicological point of view, their intake in higher amounts above safe recommended levels may be risky to the human health. (Licata P et al 2012) It is well-known that the Cd and Pb have the greatest injurious effects on renal tissue and nervous system, respectively. (Neal AP and Guilarte TR 2013) Contamination of dairy products with Aluminum may result from the environment, but the concentration of this element increases notably with processing, packaging and food additives.…”