查看文章

It is well known that breast milk, due to its nutritional qualities, is the ideal and irreplaceable food for newborns and infants during the first six months of life. However, there are multiple environmental factors such as the presence of metals from various sources, which can come into contact with the infant through human milk and affect its health. Because the contamination that exists today in the metropolitan area of Guadalajara is alarming, through the quantitative technique of Mass Spectrometry with Inductively Coupled Plasma Source (ICP-MS), an analysis was carried out with human milk (15-50 mL) donated by 30 women from the Guadalajara metropolitan area. The concentrations found in the samples analyzed show levels of lead, cadmium and arsenic of less than 0.01 µg/mL. It was observed that some components such as Na, Mg, K and Ca showed variations, the Na: K ratio was high in all cases. Not having established reference values for these metals in breast milk that can be used internationally means that a lot of variation is found between results and these cannot be compared with each other. It is concluded that the milk analyzed in this study, in terms of the presence of metals, is safe to be consumed by infants.