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4241454 
Journal Article 
Heavy metals in cow's milk and cheese produced in areas irrigated with waste water in Puebla, Mexico 
Castro-González, NP; Calderón-Sánchez, F; Castro de Jesús, J; Moreno-Rojas, R; Tamariz-Flores, JV; Pérez-Sato, M; Soní-Guillermo, E 
2018 
Yes 
Food Additives and Contaminants: Part B: Surveillance
ISSN: 1939-3210
EISSN: 1939-3229 
11 
1 
33-36 
English 
29086632 
WOS:000424484100006 
The aim of this work was to determine Ni, Cr, Cu, Zn, Pb, and As levels in raw milk and Oaxaca and ranchero type cheeses, produced in areas irrigated with waste water from Puebla in Mexico. Milk results showed a mean Pb level of 0.03 mg kg-1, which is above the maximum limit as set by Codex Alimentarius and the European Commission standards. For As a mean value of 0.12 mg kg-1in milk was obtained. Mean As and Pb levels in milk were below the Mexican standard. Milk whey and ranchero cheese had mean Pb levels of 0.07 and 0.11 mg kg-1, respectively. As was higher in Oaxaca and ranchero cheese at 0.17 and 0.16 mg kg-1, respectively. It was concluded that cheeses made from cow's milk from areas irrigated with waste water are contaminated with Pb and As, which may represent a health risk.