title: Analysis of 22 Elements in Milk, Feed, and Water of Dairy Cow, Goat, and Buffalo from Different Regions of China.
abstract: The objectives of this study were to measure the concentrations of elements in raw milk by inductively coupled plasma-mass spectrometry (ICP-MS) and evaluate differences in element concentrations among animal species and regions of China. Furthermore, drinking water and feed samples were analyzed to investigate whether the element concentrations in raw milk are correlated with those in water and feed. All samples were analyzed by ICP-MS following microwave-assisted acid digestion. The mean recovery of the elements was 98.7 % from milk, 103.7 % from water, and 93.3 % from a certified reference material (cabbage). Principal component analysis results revealed that element concentrations differed among animal species and regions. Correlation analysis showed that trace elements Mn, Fe, Ni, Ga, Se, Sr, Cs, U in water and Co, Ni, Cu, Se, U in feed were significantly correlated with those in milk (p < 0.05). Toxic and potential toxic elements Cr, As, Cd, Tl, Pb in water and Al, Cr, As, Hg, Tl in feed were significantly correlated with those in milk (p < 0.05). Results of correlation analysis revealed that elements in water and feed might contribute to the elements in milk.
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
authors.forename: Xuewei
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
authors.forename: Xueyin
authors.initials: X
authors.lastname: Qu
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
authors.forename: Shengguo
authors.initials: S
authors.lastname: Zhao
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Wang
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
authors.forename: Songli
authors.initials: S
authors.lastname: Li
authors.affiliation: Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China. zhengnan_1980@126.com.|State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China. zhengnan_1980@126.com.
authors.forename: Nan
authors.initials: N
authors.lastname: Zheng
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002020:Buffaloes; D002417:Cattle; D002681:China; D003612:Dairying; D005260:Female; D006041:Goats; D013058:Mass Spectrometry / Q000379:methods; D008892:Milk / Q000737:chemistry*; D025341:Principal Component Analysis; D013045:Species Specificity; D014131:Trace Elements / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D014131:Trace Elements; D014867:Water
keywords: Buffalo; Cow; Goat; ICP-MS; Milk; Trace elements