title: Analysis of minor and trace elements in milk and yogurts by inductively coupled plasma-mass spectrometry (ICP-MS).
abstract: This study aimed at analysing the content of 22 minor and trace elements in milk and yogurts from South Korea, using inductively coupled plasma-mass spectrometry (ICP-MS), after digestion using heating block. The analytical method was validated by detection limits, precision, accuracy and recovery experiments, obtaining satisfactory results in all cases. Results of both minor and trace elements were found mostly similar in all varieties of milk and yogurts studied. Copper and manganese were comparatively high in fruit mixed yogurts, while selenium was high in milk samples. The overall concentrations of minor elements were found to have good nutritional values in accordance to RDA. Zn showed the highest concentration, followed by Rb, Se, Sr and Cr. The level of toxic trace elements, including As, Cd and Pb were very low and did not pose any threat to consumers.
authors.affiliation: Department of Food and Nutrition, Chosun University, Gwangju 501-759, Republic of Korea.
authors.forename: Naeem
authors.initials: N
authors.lastname: Khan
authors.forename: In Seon
authors.initials: IS
authors.lastname: Jeong
authors.forename: In Min
authors.initials: IM
authors.lastname: Hwang
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Kim
authors.forename: Sung Hwa
authors.initials: SH
authors.lastname: Choi
authors.forename: Eun Yeong
authors.initials: EY
authors.lastname: Nho
authors.forename: Ji Yeon
authors.initials: JY
authors.lastname: Choi
authors.forename: Kyung Su
authors.initials: KS
authors.lastname: Park
authors.forename: Kyong Su
authors.initials: KS
authors.lastname: Kim
mesh_terms: D000818:Animals; D002417:Cattle; D003300:Copper / Q000032:analysis; D008345:Manganese / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods*; D008892:Milk / Q000737:chemistry*; D056910:Republic of Korea; D012643:Selenium / Q000032:analysis; D014131:Trace Elements / Q000032:analysis*; D015014:Yogurt / Q000032:analysis*
chemical_list: D014131:Trace Elements; D008345:Manganese; D003300:Copper; D012643:Selenium
keywords: ICP-MS; Milk; Minor and trace elements; South Korea; Yogurts