作者
ML Akele, DZ Abebe, AK Alemu, AG Assefa, A Madhusudhan, RR de Oliveira
发表日期
2017/10/1
期刊
Environmental monitoring and assessment
卷号
189
期号
10
页码范围
499
出版商
Springer International Publishing
简介
Concentrations of essential (Cu, Mn, and Zn) and toxic (Cr, Cd, and Pb) trace metals in 30 raw cow’s milk samples were quantified using flame atomic absorption spectrometry. The samples were collected from the Nara-Awudarda, Tana-Abo, and Kosoye Amba-Rass sites in North Gondar, Ethiopia, preserved in a deep freezer (−20 °C), and then digested by Kjeldahl apparatus with HNO3/H2O2 (5:2; v/v) at 300 °C for 2.5 h. The data were subject to principal component analysis (PCA) and partial least square–discriminant analysis (PLS-DA). Overall hazard quotient (HQ) and carcinogenic risk (CR) values were also estimated to assess metal-related health risks. The mean concentrations of Cr, Mn, Cu, Zn, Cd, and Pb in the milk samples ranged 0.468–0.828, 1.614–2.806, 0.840–1.532, 1.208–5.267, ND–0.330, and ND–0.186 mg/kg, respectively. The lowest values were obtained for Kosoye Amba-Rass milk …
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