title: A practical and nontarnishing method for the analysis of trace nickel in hydrogenated cottonseed oil by inductively coupled plasma/mass spectrometry with pressurized PTFE vessel acid digestion.
authors.affiliation: Northwest Geological Research Institute for Nonferrous Metals, Xi Ying Rd, No. 25, Xi'an 710054, People's Republic of China. nzhang316@yahoo.com
authors.forename: Ni
authors.initials: N
authors.lastname: Zhang
authors.forename: Zhiying
authors.initials: Z
authors.lastname: Ding
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Shao