title: [Determination of zinc in mineral by FAAS after phase separation and extraction].
abstract: Non-ion surface active agent can be separated from its solution of water by heating to its cloud point. A new method for the determination of zinc in mineral samples by flame atomic absorption spectrophotometer after phase separation and extraction making use of its cloud point was studied in this paper. The conditions of phase separation and extraction such as using Triton X-100 as phase separation agent, and octanol to drop the cloud point, and the influence of acidity and the number of times for oscillating were discussed. The detection limit was 0.005 microg x mL(-1). This method has been applied to the determination of zinc in ores with satisfactory results.
authors.affiliation: College of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Yang
authors.forename: Hong-yin
authors.initials: HY
authors.lastname: Han
authors.forename: Wen-wu
authors.initials: WW
authors.lastname: Chen
authors.forename: Xin-hua
authors.initials: XH
authors.lastname: Zhang
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Tang
authors.forename: Ze-xiang
authors.initials: ZX
authors.lastname: Jin
mesh_terms: D044367:Phase Transition; D052616:Solid Phase Extraction / Q000379:methods*; D013501:Surface-Active Agents / Q000032:analysis; D014867:Water / Q000737:chemistry; D015032:Zinc / Q000032:analysis*
chemical_list: D013501:Surface-Active Agents; D014867:Water; D015032:Zinc