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- W2378671389 abstract "The present work describes a new method for trace Co(Ⅱ) preconcentration and separation using microcrystalline phenolphthalein as an adsorbent coupled with the determination of spectrophotometry.Under certain conditions Co(Ⅱ) can completely separated from Ni(Ⅱ),Cd(Ⅱ),Al(Ⅲ),Ca(Ⅱ),Mg(Ⅱ),Pb(Ⅱ),Mn(Ⅱ),Fe(Ⅲ),Bi(Ⅲ) and hardly affected by SO_4~(2-),NO_3~-,Br~-,Cl~-,I~-.The adsorption capacity of microcrystalline phenolphthalein was found to be 23.5 mg/g for Co(Ⅱ).The multiple of the preconcentration can reach 200 times.The recovery of Co(Ⅱ) is beyond 97.6%.The relative standard deviation of standards(RSD) is between 1.1%～2.3%.The proposed method has been applied to the preconcentration and determination of trace Co(Ⅱ) in natural water samples with satisfactory results." @default.
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- W2378671389 date "2006-01-01" @default.
- W2378671389 modified "2023-09-25" @default.
- W2378671389 title "Determination of trace Co(II) by spectrophotometry after preconcentration on microcrystalline phenolphthalein" @default.
- W2378671389 hasPublicationYear "2006" @default.
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