2000•Analytical LaboratoryRequires access

Study on Four component Chromogenic Reaction System of Zinc(II)5 BrSAF tartrate CTMAB and Its Analytical Application

Hong Ma

Abstract

In the presence of CTMAB and sodium tartrate,zinc(Ⅱ) reacts with 5 bromosalicyl fluorone(5 BrSAF) in alkaline solution to form a rose colored four component complex with absorption maximum at 560 nm,and the molar absorptivity is 1.08×10 5 L·mol -1 ·cm -1 .The molar ratio (Zn∶5 BrSAF∶CTMAB∶sodium tartrate) is 1∶2∶3∶4.Beer's law is obeyed in the concentration range for zinc(Ⅱ) of 0～10 μg/25 mL.The proposed method is sensitive and selective,and was applied to the determination of microamounts of zinc(Ⅱ) in water and medicine with satisfactory results

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Key concepts: Chemistry, Molar absorptivity, Chromogenic, Zinc, Tartrate, Spectrophotometry, Absorption (acoustics), Nuclear chemistry