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STUDY ON THE PHOTOMETRY OF THE REACTION SYSTEM OF Ti(IV)-MANNITOL-PV-CTMAB

Wen Zhang

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Abstract

It is reported that in a chloroacetate buffer of pH 3, a multiligand complex is formed among the components Ti(Ⅳ)、 mannitol, pyrocatechol violet and CTMAB in a mole ratio of Ti(Ⅳ)∶Mannitol∶PV∶ CTMAB =1∶1∶2∶2, in which mannitol acts as the second ligand. The absorption maxima of this complex lies at 730nm with a molar absorptivity of 7.2×10 4L·cm -1 ·mol -1 . Beer′s law holds in the concentration range of 0～20μg of Ti(Ⅳ) in 50ml of solution. By using DTPA Ni as masking agent, the proposed method has been applied to the determination of titanium in chromium nickel steels.

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What this paper is about

It is reported that in a chloroacetate buffer of pH 3, a multiligand complex is formed among the components Ti(Ⅳ)、 mannitol, pyrocatechol violet and CTMAB in a mole ratio of Ti(Ⅳ)∶Mannitol∶PV∶ CTMAB =1∶1∶2∶2, in which mannitol acts as the second ligand. The absorption maxima of this complex lies at 730nm with a molar absorptivity of 7.2×10 4L·cm -1 ·mol -1 . Beer′s law holds in the concentration range of 0～20μg of Ti(Ⅳ) in 50ml of solution. By using DTPA Ni as masking agent, the proposed method has been applied to the determination of titanium in chromium nickel steels.

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Available abstract

It is reported that in a chloroacetate buffer of pH 3, a multiligand complex is formed among the components Ti(Ⅳ)、 mannitol, pyrocatechol violet and CTMAB in a mole ratio of Ti(Ⅳ)∶Mannitol∶PV∶ CTMAB =1∶1∶2∶2, in which mannitol acts as the second ligand. The absorption maxima of this complex lies at 730nm with a molar absorptivity of 7.2×10 4L·cm -1 ·mol -1 . Beer′s law holds in the concentration range of 0～20μg of Ti(Ⅳ) in 50ml of solution. By using DTPA Ni as masking agent, the proposed method has been applied to the determination of titanium in chromium nickel steels.

Key concepts: Mannitol, Molar absorptivity, Chemistry, Photometry (optics), Chromium, Masking agent, Nuclear chemistry, Spectrophotometry

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