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2011•Trace Elements ScienceRequires access

Determination of Zinc in Tea Through Highly Sensitive Spectrophotometric System

Chun-Niu Zhang

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Abstract

A new spectrophotometric method for the determination of zinc in tea by using Zn2+-SCN——RhB-PVA highly sensitive chromogenic reaction system was studied.The results show that the strongest absorption peak of ion complex is at 605 nm and the molar absorption coefficient is 1.59×106L mol-1 cm-1.When the zinc concentration is in the range of 0.0~0.04 μg/mL,which accords with lambert beer's law.Favorable results can be achieved with this method.

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What this paper is about

A new spectrophotometric method for the determination of zinc in tea by using Zn2+-SCN——RhB-PVA highly sensitive chromogenic reaction system was studied.The results show that the strongest absorption peak of ion complex is at 605 nm and the molar absorption coefficient is 1.59×106L mol-1 cm-1.When the zinc concentration is in the range of 0.0~0.04 μg/mL,which accords with lambert beer's law.Favorable results can be achieved with this method.

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Available abstract

A new spectrophotometric method for the determination of zinc in tea by using Zn2+-SCN——RhB-PVA highly sensitive chromogenic reaction system was studied.The results show that the strongest absorption peak of ion complex is at 605 nm and the molar absorption coefficient is 1.59×106L mol-1 cm-1.When the zinc concentration is in the range of 0.0~0.04 μg/mL,which accords with lambert beer's law.Favorable results can be achieved with this method.

Key concepts: Chromogenic, Zinc, Beer–Lambert law, Chemistry, Molar absorptivity, Absorption (acoustics), Spectrophotometry, Analytical Chemistry (journal)

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