2012•Journal of Qiqihar UniversityRequires access

Determination of zinc in human hair by spectrophotometry

Yu Rong Yan

Abstract

The spetrophotometry analytical method of zinc was developed based on the colour reaction of Zn-PAR system in the presence of β-cyclodextrin and TritonX-100.The maximum absorbance is at 505nm with apparent molar absorption of 5.32×104L mol-1 cm-1.The beer,s law is obeyed in the range of 0-480 μg/L.The regression equation of calibration is y=0.02931x+0.0076,R2=0.9963.The proposed method was used to determine the trace zinc in human hair with satisfactory results.

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Key concepts: Zinc, Absorbance, Spectrophotometry, Beer–Lambert law, Calibration curve, Analytical Chemistry (journal), Atomic absorption spectroscopy, TRACE (psycholinguistics)