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4-(2-Thiazole azo)-6-formyl-resorcinol photometric determination of lead
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[1]LIU Wei,HAN Runping,LIU Zan,et al.4-(2-Thiazole azo)-6-formyl-resorcinol photometric determination of lead[J].Journal of Zhengzhou University (Engineering Science),2005,26(03):12-14.[doi:10.3969/j.issn.1671-6833.2005.03.004]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 26 Number of periods: 2005年03期 Page number: 12-14 Column: Public date: 1900-01-01
Title:
4-(2-Thiazole azo)-6-formyl-resorcinol photometric determination of lead
Author(s):
LIU Wei; HAN Runping; LIU Zan; etc

Keywords:

CLC:
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DOI:
10.3969/j.issn.1671-6833.2005.03.004
Abstract:
The conditions for the chromogenic reaction of the new chromogen 4-(2-thiazoleazo)-6-formyl-resorcinol (TARF) with lead were studied. In the borax-hydrochloric acid buffer solution medium with pH 7.5~8.0, TARF and Pb(II.) formed a stable violet complex with a molar ratio of 1:1, the maximum absorption wavelength was 565 nm, the apparent molar absorbance coefficient was 1.62×104L/(mol·cm), and Pb(II.) complied with Bill’s law in the range of 0~3.2 μg/mL. Under the action of a certain masking agent, the reagent can be used to determine the determination of lead in the standard sample of environmental water quality.

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Last Update: 1900-01-01
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