2007•Journal of Zhejiang Normal UniversityRequires access

Absorptiophotometric determination of iron in food using 1-(2-thiazolylazo)-2-naphthol-OP system

Keming Fang

Abstract

In the presence of nonionic surfactant OP,the color reaction of Fe(Ⅱ) with 1-(2-Thiazolylazo)-2-naphthol was studied.The results showed that the maximum absorption of Fe(Ⅱ)-TAN-OP complex was at 788 nm in pH=6.0 NaAc-HAc buffer solution.The apparent molar absorptivity of this chelate is 1.82×104 L·mol-1·cm-1.Beer′s law was obeyed in range of 0.08～0.8 μg/mL for Fe(Ⅱ).The linear equation was A=0.001 9+0.304 9 x,R=0.999 7.The method was applied to the determination of Fe(Ⅱ) in food with satisfactory results.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Molar absorptivity, Pulmonary surfactant, Chemistry, 2-Naphthol, Chelation, Absorption (acoustics), Buffer solution, Linear relationship