Extraction-Atomic-Absorption Determination of Gallium (III) with 2-hydroxy-5-T-butylphenol-4’-methoxy-azobenzene

• 作者: Zumrud A. Mamedova
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 化学
• 关键词: GALLIUM COMPLEXING Atomic Absorption Method Extraction Gallium in Soil
• 年，卷（期）: 2020,（9）
• 页码范围: 24-30
• 页数: 7页
• 分类号: O62

摘要

The complexation of gallium with 2-hydroxy-5-T-butylphenol-4’-methoxy-azobenzene (HR) has been studied by atomic absorption and spectrophotometric methods. The optimal conditions for the formation and extraction of the complex were found. The maximum light absorption of the complex in n-butanol is in the range of 450 - 470 nm. The molar absorption coefficient is (3.3 - 4.2)<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8901;</span></span>10⁴. The stability constant of the gallium coordination compound in n-butanol is <em>β</em>_l = 4.2<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8901;</span></span>10¹⁰. The developed technique allows to determine the gallium content within n × 10^{<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>1} - n × 10^{<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>4}%. The selective and sensitive technique for the extraction-atomic absorption determination of gallium in soils has been developed.