摘要
本文研究了TritonX一100存在下,铁(Ⅱ)与1-(2-吡啶偶氮)-2-萘酚(PAN)的显色反应,在PH值3.0~9.0范围内,配合物的最大吸收波长为740nm,表现摩尔吸光系数ε=1.6×10 ̄4L·mol ̄(-1)·cm ̄(-1),铁量在0~80ug/25ml范围内遵守比耳定律。该法用于纯铝、铝合金、铝基稀土合金中微量铁的测定,结果准确。
This paper studies the developed reaction between Fe(Ⅱ) ana 1-(2 pyrine azo )-2-naphthol (PAN)nnder existence of Tritonx-100.When the PH value is within the limite of 3.0-9.0.the max.absorption wave length of composite is 740mm,apparent Mole absorptivity εis 1.6×10 ̄4L· mol ̄(-1)· cm ̄(-1)and Fe content is 0.80μg/25ml. the developed reaction will abide by beer'’s law.The determining result used by this method is accurate to determine micro Fe in pnre aluminium, aluminium alloy and rare earth alloy of aluminium base.
出处
《山东冶金》
1994年第3期11-14,共4页
Shandong Metallurgy