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镍的BTAM-DMF-DPC分光光度法测定
A new spectrophotometric method of determination for nickel with 2-benzothiazolylazo-5-dimethylaminophenol (BTAM) in the presence of N-dimethylformamide (DMF) and dodecylpyridinium chloride (DPC)
【摘要】 <正> 环境致癌的研究表明,镍对有机体组织具有一定的渗透力,可使RNA的合成受阻,因此,可能干扰某些基因的复制和细胞分裂的控制,导致细胞恶性转化。1979年国际癌症研究中心将镍的精炼过程确定为是对人类具有致癌性的。镍作为工业污染物存在于煤、石油及其产物的燃烧过程,因此环境分析测镍是需要的。目前,测镍的试剂中含肟官能团的占主要地位,其中丁二酮肟萃取光度法是测镍最常用的方法,但其选择性不好,而灵敏度也仅为ε375CHCI3=3.45×104ι·mol-1·cm-1。经研究
【Abstract】 A new method for the spectrophotometric determination of nickel with BTAM(I) in the presence of DMF and DPC has been developed. Ni forms a violet-red complex with (I) in the presence of DMF and DPC at pH 7.0~8.5; the complex exhibits maximum absorption at 545nm with a molar absorption coefficient ε845nm =1.07× 105l·mol-1·cm-1. Beer’s law is obeyed in the concentration range of 0~1.6μg Ni/10ml. This method has been applied to the determination of Ni in some samples of surface water and waste water.
- 【文献出处】 化学试剂 ,Chemical Reagents , 编辑部邮箱 ,1986年01期
- 【被引频次】7
- 【下载频次】29