Abstract:

The factors，such as pretreatment，wavelength，chromogenic time，pH，disruptors，etc. that have effects on the determination of aluminum in printing and dyeing wastewater by chrome azurol S spectrophotometry are discussed and optimized. The precision and accuracy after the optimization are studied. The results show that the relative standard deviation （RSD） is 2.9%-6.7%，and the recovery ratio is 96.0%-108%，suitable for the determination of aluminum content in printing & dyeing wastewater.

Key words: spectrophotometry, printing and dyeing wastewater, aluminum content

摘要：

对铬天青S分光光度法测定印染废水中铝的影响因素(前处理、波长、显色时间、pH、干扰物等)进行了探讨与优化,并对优化后方法的精密度与准确度进行了研究。结果表明,方法的相对标准偏差为2.9%～6.7%,样品加标回收率为96.0%～108%,适用于印染废水中铝含量的测定。

关键词: 分光光度法, 印染废水, 铝含量

CLC Number: 

• O657.32