摘要
运用分光光度法，以孔雀绿～钼酸铵作显色剂，聚乙烯醇为稳定剂，测定洗衣粉和液体洗涤剂的磷含量。考察了显色剂用量、显色温度、时间、硫酸用量以及稳定剂用量等实验条件。对15种市售洗衣粉和4种液体洗涤剂的含磷量进行检测。结果表明，被检测洗衣粉的含磷量在0～5．963％之间，在国家规定的范围内，但被测样品中仍有73．3％的洗衣粉为含磷洗衣粉，57．9％的合成洗涤剂为含磷洗涤剂，不符合广东省全面“禁磷”的规定。
The content of phosphorus in laundry powder and liquid detergent were detected by the spectrophotometric method, taking the malachite green-ammonium and molybdate as the chromogenic reagent and using the polyvinyl alcohol as the stabilizeisr. The factors such as the proper wavelength, the amount of chromogenic reagent and sulfuric acid, time and temperature were researched. According to the research samples of 15 kinds of laundry powder and 4 kinds of liquid detergent, the content of phosphorus in 73.3 % of laundry powders was more than 1.1%, and 57.9 % of synthetic detergents, which did not conform to the stipulation of ＂the phosphorus endures＂ comprehensive in Guangdong Province.
出处
《广州化工》
CAS
2007年第2期37-38,60,共3页
GuangZhou Chemical Industry
关键词
孔雀绿-钼酸铵
分光光度法
合成洗涤剂
磷
malachite-ammonium molybdate
spectrophotography
synthetic detergents
phosphorus
