摘要
根据磷酸根在酸性介质中能与沉淀剂喹钼柠酮形成沉淀的原理，采用加盐酸和少量水使颜料中间体多聚磷酸全部水解转化成正磷酸，然后用喹钼柠酮重量法测定、计算。该法准确度、精确度高而且简便。
In acid medium, phosphoric acid radicals will form precipitant with QMCA. Based on this principle, by adding small ammount of water and hydrochloric acid, the remaining part of pigment intermediate-polyphosphoric acid is made hydrolysed and transformed into n-phosphoric acid. Then determination and calculation are performed by QMCA weight method. Since this method is high in accuracy and precision as well as easy to operate, it has become a rapid method for determination of intermidiate polyphosphoric acid in production of pigments.
出处
《印染助剂》
CAS
北大核心
2000年第1期34-35,共2页
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