介绍了乳胶漆的实验原理，探讨了影响甲醛萃取率的主要因素，得出适用于乳胶漆中游离甲醛的测定方法。
This article introduces experiment principle, main factors influencing on the extraction yield of formaldehyde and methods suitable for testing free formaldehyde in latex.
考察了水相介质，共存离子、萃取装置、相比等因素的影响。
The influence of aqueous medium, coexisted ions, extraction device as well as phase ratio has been investigated.
结果表明，表面活性剂含量，制乳和萃取过程中的搅拌速率是主要影响因素；
The results showed that surfactant concentration, stirring speed during emusifying and extracting(MS and ES)can effect the stability.
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