Takdanai Techarang and Atitaya Siripinyanond*

The types of carrier liquid including ionic, nonionic and surfactant carrier liquid with DC applied field to improve effective field in normal electrical field-flow fractionation (ElFFF) for separation of nanoparticles were examined. The use of higher applied voltage did not necessarily provide higher effective field. This work shows that using Triton X-100 carrier liquid was effective for nanoparticle separation in ElFFF, suggesting the possibility of using FlFFF prior to ElFFF so that the size and surface charge of nanoparticles can be determined.

Thanks are due to the Thailand Research Fund (TRF) through the Royal Golden Jubilee (RGJ) Ph.D. Program (Grant No. PHD/0110/2557) for providing scholarship to TT and also to TRF and Mahidol University for providing the research grant under grant number BRG 6180006. The support from Center of Excellence for Innovation in Chemistry (PERCH-CIC) is gratefully acknowledged. This work is related to the SDGs 4 (Quality Education).