Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand.
Anal Bioanal Chem. 2010 Apr;396(8):3079-85. doi: 10.1007/s00216-010-3511-4. Epub 2010 Feb 23.
Flow field-flow fractionation (FlFFF) was used for size characterization of gold nanoparticles. The measured particle sizes obtained from FlFFF for the commercial 10 nm gold nanoparticle standard and the gold nanoparticles synthesized in the laboratory were in good agreement with those measured by transmission electron microscopy (TEM). Further, the capability of alpha-tocopherol to induce enlargement of gold nanoparticles by catalysis of the reduction of AuCl(4)(-) by citrate was observed by monitoring the changes in particle size of gold nanoparticles using FlFFF. The effects of alpha-tocopherol and incubation time on enlargement of the gold nanoparticles were examined. Higher concentrations of alpha-tocopherol resulted in larger nanoparticles. At fixed alpha-tocopherol concentration, larger nanoparticles were formed at longer incubation times.
流场分级（FlFFF）用于金纳米粒子的粒径表征。FlFFF 测量的商业 10nm 金纳米粒子标准品和实验室合成的金纳米粒子的粒径与透射电子显微镜（TEM）测量的结果非常吻合。此外，通过 FlFFF 监测金纳米粒子粒径的变化，观察到α-生育酚通过柠檬酸催化还原 AuCl（4）（-）来诱导金纳米粒子增大的能力。考察了α-生育酚和孵育时间对金纳米粒子增大的影响。较高浓度的α-生育酚导致较大的纳米粒子。在固定的α-生育酚浓度下，较长的孵育时间会形成较大的纳米粒子。
J Chromatogr A. 2011-1-14
J Chromatogr A. 2009-8-14
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