フローインジェクション－非対称流れ流動場分離(AF4)法によるナノ粒子個数濃度の定量分析

To determine the number density of fine precipitates in steels by asymmetric flow field-flow fractionation (AF4) with inductively coupled plasma–mass spectrometry (ICP–MS), an analysis method employing injection was investigated. For accurate calibration, matrix matching performed mixing standard solution and AF4 carrier front a nebulizer. Two surfactants were used for separation; it found that appropriate selection based on their acidity constant is essential to avoid salt precipitation. In addition, effect retention time recovery A long led adsorption aggregation samples separation channel. Results showed within 20 min facilitated superior recovery. Moreover, five types AuNPs analyzed via AF4–ICP–MS quantified using analysis. Good analytical performance achieved all recoveries exceeded 93%, coefficient variation 5%. The particle size not confirmed.