在有无超声辅助的连续CFF过程中收集了不同浓度阶段的GO样品稀释500倍,随后4000 rpm离心15 min,取上清液进行UV测试
In the continuous CFF process with or without ultrasonic assistance, GO samples at different concentration stages were collected and diluted 500 times, followed by centrifugation at 4000 rpm for 15 min, and the supernatant was taken for UV testing