摘要
Underwater superoleophobic-oleophilic chips were developed to achieve oil extracting from aqueous solution and oil-droplet con-densing to preset microwell.The double-hierarchical(extracting-condensing)enrichment strategy drastically improves the sensitivi-ty for organic contaminants or components,whose signal amplification approaches 459.7 times that of primary solution and 25.9 times that of single condensing enrichment strategy.Low to femtomolar limit of detection(2.6×10^(-15)mol/L)sensitivity and 6 vari-ous aflatoxins or mildewed foods identification demonstrate the significance and promotion for environment monitoring,water pu-rification,and so on.
基金
the National Natural Science Foundation of China(Nos.22090050,22090052,22176180,21874121,51803194,41807201,21874056,52003103,21974128)
the National Key R&D Program of China(Nos.2016YFC1100502,2018YFE0206900)
the Characteristic Innovation Projects of Guangdong Province for University(No.2018GKTSCX004)
the Key Projects in Basic and Applied Research of Jjiangmen(Grant No.[2019]256)
Zhejiang Provincial Natural Science Foundation of China under Grant No.LY20B050002 andNo.LD21B050001.
