The team of fruit quality safety control technical is committed to developing multifunctional nanomaterials from biomass carbon sources. This team used kiwi as biomass carbon sources to synthesize a new fluorescent nanomaterials (KF-CDs) that have the great potential in the sensitive detected of Fe3+. From the fluorescence interference experiment, it was obviously quenched by Fe3+ within seconds, and have a good linear relationship between 1-33.8 μmol/L, the linear equation was y=0.9546+0.0689x (R=0.996), and the detection limit was 0.097 μmol/L. The WHO stipulated that Fe3+ in drinking water should not exceed 0.3mg/L (∼5.36 μmol/L).

This work was supported by the Agricultural Science and Technology Innovation Program (Grant CAAS-ASTIP-2019-ZFRI-10) and by the Central Public-interest Scientific Institution Basal Research Fund (No.1610192020107).

Schematic of the synthesis of nanomaterials from kiwi and its applications in Fe3+ sensing

By Wang Caixia (wangcaixia@caas.cn)