纳米金材料有着特殊的表面效应、量子尺寸效应和宏观量子隧道效应,在电学、磁学、光学和化学性质方面具有常规材料不具备的优越性能。综述了纳米金的制作方法,以及纳米金光学方法和电化学方法应用于生物检测和各种气体、液体检测等方面的研究进展。 Nano-gold materials have special surface effect, quantum size effect and macroscopic quantum tunneling effect. They have the superior properties that the conventional materials do not have in electrical, magnetic, optical and chemical properties. The preparation methods of nano-gold, as well as the research progress of nano-Au optical and electrochemical methods for bioassay, gas detection and liquid detection are reviewed.