Phosphine detector

Abstract

The invention proposes a phosphin detector (1) comprising a support body (10), and a phosphin detection layer (20) supported on the surface of the support body (10) and comprising numerous basic copper carbonate particles, numerous cellulose fibers, and a binder that binds numerous basic copper carbonate particles and numerous cellulose fibers together, wherein the average particle diameter of these basic copper carbonate particles is between 0.01 μm and 1 μm, and the average length of these cellulose fibers is between 5 μm and 30 μm, the average particle diameter of this binder is between 80 μm and 1 μm, and the average fiber diameter of these cellulose fibers is greater than the average particle diameter of the binder.