Hydrolysis sampling method and device of nickel tetratrifluorophosphine

The invention discloses a hydrolysis sampling method and a hydrolysis sampling device for nickel tetratrifluorophosphine. The method comprises the following steps: i) connecting components and detecting air tightness; (ii) injecting concentrated nitric acid into the sampling device; (iii) nitration conversion of nickel tetratrifluorophosphine and the like. The device comprises a vacuum container connected with a sample bottle through a pipeline and a valve I, the vacuum container is connected with a sampling device through a pipeline and a valve II, and the sampling device is arranged in a freezing container. In the normal operation state of the system, a gaseous sample is converted into a liquid ion form, so that the problem that abundance analysis cannot be carried out on gas with large molecular weight through a mass spectrometer is avoided, and meanwhile, the problems of environmental pollution and personal safety caused by extremely toxic PF3 possibly generated after the gaseous sample enters the mass sp