Method for rapidly determining iodine content in soil sample

The invention relates to a method for rapidly determining the iodine content in a soil sample, and belongs to the technical field of soil iodine content detection.The method comprises the specific treatment steps that a soil sample to be detected is weighed, a potassium hydroxide melting agent is added, then the soil sample is put into a platinum crucible, and then the platinum crucible is put into a muffle furnace to be subjected to melting treatment; extracting the molten sample with water, heating to dissolve frits, and fixing the volume; separating the solution, adding a tetraphenylboronic acid solution, and centrifuging to obtain supernate as to-be-detected clear liquid; and measuring the iodine concentration of the clear liquid to be measured by using inductively coupled plasma mass spectrometry, and calculating the iodine content in the soil sample. According to the method disclosed by the invention, the problem of matrix effect caused by cations in the test solution can be perfectly solved while the i