Abstract：Soil is decomposed by sodium carbonate and zinc oxide，extracted by water. Rh as the internal standard，bromide and iodide are determined by ICP-MS after adsorbed on cation exchange resin. Under optimal working conditions，when the range of bromide and iodide is 0～5.0 μg•g-1，the correlation coefficient of the working curve are 0.999 1 and 0.999 8，the detection limits for bromide and iodide are 0.166 μg•g-1 and 0.051 μg•g-1. The accuracy and precision of this method have been verified by a series soil CRM，the RSD of bromide and iodide are 2.83%～9.45% and 2.14%～9.87%. The pretreatment of this method is efficient and convenient，meanwhile，the detection limits，accuracy and precision are up to the standard，this method is suitable for the detection of large quantities of geochemical sample.
2020, Vol. 37 
