THE ACCUMULATION OF ARSENIC, BROMINE AND IODINE IN NEEDLES OF NORWAY SPRUCE (PICEA-ABIES [L] KARST) AT SITES WITH LOW POLLUTION

The concentrations of As, Br and I were measured in needles, in the ma terial deposited on the needle surface and in the soil. Results from 8 unpolluted and one polluted continental sites and from one maritime s ite are reported. The mass of all 3 elements on the needle surface is similar to that in the needles. Needle concentrations increase linearl y with the needle age class, but net accumulation during the first yea r is larger than during later years. There are significant correlation s between the material on the needle surface and the needle concentrat ions for As and Br, but not between the soil and the needle concentrat ions. Bromine values are much higher at the polluted and at the mariti me site than at the unpolluted sites.