Abstract:

Over 20 precipitation samples at Point Barrow,Alaska in Aug. and Sep. of 1994 was analysised.The pH value is between 4.76-6.26,of which higher in summer than in winter.The electic conductivities in precipitation is rather low,varing between 4.9-102.0 μS/cm,and the abnormal high values are concerned with the sea salt.The chemical composition of precipitation at Point Barrow,Alaska have equal level to that at the other Arctic regions and on the Qinghai Xizang Plateau.The extremely low value of exSO 2- 4 indicates that the anthropogenic effect on this region is small.Point Barrow is one of the most suitable places for studying the Arctic environment conditions.