SNOW pH AND DUST LOADING AT SCHEFFERVILLE, QUEBEC

Problems of acid precipitation in association with industrial activity in areas such as the Great Lakes region are now well‐known (e.g. Hornbeck et al., 1977), and the Canadian Network for Sampling Precipitation (CANSAP) has established monitoring stations across Canada. In communities in northern Canada, however, especially in winter, a considerable amount of SO 2 is liberated locally. It is therefore important to be able to separate local …