The relationship between acid loading and lake pH or alkalinity response is exceedingly difficult to quantifya priori. One method is obviously the comparison of data taken in the 1920#x2032;s or 1930#x2032;s. Changing analytical methods, however, dictates that older data must be examined in detail. In this work we briefly review chemical principles that should be applied when #x201C;redundant#x201D; data is available, that is, pH, alkalinity, and acidity. These techniques are applied to water quality data collected during 1925#x2013;1941 for low conductivity lakes in northern Wisconsin, U.S.A. The magnitude of corrections is also discussed.
展开▼
