paper was prepared to provide an overview of analytical activities concerning air pollution in the years of 1969 and 1970. It avoids overlapping the previous analogous review [Altshuller, A. P., Anal. Chem., 41, 1R, (1969)]. As a practical matter, most of the papers included were dated in the period June 1968 to August 1970. In most cases we had to rely on abstracts. Papers readily available to us but published after August 1970 were also included.A review such as this, is intended primarily to collate and to provide perspective on what has been published. We have found previous reviews useful not only at the time of publication but also years afterward. A review largely restricted to the information published cannot be relied upon to include the more recent advances in a rapidly progressing field.