AN EVALUATION OF THE OCCUPATIONAL-HEALTH AND SAFETY ADMINISTRATION METHOD FOR THE DETERMINATION OF CHLORINE DIOXIDE IN WORKPLACE ATMOSPHERE

Findings of a study to evaluate the Occupational Safety and Health Adm inistration (OSHA) ion chromatography Method 202 for chlorine dioxide are presented. The OSHA method was chosen for in-depth evaluation beca use it appeared to offer specificity and sensitivity in the presence o f chlorine gas. This study critically evaluates the effects of chlorin e, sulfur dioxide, and the pH of the collection solution as related to the recovery of chlorine dioxide as the chlorite ion. Results show th at the buffer pH should be maintained above pH 9.5 and chlorine concen tration below 20 mu g.