Technical Bulletin No. 0479: Laboratory Evaluation of N-Benzylethanolamine and J-Acid Sorbent Tubes for the Measurement of Formaldehyde in Air

This technical bulletin is a report on laboratory evaluation of two commercially available solid sorbent tube methods for determination of formaldehyde in workspace and ambient environments. The methods were evaluated for accuracy, precision, effect of exposure conditions on recovery, storage stability of collected samples and potential interference by compounds of interest to the forest products industry. The methods studied were (a) benzylethanolamine (BEA) coated tubes (3-BOZA method) and (b) J-acid coated tubes.