CERTIFICATION OF REFERENCE MATERIALS RELATED TO THE MONITORING OF ALDEHYDES IN AIR BY DERIVATIZATION WITH 2,4-DINITROPHENYLHYDRAZINE

Reference materials related to the monitoring of aldehydes in air by d erivatization with 2,4-dinitrophenylhydrazine (DNPH) and subsequent de termination of the hydrazone by HPLC were prepared and certified, The materials are the solid hydrazones of formaldehyde (CRM 546), acetalde hyde (CRM 547), acrolein (CRM 548); acetone (CRM 549); and glutaraldeh yde (CRM 550); a mixture of the hydrazones of formaldehyde, acetaldehy de, acrolein and acetone in acetonitrile with excess DNPH (CRM 551); a blank solution of DNPH in acetonitrile (CRM 552); formaldehyde hydraz one on a glass-fibre filter impregnated with DNPH (CRM 553); and a bla nk filter impregnated with DNPH (CRM 554). The materials were found to be homogeneous and stable, These Community Bureau of Reference (BCR) Certified Reference Materials (CRMs) are recommended for quality contr ol and for calibration purposes.