tailieunhanh - INVENTORY OF INFORMATION SOURCES ON CHEMICALS

Most of the VOCs probably derived from indoor sources. However, the wall cavity was an apparent source of acetaldehyde, toluene and xylenes and the belly space was a source of 2-butanone, lower volatility aldehydes and aromatic hydrocarbons. Indoor minus outdoor VOC concentrations varied with time. Adjusted formaldehyde concentrations exhibited the most temporal variability with concentrations ranging from 25 µg m-3 to 128 µg m-3 and the lowest concentrations occurring in winter months when indoor RH was low. A model describing the emissions of formaldehyde from urea-formaldehyde wood products as a function of temperature, RH and. | United Nations UNITED NATIONS ENVIRONMENT PROGRAMME UNEP Inventory of Information Sources on Chemicals Persistent Organic Pollutants Prepared by UNEP Chemicals November 1999 INTER-ORGANIZATION PROGRAMME FOR THE SOUND MANAGEMENT OF CHEMICALS IOMC A cooperative agreement among UNEP ILO FAO WHO UNIDO UNITAR and OECD UNITED NATIONS ENVIRONMENT PROGRAMME INVENTORY OF Information Sources on Chemicals PERSISTENT organic pollutants Prepared by UNEP Chemicals November 1999 Note The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country territory city or area or its authorities or concerning the delimitation of its frontiers or boundaries. Material in this publication may be freely quoted or reprinted but acknowledgement is requested together with a reference to the document number. A copy of the publication containing the quotation or reprint should be sent to UNEP Chemicals. Cover photo credit Ocean UNEP H. J. Hystek TOPHAM This publication is produced within the framework of the Inter-Organization Programme for the Sound Management of Chemicals IOMC . The Inter-Organization Programme for the Sound Management of Chemicals IOMC was established in 1995 by UNEP ILO FAO WHO UNIDO and OECD Participating Organizations following recommendations made by the 1992 UN Conference on Environment and Development to strengthen cooperation and increase coordination in the field of chemical safety. In January 1998 UNITAR formally joined the IOMC as a Participating Organization. The purpose of the IOMC is to promote coordination of the policies and activities pursued by the Participating Organizations jointly or separately to achieve the sound management of chemicals in relation to human health and the environment. Copies of this publication are available from UNEP Chemicals 11-13 chemin des Anémones CH-1219 Châtelaine