RT Report T1 Guidelines for the Determination of Selected Trace Metals in Aerosols and in Wet Precipitation: Reference Methods for Marine Pollution Studies No. 42 A1 United Nations Environment Programme, A1 World Health Organization, A1 International Atomic Energy Agency, K1 aerosol K1 precipitation K1 marine pollution K1 metal PB United Nations Environment Programme YR 1988 FD 1988-10 LK https://wedocs.unep.org/handle/20.500.11822/13610 UL https://wedocs.unep.org/handle/20.500.11822/13610 NO This publication describes sampling and analytical procedures suitable for the collection and analysis of representative samples of atmospheric aerosols and wet precipitation for selected trace metals. NO https://www.unep.org/regionalseas/ DS UN Environment Document Repository RD Sep 24, 2026