RT null T1 Bi‐ennial Global Interlaboratory Assessment on POPs – Round 4: Appendix II. Original Data A1 United Nations Environment Programme, K1 persistent organic pollutant YR 2021 FD 2021 LK https://wedocs.unep.org/handle/20.500.11822/36738 UL https://wedocs.unep.org/handle/20.500.11822/36738 NO Appendix II Original data pesticides DS UN Environment Document Repository RD Sep 21, 2026