%0 Dataset %T Long-term lead and mercury concentrations and isotopes dataset for the Arctic environmental media samples from 1968 to 2025 %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/fdad861d-73b8-496b-945a-bcf081624fe9 %W NCDC %R 10.12072/ncdc.arctic-change.db7135.2026 %A Xue Yulu %K Lead;mercury;lead isotopes;mercury isotopes;Arctic %X Lead and mercury concentrations and isotope data are important fundamental indicators for assessing the status of lead and mercury pollution in the Arctic. This study utilized Web of Science to retrieve and screen high-quality data on lead and mercury concentrations and isotopic compositions in different environmental media in the Arctic. Among them, lead and mercury concentration data were measured using inductively coupled plasma mass spectrometry, atomic fluorescence spectrometer, atomic absorption spectroscopy, mercury analyzer, and neutron activation method. All mercury isotopes were measured using a multi receiver inductively coupled plasma mass spectrometer, while lead isotopes were measured using a (multi receiver) inductively coupled plasma mass spectrometer and a thermal ionization mass spectrometer. This dataset contains a large number of environmental media samples, covering soil, atmosphere, biology, etc. It has a long time span, is comprehensive and detailed, and can provide basic data support for the systematic study of lead and mercury cycling in Arctic terrestrial ecosystems.