Bulk atmospheric deposition of fallout radionuclides (FRNs) beryllium-7 and lead-210, with major- and trace-elements (MTEs) including Al, C, Ca, K, Fe, Mg, Mn, N, Na, P, S, Sr, V, Hg, and Zn

Bulk atmospheric deposition collected weekly for 9 years, March 2011 - March 2020, based in Hanover, NH, USA. Samples are collected in 650 cm^2 polyethylene buckets at 40 cm height above ground. Collectors are weighed to determine precipitation total [cm]. Samples are acidified to 2% HCl within the collector, and then vacuum filtered with tared 0.5 um quartz fiber filters. Insoluble mass deposition [mg m-2] is determined by gravimetry. Fallout radionuclides (FRNs) beryllium-7 and lead-210 are measured by gamma spectrometry [Bq m-2] following pre-concentration by MnO2 co-precipitation, with stable Be and Pb added as yield monitors. Major- and trace-elements (MTEs) are measured by ICPOES (Thermo Iris Intrepid II, and Spectro Arcos) [mg m-2], and total Hg by ICPMS (Agilent 7700) [ug m-2].

本数据集采集了2011年3月至2020年3月共9年间的每周大气总沉降（bulk atmospheric deposition）样品，采样点位位于美国新罕布什尔州汉诺威市。采样采用650 cm²的聚乙烯桶，布设高度为地面以上40 cm。对采样桶进行称重以确定降水总量，单位为cm。随后在采样桶内将样品酸化至2%盐酸浓度，再使用经校准称重的0.5 μm石英纤维滤膜进行真空过滤。不溶物质沉降通量[mg·m⁻²]通过重量分析法测定。沉降放射性核素（fallout radionuclides, FRNs）铍-7与铅-210先通过二氧化锰（MnO₂）共沉淀法完成预富集，加入稳定态铍和铅作为回收率监测剂，随后采用γ能谱法测定其活度沉降通量[Bq·m⁻²]。常量与微量元素（major- and trace-elements, MTEs）采用电感耦合等离子体发射光谱法（ICPOES，搭载Thermo Iris Intrepid II与Spectro Arcos仪器）测定，结果单位为[mg·m⁻²]；总汞则采用电感耦合等离子体质谱法（ICPMS，搭载Agilent 7700仪器）测定，结果单位为[μg·m⁻²]。