Påverkan av gruvdrift på sedimentegenskaper och toxicitet för akvatiska organismer i norra Sverige

The data contain information on spatial and temporal variation in sediment properties and toxicity estimates of three lakes in close proximity to an abandoned Pb/Zn-mine. One sediment profile per lake was analyzed and the age of different sediment layers was estimated, to be able to correlate the results with known activities during the development of the mine. Number of variables: 17 Number of rows (incl. header): 76 Variable List: Site: Lake origin of the sediment core (Lake 1, Lake 2 or Lake 3) Depth: Depth of the analyzed sediment layer (cm) for each core Zn: Zinc concentration in the sediment layer (mg kg-1) Pb: Lead concentration in the sediment layer (mg kg-1) Density: Density of the sediment layer (g cm-3) LOI: Loss on ignition for each sediment layer (%) TOC: Total organic carbon for each sediment layer (%) PECQ: Predicted effect concentration quotient for each sediment layer PECQ.norm: Predicted effect concentration quotient for each sediment layer, normalized to total organic carbon content 210Pb: 210Pb activity for each sediment layer (Bq kg-1), measured at 46.5keV SD(210Pb): Standard deviation of 210Pb activity for each sediment layer (Bq kg-1), measured at 46.5keV 214Pb(295keV): 214Pb activity for each sediment layer (Bq kg-1), measured at 295keV SD(295keV): Standard deviation of 214Pb activity for each sediment layer (Bq kg-1), measured at 295keV 214Pb(351 keV): 214Pb activity for each sediment layer (Bq kg-1), measured at 351keV SD(351 keV): Standard deviation of 214Pb activity for each sediment layer (Bq kg-1), measured at 351keV 137Cs: 137Cs activity for each sediment layer (Bq kg-1), measured at 662keV SD(137Cs): Standard deviation of 137Cs activity for each sediment layer (Bq kg-1) Missing data codes: NA – not analyzed本数据集涵盖紧邻废弃铅锌矿的三座湖泊的沉积物性质时空变化数据，以及沉积物毒性评估结果。研究对每座湖泊各采集一根沉积物剖面进行分析，并对不同沉积层的年代进行估算，以便将研究结果与该铅锌矿开发期间的已知人类活动建立关联。 变量总数为17个，数据总行数（含表头）共计76行。 变量列表： Site：沉积物岩芯的湖泊来源（湖泊1、湖泊2或湖泊3） Depth：对应岩芯的分析沉积层深度（单位：厘米，cm） Zn：沉积层中的锌浓度（单位：毫克每千克，mg kg⁻¹） Pb：沉积层中的铅浓度（单位：毫克每千克，mg kg⁻¹） Density：沉积层的容重（单位：克每立方厘米，g cm⁻³） LOI：各沉积层的烧失量（Loss on ignition，LOI，%） TOC：各沉积层的总有机碳（Total organic carbon，TOC）占比（%） PECQ：各沉积层的预测效应浓度商（Predicted effect concentration quotient，PECQ） PECQ.norm：经总有机碳含量归一化后的预测效应浓度商 210Pb：各沉积层的铅-210（²¹⁰Pb）活度（单位：贝可每千克，Bq kg⁻¹，测量能峰为46.5keV） SD(210Pb)：各沉积层铅-210活度的标准差（单位：贝可每千克，Bq kg⁻¹，测量能峰为46.5keV） 214Pb(295keV)：各沉积层的铅-214（²¹⁴Pb）活度（单位：贝可每千克，Bq kg⁻¹，测量能峰为295keV） SD(295keV)：各沉积层铅-214活度的标准差（单位：贝可每千克，Bq kg⁻¹，测量能峰为295keV） 214Pb(351 keV)：各沉积层的铅-214（²¹⁴Pb）活度（单位：贝可每千克，Bq kg⁻¹，测量能峰为351keV） SD(351 keV)：各沉积层铅-214活度的标准差（单位：贝可每千克，Bq kg⁻¹，测量能峰为351keV） 137Cs：各沉积层的铯-137（¹³⁷Cs）活度（单位：贝可每千克，Bq kg⁻¹，测量能峰为662keV） SD(137Cs)：各沉积层铯-137活度的标准差（单位：贝可每千克，Bq kg⁻¹） 缺失数据代码：缺失值代码为NA，表示未分析。