Point source urban soil chemistry Great Britain (version 1)

This dataset has now been superseded, please see the Measured Urban Soil Chemistry dataset. The BGS digital point source urban soil chemistry data (GB_PointSourceUrbanSoilPHE_v1) comprises the locations and concentrations (mg kg-1) of Arsenic (As), Cadmium (Cd), Chromium (Cr), Nickel (Ni) and Lead (Pb) in urban topsoil samples. The data is derived from the national, high resolution urban soil geochemical data from the BGS Geochemical Baseline Survey of the Environment (G-BASE) project. The information is relevant for the first stage of any assessment of risks to human health required by regulatory authorities in relation to land use and also for assessing ecological risk. Although point source PHE (Potentially Harmful Element) concentrations above respective SGVs (Soil Guideline Value) do not necessarily imply a significant health risk, they do highlight the need to consider whether or not there may be a risk. The urban soil chemistry data can be used to assist Local Planning Authorities to identify those areas where a risk assessment may need to be carried out by developers. Comparison of this spatially referenced geochemical data with information on current or historic land use and geological information might help environmental professionals decide whether high PHE concentrations in topsoils can be attributed to geogenic or anthropogenic sources. The point source data is based on an interpretation of the records in the possession of the BGS at the time the dataset was created.

本数据集已遭更新，请参阅《测量的城市土壤化学数据集》。英国地质调查局（British Geological Survey，简称BGS）的数字点源城市土壤化学数据（GB_PointSourceUrbanSoilPHE_v1）包含了城市表层土壤样本中砷（Arsenic，简称As）、镉（Cadmium，简称Cd）、铬（Chromium，简称Cr）、镍（Nickel，简称Ni）和铅（Lead，简称Pb）的地点及浓度（单位：mg kg^-1）。数据源于英国地质调查局环境地质基准调查（G-BASE）项目提供的国家高分辨率城市土壤地球化学数据。该信息对于任何评估监管机构要求的人体健康风险，尤其是在土地利用方面的风险初评，以及生态风险评估均具有重要意义。尽管点源潜在有害元素（Potentially Harmful Element，简称PHE）浓度超过相应土壤指导值（Soil Guideline Value，简称SGV）并不一定意味着存在显著的健康风险，但它们确实凸显了评估是否存在风险之必要性。城市土壤化学数据可用于协助地方规划机构识别需要由开发商进行风险评估的区域。将此类空间参照的地球化学数据与当前或历史土地利用信息以及地质信息进行对比，有助于环境专业人士判断表层土壤中高PHE浓度是否归因于地质来源或人为来源。点源数据基于英国地质调查局在创建数据集时拥有的记录的解释。