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首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >Sub-continental-scale geochemical mapping: sampling, quality control and data analysis issues
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Sub-continental-scale geochemical mapping: sampling, quality control and data analysis issues

机译：次大陆规模的地球化学测绘：采样，质量控制和数据分析问题

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During 1996/97, c. 1500 samples of agricultural soils from ten northern European countries (western Belarus, Estonia, Finland, northern Germany, Latvia, Lithuania, Norway, Poland, northwestern Russia and Sweden) were collected from the Ap and B/C-horizons at 750 sites. The sample sites were evenly spread over a 1 800 000 km2 area, giving an average sample density of one site per 2500 km2. The <2 mm fractions (Poland: <1 mm) of all samples were analysed for up to 62 chemical elements following ammonium acetate, aqua regia and HF extractions, and for total element concentrations by X-ray fluorescence spectrometry. Electrical conductivity, pH (water extraction) and loss on ignition (1030°C) were also determined. Each method was applied to all the samples in one laboratory only.
机译：在1996/97年度，c。来自十个 北欧国家（白俄罗斯西部，爱沙尼亚，芬兰， 北德国，拉脱维亚，立陶宛，挪威，波兰，西北 俄罗斯和瑞典）是从750个站点的A p 和B / C地平线 收集的。样本位置均匀分布在1800 000 km 2 区域，平均样本密度为每 2500 km 2 。在乙酸铵，王水和HF萃取后，分析所有样品 的<2 mm分数（波兰：<1 mm）多达62种化学元素，并进行总萃取X射线荧光光谱法测定元素 的浓度。还确定了电导率，pH（水萃取）和灼烧失重（1030°C） 。每种方法仅在一个实验室中应用于所有样品 。

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