发砷含量背景值 hair As content background
Results show that the calculated geochemical baselines can reflect natural variation of soil Cu and Pb background values between different sampling sites.
结果表明,稳健回归方法确定的表层土壤Cu、Pb基线值可以反映出不同样点间,土壤Cu、Pb背景含量的自然变异。
参考来源 - 基于稳健统计学确定高潜在污染土壤Cu、Pb基线值The background content of Pb in soils gained by this method was 27.2μg g-1, in accord with the average content of deep underground soil(26 μg g-1).
得到Pb元素的背景含量为27.2μgg-1,与安徽省已知的土壤Pb元素背景含量(26μgg-1)基本一致。
参考来源 - 合肥大兴地区土壤Pb元素背景含量与污染叠加含量区分的Hazen概率曲线方法·2,447,543篇论文数据，部分数据来源于NoteExpress
模糊背景含量对流行起来吗？
给出了大连市土壤中汞的自然背景含量。
The natural background values of Hg in soils of Dalian was also obtained.
重病区主要属岩石、土壤和水碘背景含量低的分布区，其岩石类型主要为碳酸盐岩；
The heavy disease areas were mainly distributed at carbonate rock areas, with low background iodine in rocks, soils and water;
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