By statistical analysis,we have established that the baseline of Ni in the surface soil of Guiyang is 7.0 mg/kg and that the soil with Ni content over 7.0 mg/kg may suffer contamination caused by human activities.
By statistical analysis,we have established that the baseline of Ni in the surface soil of Guiyang is 7.0 mg/kg and that the soil with Ni content over 7.0 mg/kg may suffer contamination caused by human activities.
通过对 个样品的分析,得到以下结论:贵阳市表层土壤中镍的基线值为7.0 mg/kg,大于7.0 mg/kg的样品可能遭受人为污染.