Assess soil/contamination from measured concentration, background and standards.
Cn 为实测浓度、Bn 为背景值、Sn 为评价标准值;Igeo < 0 无污染,0–1 无至中度,1–2 中度,2–3 中至强,≥ 3 强污染(Müller 地累积指数分级)。
| Item | Formula | Source-Standard |
|---|---|---|
| Sampling layout | Sampling points are staged by land use type and contamination screening results | HJ 25.3-2019 Technical guidelines for risk assessment of soil contamination of land for construction |
| Risk judgment | A conceptual model of exposure pathways and receptors supports risk assessment | HJ 25.3-2019 Technical guidelines for risk assessment of soil contamination of land for construction |
| Risk control value | Risk control values are derived separately for carcinogenic and non-carcinogenic effects | HJ 25.3-2019 Technical guidelines for risk assessment of soil contamination of land for construction |
地质污染调查评估工具,依据污染物实测浓度、土壤背景值与评价标准,计算单因子污染指数、超标倍数、富集系数与地累积指数,并按 Igeo 分级判定污染程度。