HJ 1111-2020 in English
VALIDTechnical guidelines for eco-environmental health risk assessment —General principles
- Issued on:2020-03-18
- Implemented on:2020-03-18
- File Format:PDF
- Delivery:Via email within 1~3 business days
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本标准规定了生态环境健康风险评估的一般性原则、程序、内容、方法和技术要求。
本标准适用于指导生态环境管理过程中,为预防和控制与损害公众健康密切相关的环境化学性因素而开展的环境健康风险评估。
Introduction
Standard Background and Positioning
As my country's first programmatic standard in the field of ecological environmental health risk assessment, HJ 1111-2020 was issued and implemented by the Ministry of Ecology and Environment on March 18, 2020. The standard is based on the Environmental Protection Law and aims to establish a scientific and standardized assessment technology system to promote the integration of health risk prevention and control into environmental management decision-making.
Core Assessment Framework
| Assessment Phases | Key Technologies | Outputs |
|---|---|---|
| Hazard Identification | Weight of Evidence Approach, Causal Inference | Toxic Effect Inventory |
| Hazard Characterization | Dose-Response Modeling, Low-Dose Extrapolation | Reference Dose (RfD)/Carcinogenicity Slope (SF) |
| Exposure Assessment | Monte Carlo Simulation, Fate Model | Exposure Distribution |
Key Technological Breakthroughs
1. Hierarchical Evaluation Strategy
The standard innovatively proposes a dual-track technical guidance system of basic method category and application field category, and realizes dynamic adjustment of evaluation accuracy through the hierarchical design of general outline-special guidelines.
2. Uncertainty Management
It is required to record the assumptions and data gaps throughout the process, with special provisions:
- The excess risk accumulation principle is adopted for carcinogenic effects
- The hazard quotient accumulation principle is adopted for non-carcinogenic effects
Analysis of Implementation Points
For the protection of sensitive populations, the standard clearly requires:
- The worst exposure scenario analysis must be included
- HJ 876-877 series standards should be used to obtain localized exposure parameters
- When toxicity parameters from different institutions conflict, expert demonstration should be initiated
Typical application scenarios
Taking the soil pollution project as an example, the following should be considered simultaneously:
- Oral ingestion, skin contact, and particulate matter inhalation are three exposure pathways
- Carcinogenic risk calculation is performed using the linear multi-stage model
- Parameter sensitivity analysis is performed in combination with GB/T 27921
Direction of standard evolution
Compared with the European and American systems, the outstanding features of this standard include:
- Mandatory requirement to report the handling of peer review opinions
- Establish the principle of giving priority to the use of domestically produced exposure parameters
- Innovatively propose an evaluation conclusion framework guided by the needs of ecological environmental management

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