Chapter3 Designing Safer Chemicals General Principles Methods for designing for designing Safer chemicals Safer chemicals
General Principles for Designing Safer Chemicals Methods for Designing Safer Chemicals Chapter 3 Designing Safer Chemicals
3 1 General Principles for Designing Safer chemicals
3.1 General Principles for Designing Safer Chemicals
3.1. General Principles for Designing Safer Chemicals .s Two main ways to avoid Hazard and Toxicity ss 1: make it not possible to enter the body, 2: make it not possible to affect the bio-chemical and physiologica/ processes(生物化学和生理过程 hazardously. . o to human beings, to environment Direct hazard indirect hazard
3.1.1 General Principles for Designing Safer Chemicals ❖ Two main ways to avoid Hazard and Toxicity: ❖ 1：make it not possible to enter the body, ❖ 2：make it not possible to affect the bio-chemical and physiological processes(生物化学和生理过程) hazardously. ❖ to human beings, to environment Direct hazard & Indirect hazard
General Principles for Designing Safer Chemicals External considerations Reduction of exposure or accessibility 减少化学品与生物机体接触的可能性 y Internal considerations Prevention of toxic effects n 预防化学品的毒性
General Principles for Designing Safer Chemicals ✓ External considerations： Reduction of exposure or accessibility 减少化学品与生物机体接触的可能性 ✓ Internal considerations： Prevention of toxic effects 预防化学品的毒性
General Principles for Designing Safer Chemicals External considerations so They refer to the reduction of exposure by designing chemicals to improve the important physical and chemical properties related to environmental distribution and the up-take of the chemicals by man and other living organisms
❖ They refer to the reduction of exposure by designing chemicals to improve the important physical and chemical properties related to environmental distribution and the up-take of the chemicals by man and other living organisms. External considerations： General Principles for Designing Safer Chemicals