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The substitution principle
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DOI：10.1016/j.yrtph.2011.01.011.png)
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According to the substitution principle, hazardous chemicals should be replaced by less hazardous alternatives. In this paper, the major issues concerning the more precise definition of the principle are analyzed, and a general purpose definition is proposed. It is claimed that the priority between reducing hazard, functionality and economical considerations in the application of the substitution principle is a matter for adjustment in each particular case that cannot be settled beforehand. None of these objectives can have absolute priority over the others, but the substitution principle is aimed at increasing the priority given to the reduction of hazards to human health and the environment. Major methods to promote and implement the principle are summarized, current legislative approaches are discussed, and proposals for efficient implementation are made. It is emphasized that the primary responsibility for avoiding hazardous substances and processes rests with industry. (C) 2011 Elsevier Inc. All rights reserved.
Keyword:
Substitution principle
Hazardous chemicals
Chemical risks
Chemicals control
Chemicals policy
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