Green chemistry and life cycle assessment are two methodologies used in environmental studies, both theoretically and practically. The purpose of this analysis was to assess whether and how green chemistry principles could be integrated into the life cycle assessment methodology and to local and international industrial policies to achieve sustainability goals at the territorial level. First, some contributions that lifecycle thinking gives to green chemistry and vice versa are proposed, based on existing research. Data are provided using tables to summarise contents and graphs to outline interconnections, also considering the four steps of life cycle assessment, showing some available references of previous studies. Secondly, some possible points of integration between the 12 principles of green chemistry and environmental policies are listed. For each principle of green chemistry, a possible integration with international and local strategies is proposed. A list of references that might be useful to investigate possible patterns of study for territorial and industrial uses, is provided too. The results show that life cycle thinking and green chemistry can be integrated into theoretical and practical case studies, since many interconnections exist. These interconnections permit one to use the best characteristics of each method to improve the reliability of the other method and, finally, to solve environmental, industrial, and engineering problems with a more comprehensive approach. In addition, green chemistry principles can be easily associated with main environmental policies at the international, national, regional, and local levels. This allows one to use results, knowledge, and expertise of the green chemistry framework and apply them to industries, territories, and communities. The similarities highlighted in this analysis need further investigation in future studies since they can help decision making process in sustainability policies.
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