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Exploring the planetary boundary for chemical pollution

This article examines the planetary boundary for chemical pollution, one of the boundaries for which continued impacts could erode the resilience of ecosystems and humanity.

Linn Persson / Published on 16 February 2015

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Diamond, M.L., C.A. de Wit, S. Molander, M. Scheringer, T. Backhaus, R. Lohmann, R. Arvidsson, Å. Bergman, M. Hauschild, I. Holoubek, L. Persson, N. Suzuki, M. Vighi, C. Zetzsch (2015). Exploring the planetary boundary for chemical pollution. Environment International, 78, 8–15; online February 2015.

The central concept of the planetary boundary (or boundaries) for chemical pollution (PBCP or PBCPs) is that the Earth has a finite assimilative capacity for chemical pollution, which includes persistent, as well as readily degradable chemicals released at local to regional scales, which in aggregate threaten ecosystem and human viability.

The PBCP allows humanity to explicitly address the increasingly global aspects of chemical pollution throughout a chemical’s life cycle and the need for a global response of internationally coordinated control measures. The authors submit that sufficient evidence shows stresses on ecosystem and human health at local to global scales, suggesting that conditions are transgressing the safe operating space delimited by a PBCP. As such, current local to global pollution control measures are insufficient.

However, while the PBCP is an important conceptual step forward, at this point single or multiple PBCPs are challenging to operationalize due to the extremely large number of commercial chemicals or mixtures of chemicals that cause myriad adverse effects to innumerable species and ecosystems, and the complex linkages between emissions, environmental concentrations, exposures and adverse effects. As well, the normative nature of a PBCP presents challenges of negotiating pollution limits amongst societal groups with differing viewpoints.

Thus, a combination of approaches is recommended as follows: develop indicators of chemical pollution, for both control and response variables, that will aid in quantifying a PBCP(s) and gauging progress towards reducing chemical pollution; develop new technologies and technical and social approaches to mitigate global chemical pollution that emphasize a preventative approach; coordinate pollution control and sustainability efforts; and facilitate implementation of multiple (and potentially decentralized) control efforts involving scientists, civil society, government, non-governmental organizations and international bodies.

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10.1016/j.envint.2015.02.001 Closed access
Topics and subtopics
Governance : Public policy / Air : Pollution / Health : Pollution

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