Posted: Jun 16, 2009 | |
Approaches to safe nanotechnology |
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(Nanowerk Spotlight) New technologies are always polarizing society – some only see the inherent dangers, others only see the opportunities. Since these two groups usually are the loudest, everybody else inbetween has a hard time to get their message across and with objective information and facts. Nanotechnologies are no different. The nay-sayers call for a total moratorium everytime scientific research with concerning conclusions is published while opportunistic hypsters are only interested in selling more products or reports and ridicule even the faintest objections and concerns as uninformed panicmongering. | |
From a risk and safety point of view it is impossible to draw any definite conclusions as far as today's nanomaterials are concerned. Although gaining steam, nanotoxicological research is still scarce; standards are just emerging; and scientific findings can be contradicting each other because the underlying assumptions and methodologies vary. If you want to delve deeper into this issue, we have written several dozen Nanowerk Spotlights on this topic of nanotechnology risks. | |
One initiative that tried to shed light on this issue is a recently completed global review of completed and near completed environment, health and safety research on nanomaterials and nanotechnology. The resulting EMERGNANO report (pdf download, 1.2 MB) is a unique attempt to identify and assess worldwide progress in relation to nanotechnology risk issues. | |
The review doesn't provide any new data or conclusions but is offeres a fairly comprehensiv identification, stocktaking and analysis of of research carried out worldwide on nanotechnology safety, including that relating to hazard, exposure, risk assessment and regulation. | |
The EMERGNANO project, conducted under the umbrella of the SAFENANO initiative, identified more than 670 projects from around the world, and after careful selection assessed more than 260 unique, relevant projects completed, close to completion or in progress since 2004. The final report provides a comprehensive listing of projects, alongside detailed evaluation of their outputs. The authors caution, though, that they "were unable to identify significant output from many of the studies involved in the programme, including studies which had already been completed. We accept, in relation to this, that we have not captured all of the information available on these studies and it is quite likely that there is some information that we have not been able to identify by the various routes through which we attempted to do so." | |
Ever since its October 2005 report "Characterizing the potential risks posed by engineered nanoparticles" in which it described a set of 19 Environmental, Health and Safety (EHS) research objectives, the UK government has been very active in research pertaining to the environmental, health and safety issues relating to engineered nanoparticles (for details on these 19 research objectives (ROs), see our Spotlight "The UK continues to push nanotechnology risk research"). | |
The approach used in this review and analysis was to: | |
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With regard to the research objectives, the assessment reveals some important progress made across the four main thematic areas of characterisation, exposure, toxicology and ecotoxicology spanned by the 19 ROs. This includes: | |
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Currently, EMERGNANO represents the best available picture available of current strategic nanorisk research. As such, the review presents an excellent basis for assessing progress of these and other studies in the future. | |
Impressive as this study's scope is, the crucial statement by the authors is this: "After assessing study quality and completeness, we did not identify a sufficient body of evidence to make a qualitative risk assessment feasible for any category of nanomaterial." Given the speed of nanotechnology commercialization, this is scary. It should prompt regulators and other governing bodies to seriously step up their funding for relevant research. | |
In the meantime, the shouting match between the prophets of doom and the hypemeisters will continue... | |
By Michael Berger – Michael is author of three books by the Royal Society of Chemistry: Nano-Society: Pushing the Boundaries of Technology, Nanotechnology: The Future is Tiny, and Nanoengineering: The Skills and Tools Making Technology Invisible Copyright © Nanowerk LLC | |
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