More research needed to assess dangers of CNTs
As a response to speculation over health hazards of carbon nanotubes (CNTs), the HSE has released an information sheet asking for more care to be exercised in their use.
The information sheet, ‘Risk Management of Carbon Nanotubes’, mentions a Nature Nanotechnology paper which says that certain CNTs might share properties with asbestos, a well known dangerous substance. The HSE acknowledges that the study has not proved that CNTs cause diseases similar to asbestos but warns that properties similar to asbestos do raise concern and require further research into the matter. Keeping the potential risks in mind, the HSE has asked for a limited and well-controlled use of the material. It has also recommended that the CNTs be labelled as ‘Caution: substance not yet fully tested’, to ensure that people using it are aware of the fact that their use could prove hazardous.
Companies must make sure appropriate training is in place for any staff working with potentially hazardous materials, find out more about enrolling your staff and managers onto iosh safety courses.
CNTs are molecular-level fabricated forms of carbon, composed of either pure carbon or including metals or any other material. Their impressive properties have led to their use in many commercial and scientific applications. Their strength and light weight have made them a much sought after material. However, a debate has been emerging among researchers to establish the link between asbestos and CNTs, as they are both similar in shape and can endure in the lungs of laboratory animals.
The HSE’s decision to control the use of CNTs will bring the issue in the limelight and could lead to further research to assess the substance in terms of the risk it poses to the workers.
