Nanotechnology and the Social Inclusion Workshop

One of the frequent criticisms of government policies regarding nanotechnology, nanoindustry, or nanomaterials, is that the public is not involved in the decision making process or that the public is not informed about the risks, benefits, etc.

In December 2008, the Australian Office of Nanotechnology (AON) tried a new approach to that problem by creating a "Social Inclusion and Community  Engagement Workshop". By inviting representatives from Government, Academia, Industry, NGOs, and the general public, the AON sought to create dialog and

. . . . a positive culture between key stake holders . . . . This workshop would help create a partnership approach to discussing, developing and delivering social inclusion and engagement policies and practices for AON and the stakeholders involved or interested in nanotechnology.

The report issued by AON about the workshop describes key points raised by each stakeholder group. Two key points emerge as common to all groups, although each group expressed it differently:

1) The need for a sharing of knowledge and information with each other in language that each group could understand and

2) A need to continue and expand the workshop as a way of building trust and overcoming divisions.

All too often, Industry, Government, Academia, Activist Groups/NGOs and the general public allow walls to develop, walls that block out communication and understanding with others. To paraphrase and disagree with Robert Frost, good walls do not good neighbors make.

The report is well worth reading and one can only hope that its findings are followed up on with more workshops in Australia and similar ones in the US and Europe as well.

Nanotechnologies and the Consumer: A Call for Papers

The Journal of Consumer Policy is an academic journal, publisher by Springer, that, as the title implies, focuses on consumer issues. The editors have issued a call for papers for a special issue, "Nanotechnologies and the Consumer". For more information on submitting a manuscript, please take a look here.

 

EPA Issues Significant New Use Rules for Multi-Walled and Single-Walled Carbon Nanotubes

In the June 24, 2009 federal register, the U.S. Environmental Protection Agency (EPA) issued two proposed Significant New Use Rules (SNUR) under Section 5(a) of the Toxic Substances Control Act (TSCA) for multi-walled and single walled carbon nanotubes.  The SNURs followed up on the EPA's prior September 2008 consent orders entered into with Thomas Swan & Co. Ltd. (Swan) for two of its Elicarb carbon nanotube products.

Under TSCA, the prior September 2008 consent orders were only binding on Swan.  "Consequently, after signing a Section 5(e) Consent Order, EPA generally promulgates a Significant New Use Rule (SNUR) that mimics the Consent Order to bind all other manufacturers and processors to the terms and conditions contained in the Consent Order.  The SNUR requires that manufacturers, importers and processors of certain substances notify EPA at least 90 days before beginning any activity that EPA has designated as a "significant new use. These new use designations are typically those activities prohibited by the Section 5(e) Consent Order."

Under the terms of the Septmeber 2008 consent orders which are incorporated into the new proposed SNURs, significant new uses of multi-walled and singled-walled carbon nanotubes are deemed to occur when employees do not “use gloves impervious to nanoscale particles and chemical protective clothing;” and/or fail to “use a NIOSH-approved full-face respirator with an N-100 cartridge while exposed by inhalation in the work area.”

Thus, the new proposed SNURs require these same conditions.

Manufacturers should also be aware that the EPA considers carbon nanotubes new chemical substances requiring full PMN notice, registration, and approval under Section 5 of TSCA, and has initiated at least one recent enforcement action against a carbon nanotube manufacturer who has failed to properly register its products.



 

Regulating Nanotechnologies

How to regulate nanomaterials, nanotechnologies, and nanoindustries has become and will continue to be for the foreseeable future a major focus of US and European regulatory agencies, legislatures on local and national levels and of NGOs.

This Fall in London, from 10-11 September, US and European regulators and researchers from NGOs such as the Woodrow Wilson Center's Project on Emerging Nanotechnologies, the London School of Economics, (a tidbit for the trivia buffs: Among the London School of Economics better know alumni, one Michael Philip Jagger, aka Mick Jagger) etc will meet and present a collaborative report and other papers. Attendance at the conference is by invitation only and e-mails should be addressed to nanotech@lse.ac.uk attention Ms. Carmen Gayson. For more information, look here.

The Woodrow Wilson Center's Project on Emerging Nanotechnologies is also presenting a meeting and webcast in connection with the conference on September 23, 2009. For more information, take a look here.

Oversight of Next Generation Nanotechnology

In a recent speech to the IFT International Nanoscience Conference, Dr. Annette McCarthy of the FDA, is quoted as saying "We believe that the regulatory authority is sufficient to address nanotechnology. But there are further questions we need to address".

J. Clarence Davies, currently with the Woodrow Wilson International Center  project on Emerging Nanotechnologies, might agree with the latter part of  that statement, but certainly not with the former.

In the recently published "Oversight of Next Generation Nanotechnology", Davies looks at existing regulatory agencies that would have oversight of nanoproducts and finds them lacking:

The current oversight system was designed to deal with the problems of steam engine technology in the context of a pre-computer economy. . , ,

It was based on assumptions that most programs are local, that programs can be segmented and isolated from each other, that technology changes slowly and that all the important problems have been identified. All of these concepts are no longer valid. . . .  The antiquated conceptual basis of the system has been made more evident by the massive erosion of money and manpower from a system that always suffered from inadequate resources.

The inadequacy of the current system to deal with new technologies is obvious. Especially in the United States, regulatory oversight has always been somewhat deficient, and over the past 30 years it has been allowed to deteriorate to the point where only major changes can rescue it. On both sides of the Atlantic, extreme free market ideologies have contributed to the erosion of oversight. Furthermore, there has been a failure to anticipate and analyze the new technologies that are being created and commercialized at an ever-increasing rate.

Mr. Davies offers what some might see as a radical solution, dissolving such agencies as EPA, CPSC, etc, and creating a new cabinet level Department of Environmental and Consumer Protection, which would have the authority to and be tasked with product and technology regulation, pollution control, etc.

No one will, I think, disagree with Davies observations on the current state of US regulatory agencies. Decades of decreasing budgets, decreasing staff, and the dominance of a political ideology that viewed government regulation of anything as evil effectively rendered agencies such as CPSC impotent and unable to perform their duties. This impotence extended to other agencies as well- we have only to look at the near collapse of the economy to see that agencies charged with regulating economic matters failed as well. With a change in administrations and public outrage the various failures of regulatory agencies, those agencies are finally beginning to see an increase in their budgets, manpower and authority.

Certainly also, one cannot disagree with Davies assertion that the agencies that he focuses on were designed to regulate products created by 19th and early 20th century technologies and industries and are in need of a review and updating. However, one has to wonder if Davies proposal of tearing the regulatory structure down and starting over is a practical solution.

Davies assumes that a new Department of Environmental and Consumer Protection's budget would equal the combined total of the budgets of the agencies and departments it would be replacing.  Given the way that the federal budget process operates, that's an assumption that is unlikely to happen. Further, it's also unlikely that moving agencies from one department to another and merging agencies to create an new department would be a smooth and easy process. Each one would have it's own particular office culture which might create friction among personnel. Also, aside from the lobbying of various interest groups to contend with, Congressional Committees and Subcommittees that have budgetary control might not be willing to give that control and power up.

Having said this, Davies report does serve as a starting point for a long overdue discussion of needed changes in regulatory agencies that have and will have responsibility for regulation of nanotechnology and nanoindustry. As Davies points out early on in the report, the purposes of regulation are to safeguard the public and create conditions that allow for the safe growth of, in this case, nanoindustry, something that I think most of us reading and writing on this blog want to see.

Are Nanoparticles Released by Compounding or the Cutting of Nano-Composites?

Perhaps the most overlooked issue when examining potential nano-related environmental, health, and safety concerns is whether there is any true likelihood of exposure in reasonably foreseeable use scenarios.  While there should continue to be extensive toxicity testing for certain nanoscale materials, the most interesting research (from my perspective) relates to potential workplace and/or condumer exposure in realistic settings.  We examine two studies along these lines below.

C. Su-Jung et al., "Control of Airborne Nanoparticles Releases During Compounding of Polymer Nanocomposites," 3 Nano: Brief Reports and Reviews 4, 301 - 309 (2008).

This study was conducted by researchers at the National Science Foundation-funded Center for High-Rate Nanomanufacturing at the University of Massachusetts at Lowell.  The scientists examined potential nanoparticle release related to the twin-screw extruder compounding of polymer nanocomposites.  The test was conducted because "commercial compounding (mixing) of nanocomposites is typically achieved by feeding the nanoparticles and polymer into a twin-screw extruder, the airborne particles associated with nanoparticles reinforcing agents are of particular concern, as they can readily enter the body through inhalation."

The nanoparticles in question were nano aluminum oxide particles acquired from Nanophase Technologies in commercially available form.  The particles were spherical in shape and ranged from 27 to 53 nm in diameter.  They were also specifically "engineered to form agglomerates with a nominal size of 200 nm."

Regarding the test itself, the scientists fed 2.3kg of polymer pellets and 0.16 kg of nano-alumina particles into a twin-screw extruder for processing and then measured potential nanoparticle release through two measurement techniques: (i) TSI Fast Mobility Particle Spectrometer for real time measurement; and (ii) personal air sampling using a special filter media designed to catch nanoparticles. 

The study concluded that "[t]he twin-screw extrusion process for compounding polymer nanocomposites tends to break up nanoparticle aggregates and mechanically disperse particles thoroughly during the extrusion process."  The study also found that "[nano]particle diffusion was enhanced by . . . poorly-performing local and general exhaust systems."

Interestingly, for part of the test the scientists applied a nominal engineering control by covering the open top of the extruder feeding tube throat with aluminum foil which they found "dramatically reduced" nanoparticle measurements.  They also found that consistently cleaning the lab after each use "reduced laboratory background nanoparticle concentration."

D. Bello et al., "Exposure to nanoscale particles and fibres during machining of hybrid advanced composite containing carbon nanotubes," 11 J. Nanopart Res 231 - 249 (2009).

The researchers in this study investigated whether and to what extent airborne nanoparticles were generated by wet and dry cutting of two hybrid carbon nanotube composites.  The dry cutting method employed a diamond coated band saw.  The wet cutting was performed using a diamond grit rotary cutting wheel with water lubricating the cutting surfaces during the process.  Because the scientists were interested in potential "worst case" scenarios, no vacuum or emission controls were used in tests.

The researchers found that wet cutting did not produce airborne nanoparticle emissions above background levels, but that dry cutting "generated statistically significant quantities of nanoscale and fine particles as compared to background (p<0.05), regardless of the composite type, . . . as expected."

Interestingly, the study also found that "CNTs, either individual or in bundles, were not observed in extensive microscopy of collected samples" for either wet or dry tests.


We will continue to track down and summarize these types of potential exposure studies.  Right now, they are few and far between.

Investor Environmental Health Network Publishes New Nano Corporate Responsibility Paper

The Investor Environmental Health Network (IEHN) claims to represents 20 investment organizations with $22 billion under management that are seeking to ensure that the companies they invest in are taking appropriate steps to reduce risks associated with the toxic chemicals used in their products.  IEHN's ultimate objective is to use "public policy work regarding investor rights and disclosure, as well as dialog and shareholder resolutions, [to address] the risks and opportunities associated with toxic chemicals and safer alternatives in products." IEHN previously issued a report on the use of nanotechnology in cosmetics in February 2007. 

IEHN's new report -- "Bridging the Credibility Gap: Eight Corporate Liability Accounting Loopholes that Regulators Must Close," Investor Environmental Health Network, 2009 -- focuses on corporate disclosure issues surrounding the commercialization of nanoscale materials. IEHN identifies eight "loopholes" that it believes companies and regulators must close to protect shareholder value.

IEHN's eight purported "loopholes" are:

1. Shortsightedness: Failing to make a full accounting of potential risks and liability be focusing solely on short term issues.

2. Concealed Science: "Concealing emergency science that forewarns of potential liabilities in the future."

3. The Known Minimum: Basing business decisions on low end risk assessments rather than true case "worst case" scenarios.

4. Privileging Secrecy: Using the attorney client privilege to shield against public disclosure of potential liability.

5. Inconsistent Estimates: Providing different risk estimates to insurers on the one hand, and investors on the other.

6. Hidden Assumptions: "Using hidden assumptions to minimize estimates of liability.

7. Missing Benchmarks: Failing to benchmark a company's potential liability against its competitors in the same business facing similar liability issues.

8. Risk-Free Proxies: Failing to allow shareholders to place EHS questions on annual proxy ballots.

These purported  "loopholes" are not exclusive to nanotechnology.  IEHN hypothetically compares the potential corporate liability of companies using nanoscale materials to the ruin faced by companies involved in asbestos manufacturing from the 1930s forward. Basically, IEHN argues that failing to close these eight identified "loopholes" destroyed the asbestos industry and the same thing might happen to the nanomaterials industry if it does not act differently.

Micelle, my micelle

There's been a sort of a medical theme running through this week's entries, so, to close out medical week, we turn to an article by David Peters et al,  advanced published on PNAS website, "Targeting atherosclerosis by using modular, multifunctional micelles". Much as other nanoparticles may be targeted at tumors (see "Targeting Tumors"), so micelles may be targeted at plaque in blood vessels.

As the article describes, lab mice fed a high fat diet were treated for plaque formation using micelles with peptides that would seek out and attach themselves at the weakest point of the plaque, delivering anticoagulants to reduce the formations. The results of the experiments

Micelles coated with the CREKA peptide were able to specifically target diseased vasculature in ApoE-null mice. . . . micelles targeted with the CREKA peptide present a potentially useful approach to targeting atherosclerotic plaques.

. . .  the CREKA micelle platform may be useful in reducing the clotting tendency in plaques and could potentially also reduce the risk of thrombus formation on plaque rupture. Also the targeting makes it possible to lower the dose, which should reduce the risk of bleeding complications.

This study, along with earlier ones on targeting nanoparticles to seek out tumors to more effectively deliver chemotherapy treatments, seems to indicate that the best use of nanoparticles in medicine is as delivery systems.

And for anyone below a certain age who didn't get the reference in the title, take a look here. Ah, Lennon and McCartney. They just don't write them like this anymore.

Interesting Nano-Regulatory Developments

Inside U.S. Trade reports three interesting nano-regulatory developments: (i) the "EPA has signaled that it may soon decide to regulate nano-silver as a pesticide under " FIFRA; (ii) the "EPA may rule favorably on some points" raised in the 2008 citizen's petition filed by 14 advocacy groups seeking more restrictive regulation of nanoscale silver; and (iii) Congresswoman Kathy DahlKemper (D-Pa) on the House Science and Technology Committee "is pursuing a Cosmetics Safety Bill that would require registration of cosmetics containing nanomaterials."

Are Nano Consumer Products Headed Underground?

EurActiv.com (EU News, Policy Positions, and EU Actions on line) published an article on June 15, 2009 entitled "Nanotech claims 'dropped' for fear of consumer recoil." 

The article reported on a nanotechnology conference which took place in Brussels during the week of June 10 at which a scientist from the Woodrow Wilson International Center for Scholars' Project on Emerging Nanotechnologies maintained that some of the current environmental, health, and safety controversy accompanying certain nanoscale materials is not grounded in scientific fact, but has nonetheless led some manufacturers to remove "nano" from their product labels and advertising. He further stated that "we have seen some companies drop the 'nano' claim while continuing to use nanotechnology. This suggests nanotechnology is going underground."

Providing a counterpoint, the Director of the European Nanotechnology Industries Association said that "[v]arying definitions [of nanotechnology] leads to claims that the industry is not open to information. But nobody is lying and nobody is misleading the public or authorities. Let's agree on what we're talking about and work together to inform consumers."