Protocols for airborne sampling and analysis of carbon nanotubes (or CNT) and carbon nanofibers (or CNF) are provided by NIOSH. This short video from Maxxam will address the protocol for collecting two filter samples – one for characterization using TEM and one for analysis of elemental carbon. Collecting a sample is only one component in exposure assessment; consult with an industrial hygienist experienced in conducting nanomaterial exposure assessments and risk management.
Alan Segrave is the Division Manager for the Maxxam Analytics Microscopy Laboratory. Alan has earned his B.S. in Geology from the University of Louisiana, Lafayette, and is a Professional Geologist with 29 years of experience in environmental laboratory management, consulting and business development.
Alan’s specialization is in materials characterization, asbestos and nano materials by electron microscopy. His extensive knowledge in mineral identification has allowed him to serve as an expert witness in product liability and personal injury cases in numerous states and federal jurisdictions.
Since 1992, he is an active member of the American Society for Testing and Materials (ASTM), and currently serves as Vice Chairman of D22.07, Sampling and Analytical Committee for Asbestos.
He is the principal author of ASTM D7521-13 “Test Method for Determination of Asbestos in Soils,” and has assisted in developing ASTM 5755/5756 methods. In addition, he is a technical member of ASTM Committee E54 on Nanotechnology and AIHA Nanotechnology Working Group; plus he is also a member of the Expert Panel for Talc for the United States Pharmacopeia, where methods are being developed for quantifying asbestos in talc.
His expertise also pertains to nanomaterials characterization and method development by electron microscopy – examples of materials, include carbon nanotubes, graphene, titanium dioxide and other metal oxides.
Given Alan’s in-depth knowledge of asbestos mineral identification in air, dust, water and bulk matrices, he has been retained as an expert witness by both plaintiff and defense firms for matters involving asbestos-related product liability, personal injury and product identification cases. He has provided his subject matter expertise in various states, including California, Colorado, Georgia, Illinois, Louisiana, Massachusetts, Missouri, New Jersey, New York, Ohio, Pennsylvania, South Carolina and West Virginia.