title: Refinement of the Nanoparticle Emission Assessment Technique into the Nanomaterial Exposure Assessment Technique (NEAT 2.0).
abstract: Engineered nanomaterial emission and exposure characterization studies have been completed at more than 60 different facilities by the National Institute for Occupational Safety and Health (NIOSH). These experiences have provided NIOSH the opportunity to refine an earlier published technique, the Nanoparticle Emission Assessment Technique (NEAT 1.0), into a more comprehensive technique for assessing worker and workplace exposures to engineered nanomaterials. This change is reflected in the new name Nanomaterial Exposure Assessment Technique (NEAT 2.0) which distinguishes it from NEAT 1.0. NEAT 2.0 places a stronger emphasis on time-integrated, filter-based sampling (i.e., elemental mass analysis and particle morphology) in the worker's breathing zone (full shift and task specific) and area samples to develop job exposure matrices. NEAT 2.0 includes a comprehensive assessment of emissions at processes and job tasks, using direct-reading instruments (i.e., particle counters) in data-logging mode to better understand peak emission periods. Evaluation of worker practices, ventilation efficacy, and other engineering exposure control systems and risk management strategies serve to allow for a comprehensive exposure assessment.
authors.affiliation: a National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention , Cincinnati , Ohio.
authors.forename: Adrienne C
authors.initials: AC
authors.lastname: Eastlake
authors.affiliation: a National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention , Cincinnati , Ohio.
authors.forename: Catherine
authors.initials: C
authors.lastname: Beaucham
authors.affiliation: b HWC , Washington , DC (formerly of NIOSH).
authors.forename: Kenneth F
authors.initials: KF
authors.lastname: Martinez
authors.affiliation: a National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention , Cincinnati , Ohio.
authors.forename: Matthew M
authors.initials: MM
authors.lastname: Dahm
authors.affiliation: c Bureau Veritas North America, Inc. , Houston , Texas (formerly of NIOSH).
authors.forename: Christopher
authors.initials: C
authors.lastname: Sparks
authors.affiliation: a National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention , Cincinnati , Ohio.
authors.forename: Laura L
authors.initials: LL
authors.lastname: Hodson
authors.affiliation: a National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention , Cincinnati , Ohio.
authors.forename: Charles L
authors.initials: CL
authors.lastname: Geraci
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods*; D006801:Humans; D019570:Inhalation Exposure / Q000032:analysis; D049329:Nanostructures / Q000032:analysis*; D009314:National Institute for Occupational Safety and Health, U.S.; D016273:Occupational Exposure / Q000032:analysis*; D016272:Occupational Health; D018570:Risk Assessment; D014481:United States; D014691:Ventilation; D017132:Workplace
chemical_list: D000395:Air Pollutants, Occupational
keywords: Emission; NEAT; nanomaterial; occupational exposure assessment; sampling