Chemiresistor array with nanocluster interfaces as a micro-GC detector

Details

• Personal Author:
  Matzger AJ ; Rowe M ; Steinecker WH ; Zellers ET
• Description:
  An integrated array of chemiresistor (CR) microsensors employing a novel set of Au-thiolate monolayer-protected nanoclusters (MPN) as interface materials has been developed and tested as an ultra-low-dead-volume detector for a micro gas chromatograph (/spl mu/GC). Six MPNs 3-5 nm in mean core diameter each with a different type of organo-thiolate ligand were synthesized by a single-phase method, spray cast onto interdigital electrodes, and exposed to several organic vapors. Four of these MPNs were coated onto the same CR array and used as a detector for a conventional GC to analyze a mixture of 15 vapors. The array provides characteristic vapor response patterns, linear calibration curves, and good overall sensitivity, which increases at lower temperatures and detector-cell flow rates. On the basis of injected mass, GC responses indicate that detection limits in the low part-per-trillion range are achievable from preconcentrated sample volumes of <1 L. Sensitivity does not vary significantly among similarly coated CRs having electrode spacings ranging from 0.1-15 /spl mu/m consistent with a response model based on bulk-film swelling. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Occupational Health Safety Solvents Temperature
• Keywords:
  Analytical-processes Gas-chromatography Models Nanotechnology Organic-compounds Organic-vapors Sampling Temperature-effects Vapors
• ISBN:
  9780780377318
• Publisher:
  Institute of Electrical and Electronics Engineers (IEEE)
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  Michigan ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2
• NIOSHTIC Number:
  nn:20042746
• Citation:
  Transducers'03: Proceedings of the 12th International Conference, Transducers, Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers, June 8-12, 2003, Boston, Massachusetts. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2003 Jun; 2:1343-1346
• Federal Fiscal Year:
  2003
• Performing Organization:
  University of Michigan, Ann Arbor
• Peer Reviewed:
  False
• Start Date:
  20020601
• Source Full Name:
  Transducers'03: Proceedings of the 12th International Conference, Transducers, Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers, June 8-12, 2003, Boston, Massachusetts
• End Date:
  20160430
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:64c565e2219614e89a7e4a0380148b6a873690dd3d693a5c4ac2e42c791b2fbf5199b5df879e292717124016d9d5a11f820180a09f2f208b641479610b60d30f
• Download URL:
  https://stacks.cdc.gov/view/cdc/194875/cdc_194875_DS1.pdf
• File Type:
  [PDF - 362.59 KB ]