Residual Isocyanates in Medical Devices and Products: A Qualitative and Quantitative Assessment

Gillian Franklin, Homero Harari, Samavi Ahsan, Dhimiter Bello, David A. Sterling, Jonathan Nedrelow, Scott Raynaud, Swati Biswas, Youcheng Liu

Research output: Contribution to journalArticle

Abstract

We conducted a pilot qualitative and quantitative assessment of residual isocyanates and their potential initial exposures in neonates, as little is known about their contact effect. After a neonatal intensive care unit (NICU) stockroom inventory, polyurethane (PU) and PU foam (PUF) devices and products were qualitatively evaluated for residual isocyanates using Surface SWYPE. Those containing isocyanates were quantitatively tested for methylene diphenyl diisocyanate (MDI) species, using UPLC-UV-MS/MS method. Ten of 37 products and devices tested, indicated both free and bound residual surface isocyanates; PU/PUF pieces contained aromatic isocyanates; one product contained aliphatic isocyanates. Overall, quantified mean MDI concentrations were low (4,4‘-MDI = 0.52 to 140.1 pg/mg) and (2,4‘-MDI = 0.01 to 4.48 pg/mg). The 4,4‘-MDI species had the highest measured concentration (280 pg/mg). Commonly used medical devices/products contain low, but measurable concentrations of residual isocyanates. Quantifying other isocyanate species and neonatal skin exposure to isocyanates from these devices and products requires further investigation.

Original languageEnglish
JournalEnvironmental Health Insights
Volume10
DOIs
StatePublished - 1 Jan 2016

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Isocyanates
Polyurethanes
Equipment and Supplies
Foams
Intensive care units
foam
Skin
neonate
skin
product
Neonatal Intensive Care Units
4,4'-diphenylmethane diisocyanate

Keywords

  • asthma
  • isocyanates
  • medical devices and products
  • methylene diphenyl diisocyanate
  • neonatal exposure
  • skin sensitization

Cite this

Franklin, Gillian ; Harari, Homero ; Ahsan, Samavi ; Bello, Dhimiter ; Sterling, David A. ; Nedrelow, Jonathan ; Raynaud, Scott ; Biswas, Swati ; Liu, Youcheng. / Residual Isocyanates in Medical Devices and Products : A Qualitative and Quantitative Assessment. In: Environmental Health Insights. 2016 ; Vol. 10.
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Residual Isocyanates in Medical Devices and Products : A Qualitative and Quantitative Assessment. / Franklin, Gillian; Harari, Homero; Ahsan, Samavi; Bello, Dhimiter; Sterling, David A.; Nedrelow, Jonathan; Raynaud, Scott; Biswas, Swati; Liu, Youcheng.

In: Environmental Health Insights, Vol. 10, 01.01.2016.

Research output: Contribution to journalArticle

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AU - Franklin, Gillian

AU - Harari, Homero

AU - Ahsan, Samavi

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AU - Sterling, David A.

AU - Nedrelow, Jonathan

AU - Raynaud, Scott

AU - Biswas, Swati

AU - Liu, Youcheng

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