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Laptop computers can release nickel and cobalt onto skin. These metals, found in 39% of tested laptops, pose a risk for individuals with metal sensitivities, necessitating regulation.

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Area of Science:

  • Materials Science
  • Dermatology
  • Environmental Health

Background:

  • Laptop computers may expose users to nickel and cobalt through skin contact.
  • Limited research has investigated metal release from various laptop brands.

Purpose of the Study:

  • To assess nickel and cobalt release from multiple laptop brands using spot tests.
  • To quantify metal release from a new laptop model using artificial sweat.

Main Methods:

  • Spot tests for nickel and cobalt on 31 laptops across five brands.
  • Artificial sweat release tests on one dismantled laptop following EN1811 standard.

Main Results:

  • 39% of laptops tested positive for nickel, and 6% for cobalt.
  • Surface nickel was transferable with repeated testing.
  • Low concentrations of nickel and cobalt were released in artificial sweat tests.

Conclusions:

  • Laptops are a potential source of skin exposure to nickel and cobalt.
  • Inclusion in REACH nickel restrictions for 'prolonged skin contact' is recommended.
  • Accumulated nickel exposure from laptops may affect sensitized individuals.