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Paint Spray Mass Spectrometry for the Detection of Additives from Polymers on Conducting Surfaces

Author(s): Martin R. L. Paine | Philip J. Barker | Stephen J. Blanksby

Journal: Mass Spectrometry Letters
ISSN 2233-4203

Volume: 3;
Issue: 1;
Start page: 25;
Date: 2012;

Keywords: Paint spray | Additive | Polymer | Ionzation | Mass spectrometry

Paint Spray is developed as a direct sampling ionisation method for mass spectrometric analysis of additives in polymer-based surface coatings. The technique simply involves applying an external high voltage (5 kV) to the wetted sample placed in front of the mass spectrometer inlet and represents a much simpler ionisation technique compared to those currently available.The capabilities of Paint Spray are demonstrated herein with the detection of four commercially available hindered amine light stabilisers; TINUVIN® 770, TINUVIN® 292, TINUVIN® 123 and TINUVIN® 152 directly from thermoset polyester-based coil coatings. Paint Spray requires no sample preparation or pre-treatment and combined with its simplicity – requiring no specialised equipment – makes it ideal for use by non-specialists. The application of Paint Spray for industrial use has significant potential as sample collection from a coil coating production line and Paint Spray ionisation could enable fast quality control screening at high sensitivity.
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