A fast and accurate method for the determination of controlled dyes in textiles is described. The method is based on LC/MS/MS combined with MRM using a triple quadrupole mass spectrometer equipped with an electrospray ionization (ESI) source.
The document details a method for screening and quantifying harmful dyes, such as aromatic amines, disperse dyes, and direct dyes, found in textile products. It highlights the use of electrospray ionization (ESI) combined with multiple reaction monitoring (MRM) to identify these compounds efficiently.
Shear the textile into 1.0 g pieces, weigh them, add 10 mL of methanol, and extract the capped sample in an ultrasonic bath at 70°C for 10 minutes.
Rinse the API capillary with methanol for two or three minutes while the system is under full vacuum.
The system can quantitatively analyze these compounds in the desired range from 500 to 1500 ppb.