This article describes a method for screening for EU banned dyes in textiles using the Agilent 1120 Compact LC with an Agilent 6140 Single Quadrupole LC/MS system and the Analytical Studio Browser software. The method allows for quick identification of samples that fail regulatory requirements, increasing productivity.
The document details a modified literature method for screening EU-banned azo dyes in textiles. The process involves reducing the dyes to aromatic amines, which are then extracted and analyzed using an Agilent 1120 Compact LC coupled to an Agilent 6140 Single Quadrupole LC/MS system.
The analysis utilizes Analytical Studio Browser (ASB) software to rapidly identify samples that exceed regulatory limits for carcinogenic aromatic amines. The method employs a specific gradient run on an Agilent ZORBAX Eclipse Plus C18 column and operates the mass spectrometer in time-programmed SIM mode.
| Column | Agilent ZORBAX Eclipse Plus C18, 150 mm x 3.0 mm, 3.5 um |
|---|---|
| Flow rate | 0.7 mL/min |
| Injection volume | 5 uL |
| Column temperature | 30 C |
| Detection wavelength (VWD) | 254 nm |
The concentration should not exceed 30 ppm for each amine.
The EU has listed 22 aromatic amines as potential carcinogens.
Analytical Studio Browser (ASB) allows quick visual identification of samples that exceed regulatory requirements.