This application note describes the method for analyzing brenzcatechine (TBC) additive in styrene using Agilent HPLC.
The document details a High-Performance Liquid Chromatography (HPLC) method for analyzing Brenzcatechol (TBC), used as an antioxidant in polymers, within styrene samples. The concentration range of interest is between 10 and 100 ppm.
To achieve high sensitivity capable of detecting 1 ng with a signal-to-noise ratio of 2, the method utilizes 2.1 mm columns (specifically Hypersil ODS). The setup includes an Agilent 1100 Series system equipped with a degasser, binary pump, autosampler, thermostatted column compartment, and diode array detector.
The concentration varies between 10 and 100 ppm.
2.1mm columns were used in order to improve sensitivity.
The LOD is 1 ng or 1 ppm.