Figure 1. Structures of BISGMA, BFDGE, metabolites, and respective ammoniated mass from LC/MS analyses. Finnigan TSQ-700 mass spectrometer, Digital Unix work station, Finnigan software ICIS ver. 8.3, HP 1100 binary pump, Perkin Elmer autosampler, and Eppendorf TC-50 column heater. Chromatographic separation was achieved on a Metachem pre-column filter, a 2 x 4 mm C18 guard column, and a 2 x 30 mm C18 3µ Luna analytical column by Phenomenex at 40°C. The MS ionization mode was positive electrospray. The manifold pressure was 2 x 10^–6 torr. The ESI spray voltage was 4.5 kV, and the current was 10 µA. The capillary temperature was 200°C. The electron multiplier was set at 1600 V. The CID argon gas pressure was 1.7 mTorr, and the CID offset was -18.0 volts. The injection volume was 20 µL, and the split ratio was 1:3.