- P-ISSN 1225-0163
- E-ISSN 2288-8985
Analytical methods of thromboxane <TEX>$B_2(TXB_2)$</TEX> using various techniques of Fast Atom Bombardment mass spectrometry (FAB MS) were studied, static FAB condition was investigated to obtain linear response curve using docosanoic acid as a internal standard. For maximum sensitivity, a continuos-flow(CF-) FAB MS by selected-ion monitoring(SIM) with devised sample introduction system, has been developed to quantiate thromboxane <TEX>$B_2$</TEX> in biological sample. Instrumental parameters affecting sensitivity, reproducibility has been studied. The method has been optimized with respect to the eluent, 0.75% glycerol(in EtOH v/v) and flow rate of <TEX>$3.7{\mu}l/min.$</TEX> Under the condition, detection limits were below 10pg in SIM mode and a good linear relationship between dose and response was achieved.