The matrix matches standard curves for sulfonamides including sulfanilamide as internal standard with the same concentration as that of each studied level at 5, 10, 20, 40, 60, 80 and 100 ng g−1 with satisfactory linearity range from 1 to 100 ng g−1. Concentration Vs response area was directly plotted to prepare the calibration curves for studied sulfonamides. The obtained graphs have linear least square regressions around 0.99 as listed in Table 3.The limits of detection (LOD) and limits of quantification (LOQ) were deter-mined by injecting ten replicates of multiflora black honey sample and measuring the magnitude of the signal response. We calculated experimentally the LOD as three times and LOW as 10 times, the signal-to-noise ratio (S/N). The obtained values of LOD and LOQ were remained around 1 and 3 ng g−1, respectively and are listed in Table 3.