Method for simultaneously detecting 11 common substances in water body by utilizing ion chromatography

The invention discloses a method for simultaneously detecting 11 common substances in a water body by using ion chromatography. The method comprises the following steps: 1) drawing a standard curve, and calculating a regression equation; and 2) detecting the water sample to be detected, and calculating the concentrations of fluoride, chloride, nitrate, sulfate, chlorite, chlorate, bromate, nitrite, dichloroacetic acid, trichloroacetic acid and glyphosate. The ion chromatography parameters are as follows: the column temperature is 30 DEG C; the sample injection volume is 25-250 [mu] L; the flow velocity is 1.0 mL/min; according to KOH mobile phase gradient elution, the concentration is kept at 8.00 mmol/L in 0-30.00 min, the gradient starting time is 30.00 min, the ending time is 45.00 min, the mobile phase elution concentration is increased to 50 mmol/L from 8.0 mmol/L, the mobile phase elution concentration keeps 50 mmol/L from 45 min to 50 min, andthe mobile phase elution concentration keeps 8 mmol/L in 50