Abstract: Objective To improve the efficiency of workplace environmental monitoring,explore an ion chromatography detection methods for simultaneously measuring six water-soluble inorganic anions in dust accumulation,including fluoride,chloride,chlorate,nitrate,sulfate,and perchlorate. Methods The samples were sequentially vortexed,sonicated,and centrifuged,and then filtered through a 0.2 μm microporous membrane and a Ba/Ag/H column before being loaded onto a computer. Effective separation was achieved using a potassium hydroxide gradient elution program on an IonPac AS19 chromatographic column. The background value was reduced by a suppressor and detected using a conductivity detector. Results The linear relationship between the six test substances was good within the concentration range of 0.100-10.000 mg/L（0.100-10.000,0.010-0.500,0.500-50.000, 0.005-0.150 mg/L）,and the correlation coefficients（r） were all greater than 0.999. The limits of detection of the method were 0.001-0.139 mg/L,and the limits of quantitation were 0.003-0.463 mg/L. The recovery rates at low,medium,and high concentration levels ranged from 83.8% to 118.3%,with relative standard deviations（RSD） of 0.064% to 3.917%. Conclusion This method has good accuracy, wide linear range,simple and fast operation,and can simultaneously determine six water-soluble inorganic anions in workplace dust accumulation.

Key words: Ion chromatography, Workplace, Dust accumulation, Water soluble inorganic anions, Simultaneous determination