Research on Ion Chromatography-based Integrated Water Quality Indicators Technology
An efficient method using ion chromatography has been developed for the simultaneous determination of 11 types of chemicals in drinking water,including 5 types of anions(perchlorate,fluoride,chloride,nitrate,sulfate),5 types of disinfection by-products(bromate,chlorite,chlorate,dichloroacetic acid,trichloroacetic acid),and glyphosate.Gradient elution was performed using potassium hydroxide(KOH)solution as the eluent.Under the conditions of a flow rate of 1 mL·min-1,column temperature of 25℃,and injection volume of 500 μL,all chemicals tested were separated in about 45 minutes.The separation degree of 11 types of chemical substances is good,and the correlation coefficients are with a value of 0.999 or above.The lower and upper limits of detection for this method range from 0.4 μg·L-1 to 30.9 μg·L-1.The results of the spiked experiment showed that the average recovery rate of the 11 types of chemical substances ranged from 94.25%to 105.76%,with a relative standard deviation of 0.08%to 4.94%.This innovative approach not only improves the efficiency and accuracy of water quality monitoring,but also provides strong technical support for safeguarding the safety of drinking water.
Integrated detection technology of water qualityion chromatographygradient elutionwater quality monitoring
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