XIANGNian-nian,HUANGZhao-yan,LIUXu,et al.Ion Chromatography for Simultaneous Determination of Industrial Grade Sodium Acetate and Citric Acid[J].China Water & Wastewater,2023,39(22):150-154.
Ion Chromatography for Simultaneous Determination of Industrial Grade Sodium Acetate and Citric Acid
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第22期
Page:
150-154
Column:
Date of publication:
2023-11-17
- Keywords:
- ion chromatography; sodium acetate; citric acid
- Abstract:
- This paper established a method for simultaneous determination of industrial grade sodium acetate and citric acid based on ion exchange chromatography. Acetate and citrate were separated on Melrose A Supp 5-250/4.0 inorganic analysis column with sodium carbonate and sodium bicarbonate solution as eluent and eventually determined by suppressed conductance detector. Under these conditions, the separation efficiency of sodium acetate and citric acid was high, and the peak area of acetate and citrate showed good linearity in the range of 1.00-20.0 mg/L, and the correlation coefficients was no less than 0.999. The detection limit of the method was 0.15 mg/L, the relative standard deviation of 6 repetitions was less than 5%, and the spiked recoveries were between 98.0% and 102%. Compared with titration detection method, there was no significant difference in detection results. And the pretreatment of this ion chromatography method was more simple, the qualitative and quantitative analysis of acetate and citrate in samples was more quickly, and the detection efficiency was increased by 4 times. The method is sensitive, easy to operate and accurate, which is suitable for the determination of industrial grade sodium acetate and citric acid.
Last Update:
2023-11-17