Abstract
An automatic potentiometric setting dynamic pH titration method for the determination of sodium bicarbonate in compositions of smoke-type fireworks was developed. After wetting the sample with 0.1 mL ethanol, added 60 mL of deionized water for dissolution, ultrasound for 10 min, filtered and removed the insoluble matter, and then used a potentiometric titrator to drop 0.1 mol/L of hydrochloric acid. The experimental results showed that the limit of quantitation was 0.1%, the recoveries were 96.1–104.8% and the relative standard deviation was 0.56–3.11% when the sample weigh 0.2 g. The automatic potentiometric setting dynamic pH titration method is simple to operate and can accurately and quickly determine the content of sodium bicarbonate in compositions of smoke-type fireworks.
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Acknowledgements
This work was supported by the Science and Technology Project of the General Administration of Customs, People’s Republic of China (2021HK230).
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Zhang, Ly., Liu, Jg., Han, Y. et al. Determination of sodium bicarbonate in compositions of smoke-type fireworks based on automatic potentiometric setting dynamic pH titration method. Chem. Pap. 78, 645–650 (2024). https://doi.org/10.1007/s11696-023-03099-2
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DOI: https://doi.org/10.1007/s11696-023-03099-2