Determination of Trace Formaldehyde in Water Samples by Interfacial Chemiluminescence Method

Yangrun Feng ； Wenyuan Tan ； Dong Yuan

《International Core Journal of Engineering》 9卷4期 (2023/04) Pp. 197-204

https://doi.org/10.6919/ICJE.202304_9(4).0027

摘要

Based on gallic acid‐hydrogen peroxide‐formaldehyde chemiluminescence system, a low concentration formaldehyde detection method was established in aqueous solution by using home‐made interface Chemiluminescence tester. The influence of the concentration of gallic acid, hydrogen peroxide, sodium hydroxide and other reagents on the chemiluminescence intensity were investigated, and other parameters of the instrument were optimized. Under the optimized experimental conditions, the instrument method and phenol reagent method were compared to detect the formaldehyde content in water samples. The results showed that when 0.15 mol/L hydrogen peroxide, 0.1 mol/L sodium hydroxide and 0.030 mol/L gallic acid (containing 30% ethylene glycol and 0.40% tetrabutylammonium iodide by volume) were mixed in sequence, the length of the collecting tube was 7 cm, the formaldehyde content showed a good linear relationship in the range of 1× 10^(‐5)‐1.5 × 10^(‐3) mg/mL, the detection limit was 5.96×10^(‐5) μg/mL, and the RSD was 0.92%. However,the detection limit of phenol reagent method was 2.14×10^(‐5) μg/mL, and the RSD was 0.97%.It shows that the instrumental method has lower detection limit and higher accuracy, which meets the requirements of the determination of trace formaldehyde in water samples.

關鍵字

Interfacial Chemiluminescence ； Formaldehyde ； Gallic Acid

參考文獻

NIELSEN D, LARSEN T, WOLKOFF P. Re-evaluation of the WHO (2010) formaldehyde indoor air quality guideline for cancer risk assessment[J]. Archives of Toxicology, 2016, 91(1):35-61.

OCHOA R. Book Review: Formaldehyde, Exposure, Toxicity and Health Effects[J]. International Journal of Toxicology, 2019, 38(3):240-241.

TIAN L, CHEN F, ZHOU Q, et al. Unignorable toxicity of formaldehyde on electroactive bacteria in bioelectrochemical systems[J]. Environmental Research, 2020, 183:109143.

ZHAO Y, MAGANA C, CUI H, et al. Formaldehyde-induced hematopoietic stem and progenitor cell toxicity in mouse lung and nose[J]. Archives of Toxicology, 2020.

Jin S G, Wang H Y, Li H, et al. The Comparison between Chemical spectrophotometry and Instrument method to determine the formaldehyde concentration of the indoor air[C]//2012 International Conference on Biomedical Engineering and Biotechnology. IEEE, 2012: 1787-1790.