Analytical method of IPBC by HPLC and leachability in treated wood and bamboo

Han Liping; Wang Qingping; Zhang Jingpeng; Jiang Mingliang; Cao Jinzhen

doi:10.12171/j.1000-1522.20210049

Journal of Beijing Forestry University > 2021 > 43(5): 140-146. > DOI: 10.12171/j.1000-1522.20210049

Han Liping, Wang Qingping, Zhang Jingpeng, Jiang Mingliang, Cao Jinzhen. Analytical method of IPBC by HPLC and leachability in treated wood and bamboo[J]. Journal of Beijing Forestry University, 2021, 43(5): 140-146. DOI: 10.12171/j.1000-1522.20210049

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Analytical method of IPBC by HPLC and leachability in treated wood and bamboo

1.
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
2.
School of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China

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Received Date: February 09, 2021
Revised Date: March 09, 2021
Available Online: April 08, 2021
Published Date: May 26, 2021

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Abstract

Abstract

Objective In order to explore the leachability of iodopropynyl butylcarbamate (IPBC) formulations, an analytical method of IPBC by high performance liquid chromatography (HPLC) was established and used for the determination of IPBC leaching rate of treated wood and bamboo, aiming to determine an analytical method of IPBC by HPLC and the leachability of IPBC.
Method UV detector and C₁₈ column (150 mm × 4.6 mm (inner diameter), 5 μm) were used for detection. The chromatographic conditions, such as detection wavelength, mobile phase composition and ratio, column temperature and mobile phase flow rate were investigated and discussed, so as to optimize the chromatographic conditions suitable for the analysis of IPBC. The IPBC standard solution was detected by external standard method. The standard curve, precision and accuracy were evaluated. The leaching procedure was adopted according to the Chinese standard method. The IPBC leachability rate was tested in treated wood and bamboo by the established analytical method.
Result The chromatographic conditions for the determination of IPBC content by HPLC were as follows: flow phase acetonitrile-water (60∶40), flow rate 1.0 mL/min, UV detection wavelength 200 nm. There was a good linear relationship between IPBC concentration and chromatographic peak area in the range of 5−80 mg/L for IPBC standard solution. The correlation coefficient was r = 0.999 4. The standard deviation and coefficient of variation were 0.05% and 0.50%, respectively. The recovery rates were 99.5%−100.4%. The leaching rate of IPBC in Masson pine and radiation pine decreased with the increase of IPBC concentration, the leaching rate of Masson pine ranged from 0.11% to 1.99%, the leaching rate of radiation pine ranged from 0.10% to 0.48%. In bamboo, the leaching rate of IPBC increased with the increase of IPBC concentration, with the leaching rate ranged from 3.11% to 7.08%. The average leaching rate of IPBC treated bamboo was higher than IPBC/PPZ-TEB. The leaching rate of IPBC micro emulsion in treated wood was higher than that dissolved with ethanol. The leaching rate of IPBC with surface coating of hard wax oil in treated wood was lower than that without surface coating.
Conclusion The determination method of IPBC content by HPLC with good correlation, high precision and recovery rate could be used for the analysis of IPBC content. The leaching rates of IPBC treated masson pine, radiant pine and bamboo were very low as less than 7.1%. The leaching rate of IPBC could be decreased by mixing with other agents or surface coating with hard wax oil.
- wood and bamboo,
- IPBC,
- HPLC,
- leaching resistance

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References (20)

References

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Analytical method of IPBC by HPLC and leachability in treated wood and bamboo