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漆酚是生漆的主要成分。测定漆酚的方法有氢氧化钡容量法、重量法和络合比色法。容量法易受氧化和酸的干扰,重量法手续麻烦,重复性差。络合比色法较准确,但需光学仪器和标准物质,还怕有色杂质的干扰。本工作研究了生漆在氢氧化钠水溶液催化下吸氧的规律,建立了测定漆酚的新方法——吸氧法,方法简便、经济、快速和准确,在实际应用中将有重要意义。
Urushiol is the main component of lacquer. Determination of urushiol barium hydroxide capacity method, gravimetric method and colorimetric method. Volume method susceptible to oxidation and acid interference, gravimetric procedures cumbersome, poor reproducibility. Complex colorimetric method is more accurate, but the need for optical instruments and standard materials, the fear of colored impurities interference. In this work, the law of oxygen absorption of raw lacquer catalyzed by sodium hydroxide aqueous solution was studied. A new method for measuring urushiol was established - oxygen-absorbing method. The method was simple, economical, rapid and accurate, which would be of great significance in practical application.