With the continuous improvement of environmental protection and health requirements,there are higher requirements for the applicability and improved stability of the determination of volatile organic compounds in coatings.This paper improves the experimental method and data processing method,making the determination of water content in coatings using gas chromatography more rapid and accurate.The improved method effectively reduces the experimental error,with good reproducibility and accuracy.In addition,by using external standard method and regression analysis,a standard working curve for water content is obtained,with correlation coefficient R2=0.999 6,adjusted R2=0.999 5,repeatability of 1.6％,reproducibility of 3.5％,and recovery rate of 88％-104％.
维普
万方数据