摘要
为测定涤纶织物中的锑含量,采用高温高压消解法对涤纶织物进行消解,通过测定消解液中的锑浓度,进而确定涤纶织物中的锑含量。通过研究消解液种类、消解温度和消解时间对涤纶织物消解程度的影响,确定了最佳的消解工艺。利用ICP-AES测定消解液中的锑含量,以确定涤纶织物中的锑残留量,并对试验条件下该方法的可靠性进行评价。结果表明,最佳消解工艺是以4份(体积)浓硝酸+1份(体积)双氧水为消解液,在200℃下恒温消解12 h。测试得消解液中锑含量为0.038 mg,即涤纶织物中的锑含量为95μg/g。该方法的检出限为0.02 mg/L,锑的加标回收率在82.9%~114.3%之间,试验准确性较高。
Polyester is digested in high pressure and temperature conditions and the concentration of an- timony in the digestion solution is measured to determine the antimony content in polyester fabrics. The effects of type of digestion solution, digestion temperature and time are studied to determine the optimal digestion process. The concentration of antimony in solution is measured by ICP-AES to confirm the content of antimony in polyester fabric and the reliability is assessed in experimental conditions. As a result, the optimum digestion process is ascertained that the digestion solution is determined as 4 volume concentrated nitric acid and 1 volume hydrogen peroxide, and digesting at 200℃ for 12 h. The concentration of antimony in the solution is 0.038 mg and the content in polyester fabrics is 95 μg/g. The detection limit is 0.02 mg/L, the recovery rate is between 82.9% and 114.3% indicating the high accuracy.
出处
《印染》
北大核心
2017年第22期51-54,共4页
China Dyeing and Finishing
