摘要
针对纺织品水解和游离甲醛检测标准GB/T 2912.1—2009《纺织品甲醛的测定第1部分:游离和水解的甲醛(水萃取法)》中的显色反应,探讨了影响甲醛-乙酰丙酮显色速率的关键因素。通过单因素反应动力学研究,在控制不同温度、pH值和甲醛浓度的条件下,分析了这些因素对显色反应速率的影响。基于试验结果选取了优化后的两组显色参数(50℃×17 min、60℃×9 min)进行回收率试验以验证其有效性。结果表明,两组优化后的显色参数均表现出良好的回收率(>90%),通过20个样本的相对标准偏差测试证实其准确度(RSD<5%)。通过优化显色反应条件,显著缩短了显色时间。
In response to the color reaction for the detection of hydrolysis and free formaldehyde in textiles in the standard GB/T 2912.1—2009 “Determination of Formaldehyde in Textiles Part 1: Free and Hydrolyzed Formaldehyde(Water Extraction Method)”, the key factors affecting the color development rate of formaldehyde acetylacetone are studied. Through single factor reaction kinetics, the influence of different temperature, pH value, and formaldehyde concentration on the color reaction rate is analyzed. Subsequently, based on the experimental results, two sets of color rendering parameters(50 ℃×17 min and 60 ℃×9 min) are selected, and recovery experiments are conducted to verify their effectiveness. After experimental verification, both optimized color parameters show good recovery rates(>90%), and their accuracy is further confirmed by testing the relative standard deviation of 20 samples(RSD<5%). By optimizing the conditions of the color reaction, the color development time is significantly shortened.
作者
王田田
李海
田姝
张志颖
WANG Tiantian;LI Hai;TIAN Shu;ZHANG Zhiying(Jiangsu Textiles Quality Services Inspection Testing Institute,Nanjing 210007,Jiangsu,China)
出处
《上海纺织科技》
2024年第9期53-57,63,共6页
Shanghai Textile Science & Technology
关键词
纺织品
甲醛
反应动力学
回收率
相对标准偏差
textiles
formaldehyde
reaction kinetics
recovery rate
relative standard deviation
