气相色谱法鉴别吗啉脂肪酸盐果蜡中的吗啉

Identification of morpholine in morpholine fatty acid salt fruit wax by gas chromatography

中文关键词:  吗啉脂肪酸盐果蜡  气相色谱法  吗啉  鉴别

英文关键词:morpholine fatty acid salt fruit wax  gas chromatography  morpholine  identification

中文摘要:

      摘 要: 目的 建立气相色谱法鉴别吗啉脂肪酸盐果蜡中的吗啉。方法 采用盐酸溶液将吗啉脂肪酸盐酸解成吗啉, 氢氧化钠溶液调节溶液酸碱度, 气相色谱-氢火焰离子化检测器测定。结果 方法的基质效应为96.67%; 样品空白、试剂空白和标准溶液空白对目标物定性不存在干扰; 不同浓度的样品在48小时内进样峰面积的偏差在±5%以内; 采用本方法对市售实际样品进行分析, 12 批次样品检出吗啉。结论 该方法干扰小、特异性强、重复性好, 前处理简单、绿色, 可为吗啉脂肪酸盐果蜡中吗啉的鉴别提供技术支撑。

英文摘要:

      ABSTRACT: Objective To establish a method for the identification of morpholine in morpholine fatty acid salt fruit wax by gas chromatography. Methods Morpholine fatty acid salt was hydrolyzed to morpholine using hydrochloric acid solution, and the pH of the solution was adjusted with sodium hydroxide acid solution. Detection was performed using gas chromatography-hydrogen flame ionization detector. Results The matrix effect of the method was 96.67%; there was no interference from sample blanks, reagent blanks, and standard solution blanks on the qualitative analysis of the target substance; the deviation of peak area for samples of different concentrations within 48 hours was within ±5%. The method was used to analyze the actual commercial samples, and 12 batches of samples were detected morpholine. Conclusion This method has the advantages of minimal interference, strong specificity, and good repeatability. The pretreatment process is simple and environmentally friendly, providing technical support for the identification of morpholine in morpholine fatty acid salt fruit wax.