文献类型：期刊文献

中文题名：气相色谱-质谱法测定分散剂中喹啉含量的不确定性评估

英文题名：Uncertainty evaluation for determination of quinoline in dispersing agents by gas chromatography-mass spectrometry

作者：张云[1];叶琼[3];胡玲玲[1];张连阳[2];周金丽[1];赵春磊[4]

机构：[1]绍兴文理学院纺织服装学院,浙江绍兴312000;[2]绍兴文理学院浙江省清洁染整技术研究重点实验室,浙江绍兴312000;[3]绍兴市质量技术监督检测院,浙江绍兴312000;[4]绍兴兴明染整有限公司,浙江绍兴312072

年份：2023

卷号：31

期号：5

起止页码：215

中文期刊名：现代纺织技术

外文期刊名：Advanced Textile Technology

收录：CSTPCD、、北大核心、北大核心2020

基金：绍兴文理学院科研项目(2022LG011);柯桥区产业关键技术攻关项目(2022JBGS109)。

语种：中文

中文关键词：气相色谱-质谱法;分散剂;喹啉;不确定度

外文关键词：gas chromatography-mass spectrometer;dispersing agent;quinoline;uncertainty

中文摘要：研究气相色谱-质谱法测定分散剂中喹啉含量的不确定度能够提高检测结果的准确性。依据CNAS-GL006—2019《化学分析中不确定度的评估指南》与JJF 1059.1—2012《测量不确定度评定与表示》对测定不确定度的相关要求,建立不确定度评定的数学模型,分析不确定度的来源。通过对各个不确定度分量的评估,合成所有的不确定度分量,得到最终的合成相对标准不确定度和扩展不确定度。结果表明:当置信区间为95%时,喹啉含量为95.36 mg kg时,扩展不确定度为6.94 mg kg。标准工作曲线的配制、标准曲线拟合和加标回收率产生的不确定度是测量不确定度的主要来源。该不确定度的评估研究可为气相色谱-质谱法测定分散剂中喹啉的含量和结果判定度提供参考。

外文摘要：As an important chemical substance,quinoline is widely used in the synthesis of various chemical products.The key raw materials for synthesizing dispersing agents contain quinoline.Due to the advantage of improving brightness and uniformity of dyestuff,dispersing agents are heavily used as additives in the process of the commercialization of disperse dye in textile dyeing and finishing industry.In addition,they also serve as an auxiliary tanning agent and a stabilizing agent in leather industry and rubber industry.At present,residual quinoline in dispersing agents cannot be effectively removed,and it will consist in down-stream products along with the application of dispersing agents.Taking the usage of disperse dye as an example,quinoline can remain on fabrics and in wastewater during dyeing and finishing processes.According to research report,it can not only cause headache,dizziness,nausea and other adverse reactions,but also has comparatively high biotoxicity to human body by the way of steam inhalation and skin contact.Meanwhile,quinoline is difficultly biodegradable and has long-time stability in environment.Therefore,it is necessary to be controlled and supervised as a poisonous chemical substance by the means of determination of quinoline in dispersing agents.The latest state standard of determination of quinoline is GB T 37505—2019 Surface Active Agents—Determination of Quinoline Content in Dispersing Agents.Evaluation uncertainty of the determination of quinoline content is beneficial to improving the reliability of the measuring result,and can provide proof for the avoidance and traceability of experimental errors.In this paper,the uncertainty that may occur in the measurement of quinoline content is evaluated.In terms of JJF 1059.1—2012 Evaluation and Expression of Uncertainty in Measurement and CNAS-GL006—2019 Guidance on Quantifying Uncertainty in Chemical Analysis,the mathematical model of uncertainty evaluation is established,the resources of the uncertainty are discerned,and the evaluation methods of each uncertainty component are proposed.Through the analysis and evaluation of each uncertainty component,all the uncertainty components are synthesized,and the synthetic relative standard uncertainty and extended uncertainty are given.It is concluded that uncertainty components associated with the purity and mass weighing of standard materials and the random factors of the repeated determination of parallel sample process have certain contribution to the gross uncertainty,and the preparation of standard working solutions,the linear fitting of standard curves,and the standard addition recovery have the great influence on the uncertainty.The analysis results from the measurement of gas chromatography-mass spectrometry show that when the confidence interval is 95%,the concentration of quinoline in the dispersing agent is 95.36 mg kg and the expanded uncertainty is 6.94 mg kg(k=2).In the process of experiment,the standard material which is given with less uncertainly of relative extension should be selected,and the analytical balance needs to be calibrated periodically.The number of unnecessary dilution step of preparing standard working solutions should be reduced.Furthermore,appropriate standard curve range,normative operation of experimenter and stable experimental environment can improve the accuracy of the measurement results.The uncertainty evaluation study can provide reference for the uncertainty evaluation of gas chromatography-mass spectrometry in the determination of quinoline content in dispersing agents.