不同材质餐饮具阴离子合成洗涤剂残留量及放置过程中含量变化规律

Residue of Anionic Synthetic Detergent for Tableware of Different Materials and the Change Rule of Residue During Placement

目的:比较不同材质餐饮具的阴离子合成洗涤剂残留量,分析在放置过程中其含量的变化规律,为实验室合理保存样品、科学安排实验提供数据参考。方法:选取竹筷、密胺筷、陶瓷碗、密胺碗为研究对象,在相同洗涤条件下,对其阴离子合成洗涤剂的残留量进行分析。同时在常温及冷藏保存条件下,对其贮藏20个工作日的残留量变化进行跟踪监测。结果:在相同清洗条件下,竹制餐饮具的阴离子合成洗涤剂残留量高于密胺类,密胺类材质餐饮具的残留量高于陶瓷类;随着放置时间延长,残留量总体呈先上升后下降的趋势;在不同的温度条件下保存,短时间内残留量变化不大,4 d后常温保存条件下的残留量下降幅度明显大于冷藏保存的餐饮具。结论:不同材质餐饮具在相同洗涤条件下其残留量不同,且随着样品放置时间延长,检测结果也会发生变化。

Objective:This article compare the residual amount of anionic synthetic detergent in tableware of different materials,and analyze the change rule of its content during placement,in order to provide data reference for the reasonable storage of samples and scientific arrangement of experiments in the laboratory.Method:Bamboo chopsticks,melamine chopsticks,ceramic bowl and melamine bowl were selected as the research objects.Under the same washing conditions,the residues of anionic synthetic detergent were analyzed.At the same time,the changes of residues in 20 working days of storage were tracked and monitored under normal temperature and cold storage conditions.Result:Under the same cleaning conditions,the residues of anionic synthetic detergents in bamboo tableware were higher than those in melamine tableware,and those in melamine tableware were higher than those in ceramics tableware.With the extension of the storage time,the residual quantity generally increased first and then decreased.Under different temperature conditions,the residual amount did not change much in a short time,and after four days of normal temperature storage,the residual amount decreased significantly than that of refrigerated storage.Conclusion:Under the same washing conditions,the residual amount of different materials of anionic synthetic detergent is different,and the test results will change with the extension of sample placement time.