Analysis of Results on the Migration of Specific Elements in Toys through Rope Extraction Experiments Under Different Conditions
The migration of specific elements in toy samples refers to the extraction of specific elements from toy samples under the condition of continuous contact with gastric acid after swallowing.The national standard GB 6675.4-2014 and the EU standard BS EN71-3:2019+A1:2021 specify the detection methods and limits.For toy samples containing oil,grease or wax,before simulation testing,the national standard stipulates that the sample should be wrapped in filter paper and removed with n-hexane;In the EU standard,it is stipulated that the sample should be wrapped in filter paper,and an appropriate volume of isooctane should be added to ensure a reflux time of no less than 60 minutes and a reflux frequency of no less than 10 times.If the above operation is completed and the sample still retains oil,grease or wax,extraction should continue until it is completely removed.This article investigates the oil removal effects of different reagents,extraction times,and volumes of rope extraction devices.While meeting the specific element migration requirements in national and EU standards,it provides a fast and effective method for the removal of oil,grease,or wax from toy samples.
toy samplesspecific element migrationoilgreasewaxsoxhlet extraction
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