Ohno Hiroyuki, Suzuki Masako, Kawamura Yoko
Nagoya City Public Health Research Institute, Mizuho-ku, Nagoya, Japan.
Shokuhin Eiseigaku Zasshi. 2011;52(1):66-70. doi: 10.3358/shokueishi.52.66.
The amount of evaporation residue was investigated as an index of total amount of non-volatile substances that migrated from plastic kitchen utensils into four food-simulating solvents (water, 4% acetic acid, 20% ethanol and heptane). The samples were 71 products made of 12 types of plastics for food contact use. The amount was determined in accordance with the Japanese testing method. The quantitation limit was 5 µg/mL. In the cases of polyethylene, polypropylene, polystyrene, acrylonitrile styrene resin, acrylonitrile butadiene styrene resin, polyvinyl chloride, polyvinylidene chloride, polymethylpentene, polymethylmethacrylate and polyethylene terephthalate samples, the amount was highest for heptane and very low for the other solvents. On the other hand, in the cases of melamine resin and polyamide samples, the amount was highest for 4% acetic acid or 20% ethanol and lowest for heptane. These results enabled the selection of the most suitable solvent, and the rapid and efficient determination of evaporation residue.
对蒸发残渣量进行了研究，以此作为从塑料厨房用具迁移到四种食品模拟溶剂（水、4%乙酸、20%乙醇和庚烷）中的非挥发性物质总量的指标。样品为71种由12种食品接触用塑料制成的产品。该量按照日本测试方法测定。定量限为5μg/mL。在聚乙烯、聚丙烯、聚苯乙烯、丙烯腈苯乙烯树脂、丙烯腈丁二烯苯乙烯树脂、聚氯乙烯、聚偏二氯乙烯、聚甲基戊烯、聚甲基丙烯酸甲酯和聚对苯二甲酸乙二酯样品的情况下，庚烷中的量最高，而在其他溶剂中的量非常低。另一方面，在三聚氰胺树脂和聚酰胺样品的情况下，4%乙酸或20%乙醇中的量最高，庚烷中的量最低。这些结果有助于选择最合适的溶剂，并快速有效地测定蒸发残渣。
