Interlaboratory Study on Caprolactam Test for Food-Contact Nylon Products
| Autor: | Hiroshi Akiyama, Miku Yamaguchi, Katsuhiro Shirono, Toshihiko Miura, Yoshiyasu Tajima, Hiroshi Shibata, Yoshiteru Kakihara, Chie Nomura, Hiroyuki Ohno, Hideyuki Tanaka, Motoh Mutsuga, Hironori Sonobe, Aoi Tanaka, Kazunari Watanabe, Toru Nakanishi, Kyoko Sato, Hisashi Kobayashi, Takahide Kondo, Haruko Sekido, Noriko Takasaka, Tomoyuki Abe, Yutaka Abe, Nahoko Haneishi, Asako Ozaki, Akinori Hikida, Takashi Abe, Ikue Ohsaka, Yuichiro Ohno, Masato Hayakawa, Haruka Ohno |
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| Rok vydání: | 2016 |
| Předmět: |
Chromatography
Gas Food Safety Food standards 02 engineering and technology 01 natural sciences Gas Chromatography-Mass Spectrometry chemistry.chemical_compound Caprolactam Food sanitation Mathematics Reproducibility Chromatography Food contact 010401 analytical chemistry Food Packaging General Medicine Repeatability Test method Legislation Food 021001 nanoscience & nanotechnology Cooking and Eating Utensils Absolute calibration 0104 chemical sciences Nylons Spectrometry Fluorescence chemistry 0210 nano-technology Laboratories Food Analysis |
| Zdroj: | Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan. 57(6) |
| ISSN: | 1882-1006 |
| Popis: | The Japanese Food Sanitation Law sets a limit on the migration level of caprolactam for food-contacting nylon products. Here, we carried out an interlaboratory study in twenty laboratories to evaluate the performance of the official GC-FID test method and a GC-MS method as an alternative test method to the official method. Each laboratory quantified caprolactam in three test solutions in 20% ethanol as blind duplicates using GC-FID or GC-MS. The official method (GC-FID with absolute calibration) gave trueness, repeatability (RSDr) and reproducibility (RSDr) values of 96-97%, 3.3-5.4% and 4.0-6.7%, respectively. These values met the target criteria (trueness: 80-110%, RSDr: 10%, RSDr: 25%). The performance of the method was further improved by the introduction of heptalactam as an internal standard. As for GC-MS method, some values of the RSDr exceeded 10% when absolute calibration was used. However, when an internal standard was introduced, the trueness, RSDr and RSDr of GC-MS method were all acceptable at 94-96%, 2.0-4.4% and 7.0-9.4%, respectively. Therefore, GC-MS with an internal standard is available as an alternative test method to the official method. |
| Databáze: | OpenAIRE |
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