Details

Autor(en) / Beteiligte

• WATANABE, Kazunari
• MUTSUGA, Motoh
• ABE, Takashi
• ABE, Tomoyuki
• ABE, Yutaka
• OHSAKA, Ikue
• OHNO, Haruka
• OHNO, Hiroyuki
• OHNO, Yuichiro
• OZAKI, Asako
• KAKIHARA, Yoshiteru
• KOBAYASHI, Hisashi
• KONDO, Takahide
• SHIBATA, Hiroshi
• SHIRONO, Katsuhiro
• SEKIDO, Haruko
• SONOBE, Hironori
• TAKASAKA, Noriko
• TAJIMA, Yoshiyasu
• TANAKA, Aoi
• TANAKA, Hideyuki
• NAKANISHI, Toru
• NOMURA, Chie
• HANEISHI, Nahoko
• HAYAKAWA, Masato
• HIKIDA, Akinori
• MIURA, Toshihiko
• YAMAGUCHI, Miku
• SATO, Kyoko
• AKIYAMA, Hiroshi

Titel

Interlaboratory Study on Caprolactam Test for Food-Contact Nylon Products

Ist Teil von

• Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi), 2016/12/25, Vol.57(6), pp.222-229

Ort / Verlag

Japan: Japanese Society for Food Hygiene and Safety

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• 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.