Yutaka Abe, T. Abe, H. Ohno, Kimiyasu Ohashi, A. Ozaki, Takamitsu Kazama, Yohei Kataoka, Kumi Suzuki, Shinichiro Nagai, Kotaro Hanazawa, Masato Hayakawa, Naoyuki Hirabayashi, Miku Yamaguchi, Kazunari Watanabe, M. Mutsuga, Kyoko Sato
{"title":"[厨房洗涤剂中甲醇含量测定改进方法评价的实验室间研究]。","authors":"Yutaka Abe, T. Abe, H. Ohno, Kimiyasu Ohashi, A. Ozaki, Takamitsu Kazama, Yohei Kataoka, Kumi Suzuki, Shinichiro Nagai, Kotaro Hanazawa, Masato Hayakawa, Naoyuki Hirabayashi, Miku Yamaguchi, Kazunari Watanabe, M. Mutsuga, Kyoko Sato","doi":"10.3358/shokueishi.63.97","DOIUrl":null,"url":null,"abstract":"We modified a method for determining methanol content in detergents used in kitchens. Furthermore, an inter-laboratory study was conducted in 10 laboratories to validate the modified method. In this study, two concentrations of samples were blindly coded. Each laboratory determined the methanol content in each sample according to a protocol. The determined values were statistically analyzed according to an international harmonized guideline. HorRat values were calculated based on the reproducibility relative standard deviation (RSDR) which was estimated from the interlaboratory study, and predicted RSDR calculated from the Horwitz/Thompson equation. The HorRat values of the two samples were 0.8 and 1.8, meeting the performance criteria of less than 2 set by the Codex Alimentarius for analytical method approval. These results confirm that this modified analytical method shows good performance as an analytical method for determining methanol content in kitchen detergents.","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"48 1","pages":"97-103"},"PeriodicalIF":0.2000,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Inter-laboratory Study on the Modified Method Assessment for the Determining Methanol Content in Kitchen Detergents].\",\"authors\":\"Yutaka Abe, T. Abe, H. Ohno, Kimiyasu Ohashi, A. Ozaki, Takamitsu Kazama, Yohei Kataoka, Kumi Suzuki, Shinichiro Nagai, Kotaro Hanazawa, Masato Hayakawa, Naoyuki Hirabayashi, Miku Yamaguchi, Kazunari Watanabe, M. Mutsuga, Kyoko Sato\",\"doi\":\"10.3358/shokueishi.63.97\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We modified a method for determining methanol content in detergents used in kitchens. Furthermore, an inter-laboratory study was conducted in 10 laboratories to validate the modified method. In this study, two concentrations of samples were blindly coded. Each laboratory determined the methanol content in each sample according to a protocol. The determined values were statistically analyzed according to an international harmonized guideline. HorRat values were calculated based on the reproducibility relative standard deviation (RSDR) which was estimated from the interlaboratory study, and predicted RSDR calculated from the Horwitz/Thompson equation. The HorRat values of the two samples were 0.8 and 1.8, meeting the performance criteria of less than 2 set by the Codex Alimentarius for analytical method approval. These results confirm that this modified analytical method shows good performance as an analytical method for determining methanol content in kitchen detergents.\",\"PeriodicalId\":54373,\"journal\":{\"name\":\"Food Hygiene and Safety Science\",\"volume\":\"48 1\",\"pages\":\"97-103\"},\"PeriodicalIF\":0.2000,\"publicationDate\":\"2022-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Food Hygiene and Safety Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.3358/shokueishi.63.97\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"FOOD SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Hygiene and Safety Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.3358/shokueishi.63.97","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}
[Inter-laboratory Study on the Modified Method Assessment for the Determining Methanol Content in Kitchen Detergents].
We modified a method for determining methanol content in detergents used in kitchens. Furthermore, an inter-laboratory study was conducted in 10 laboratories to validate the modified method. In this study, two concentrations of samples were blindly coded. Each laboratory determined the methanol content in each sample according to a protocol. The determined values were statistically analyzed according to an international harmonized guideline. HorRat values were calculated based on the reproducibility relative standard deviation (RSDR) which was estimated from the interlaboratory study, and predicted RSDR calculated from the Horwitz/Thompson equation. The HorRat values of the two samples were 0.8 and 1.8, meeting the performance criteria of less than 2 set by the Codex Alimentarius for analytical method approval. These results confirm that this modified analytical method shows good performance as an analytical method for determining methanol content in kitchen detergents.
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