{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T13:39:40Z","timestamp":1792071580789,"version":"4.4.0"},"reference-count":31,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,3,2]],"date-time":"2017-03-02T00:00:00Z","timestamp":1488412800000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003478","name":"Ministry of Health, Labour and Welfare","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003478","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Separation Science"],"published-print":{"date-parts":[[2017,3]]},"abstract":"<jats:p>In multiresidue pesticide analysis using gas chromatography, it has long been recognized that an increase in the number of pesticides present in a standard solution can result in an enhancement of the peak responses of certain pesticides. Despite being widely acknowledged, this phenomenon has been rarely studied and is poorly understood. In this study, the authors have tentatively called this phenomenon the \u201cmatrix\u2010like effect\u201d and demonstrated it clearly using gas chromatography with tandem mass spectrometry. Five selected pesticides, namely, omethoate, terbufos, malathion, procymidone, and permethrin, and four internal standard candidates, namely, triphenyl phosphate, naphthalene\u2010<jats:italic>d<\/jats:italic><jats:sub>8<\/jats:sub>, phenanthrene\u2010<jats:italic>d<\/jats:italic><jats:sub>10<\/jats:sub>, and fluoranthene\u2010<jats:italic>d<\/jats:italic><jats:sub>10<\/jats:sub>, were used to evaluate the matrix\u2010like effect following the addition of 58, 108, and 166 other pesticides. With the exception of naphthalene\u2010<jats:italic>d<\/jats:italic><jats:sub>8<\/jats:sub>, the responses of all evaluated pesticides and internal standard candidates were dramatically enhanced by the addition of up to 166 coexisting pesticides. The relative response factors of the five pesticides to each internal standard candidate were not constant under the conditions studied, meaning that these internal standard candidates did not adequately compensate for the matrix\u2010like effect, at least for the five evaluated pesticides. The results revealed that the presence of various mixtures of pesticides in standard solutions might act as an unintentional analyte protectant, that is, some sort of troublesome \u201cquasi\u2010matrix.\u201d<\/jats:p>","DOI":"10.1002\/jssc.201600942","type":"journal-article","created":{"date-parts":[[2017,1,20]],"date-time":"2017-01-20T13:33:05Z","timestamp":1484919185000},"page":"1293-1300","source":"Crossref","is-referenced-by-count":13,"title":["Evaluation of the matrix\u2010like effect in multiresidue pesticide analysis by gas chromatography with tandem mass spectrometry"],"prefix":"10.1002","volume":"40","author":[{"given":"Kazuhiko","family":"Akutsu","sequence":"first","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masato","family":"Yoshimitsu","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoko","family":"Kitagawa","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoshi","family":"Takatori","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Naoki","family":"Fukui","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masakazu","family":"Osakada","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoko","family":"Yamaguchi","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keiji","family":"Kajimura","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hirotaka","family":"Obana","sequence":"additional","affiliation":[{"name":"Department of Food, Drugs and Environment Osaka Prefectural Institute of Public Health  Higashinari\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takaho","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Food and Drug Safety Center Hatano Research Institute  Hadano Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,3,2]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9673(93)85007-T"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2007.01.018"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2013.09.005"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(03)00539-9"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1007669411738"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemosphere.2014.05.075"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.talanta.2013.11.087"},{"key":"e_1_2_7_9_1","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1093\/jaoac\/92.2.561","article-title":"Multiresidue analysis of 102 organophosphorus pesticides in produce at parts\u2010per\u2010billion levels using a modified QuEChERS method and gas chromatography with pulsed flame photometric detection","volume":"92","author":"Schenck F.","year":"2009","journal-title":"J. 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