{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T22:15:15Z","timestamp":1759616115132},"reference-count":0,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2014,1,1]],"date-time":"2014-01-01T00:00:00Z","timestamp":1388534400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>A new and sensitive SPE method using modified carbon nanotubes for extraction and preconcentration, and electrothermal atomic absorption spectrometric determination of nickel (Ni) in real samples at ng\/L levels was investigated. First, multiwalled carbon nanotubes were oxidized with concentrated HNO3, then modified with 2-(5-bormo-2-pyridylazo)-5-diethylaminophenol reagent. The adsorption was achieved quantitatively on a modified carbon nanotubes column in a pH range of 6.5 to 8.5; the adsorbed Ni(II) ions were then desorbed by passing 5.0 mL of 1 M HNO3. The effects of analytical parameters, including pHof the solution, eluent type and volume, samplevolume, flow rate of the eluent, and matrix ions, were investigated for optimization of the presented procedure. The enrichment factor was 180, and the LOD for Ni was 4.9 ng\/L. The method was applied to the determination of Ni in water, food, and biological samples, and reproducible results wereobtained.<\/jats:p>","DOI":"10.5740\/jaoacint.12-327","type":"journal-article","created":{"date-parts":[[2014,2,3]],"date-time":"2014-02-03T23:40:56Z","timestamp":1391470856000},"page":"225-231","source":"Crossref","is-referenced-by-count":17,"title":["Determination of Nickel in Water, Food, and Biological Samples by Electrothermal Atomic Absorption Spectrometry After Preconcentration on Modified Carbon Nanotubes"],"prefix":"10.1093","volume":"97","author":[{"given":"Mohammad Ali","family":"Taher","sequence":"first","affiliation":[{"name":"Shahid Bahonar University of Kerman, Department of Chemistry, PO Box 76175-133, Kerman, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lida","family":"Mazaheri","sequence":"additional","affiliation":[{"name":"Payame Noor University, Departmentof Chemistry, PO Box 76175-559, Kerman, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hamid","family":"Ashkenani","sequence":"additional","affiliation":[{"name":"Islamic Azad University, Minab Branch, Department of Chemistry, Minab, Iran, and Shahid Bahonar University of Kerman, Young Researchers\u2019 Society, PO Box 76175-133, Kerman, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alireza","family":"Mohadesi","sequence":"additional","affiliation":[{"name":"Payame Noor University, Departmentof Chemistry, PO Box 76175-559, Kerman, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daryoush","family":"Afzali","sequence":"additional","affiliation":[{"name":"International Center for Science, High Technology & Environmental Sciences, Research Institute of Environmental Sciences, Environment Department, Kerman, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2019,11,27]]},"container-title":["Journal of AOAC INTERNATIONAL"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/academic.oup.com\/jaoac\/article-pdf\/97\/1\/225\/32425845\/jaoac0225.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/academic.oup.com\/jaoac\/article-pdf\/97\/1\/225\/32425845\/jaoac0225.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,7,17]],"date-time":"2020-07-17T14:07:32Z","timestamp":1594994852000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jaoac\/article\/97\/1\/225\/5654687"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,1,1]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2019,11,27]]},"published-print":{"date-parts":[[2014,1,1]]}},"URL":"https:\/\/doi.org\/10.5740\/jaoacint.12-327","relation":{},"ISSN":["1060-3271","1944-7922"],"issn-type":[{"value":"1060-3271","type":"print"},{"value":"1944-7922","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2014,1,1]]},"published":{"date-parts":[[2014,1,1]]}}}