{"title":"胶束介质中镧(III)与茜草嗪-氟络合物的混合配体分光光度法测定总氟","authors":"A. Chebotarev, A. Demchuk, K. Bevziuk, D. Snigur","doi":"10.23939/chcht14.01.001","DOIUrl":null,"url":null,"abstract":"A technique for direct spectrophotometric determination of total fluorine in products for oral hygiene using a mixed ligand complex La(III) and alizarincomplexone with fluoride ion in the presence of a non-ionic surfactant has been developed. A number of complexes of different stoichiometry formed in the system has been found. The La:alizarin-complexone:F = 1:2:1 complex was shown to be used as an analytical form. The complex in the presence of Tween 80 is characterized by the molar absorptivity ε620 = 11000 mol∙dm∙cm. The calibration curve is linear in the concentration range of fluoride ions 0.06–0.5 μg/ml. A simple, rapid, sensitive, and green procedure for the spectrophotometric determination of F using lanthanum alizarin-complexonate in the presence of Tween 80 was proposed and this technique was tested on samples of toothpastes and mouth rinses.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Mixed Ligand Complex of Lanthanum(III) and Alizarine-Complexone with Fluoride in Micellar Medium for Spectrophotometric Determination of Total Fluorine\",\"authors\":\"A. Chebotarev, A. Demchuk, K. Bevziuk, D. Snigur\",\"doi\":\"10.23939/chcht14.01.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A technique for direct spectrophotometric determination of total fluorine in products for oral hygiene using a mixed ligand complex La(III) and alizarincomplexone with fluoride ion in the presence of a non-ionic surfactant has been developed. A number of complexes of different stoichiometry formed in the system has been found. The La:alizarin-complexone:F = 1:2:1 complex was shown to be used as an analytical form. The complex in the presence of Tween 80 is characterized by the molar absorptivity ε620 = 11000 mol∙dm∙cm. The calibration curve is linear in the concentration range of fluoride ions 0.06–0.5 μg/ml. A simple, rapid, sensitive, and green procedure for the spectrophotometric determination of F using lanthanum alizarin-complexonate in the presence of Tween 80 was proposed and this technique was tested on samples of toothpastes and mouth rinses.\",\"PeriodicalId\":9762,\"journal\":{\"name\":\"Chemistry and Chemical Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-02-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemistry and Chemical Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.23939/chcht14.01.001\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry and Chemical Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23939/chcht14.01.001","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Mixed Ligand Complex of Lanthanum(III) and Alizarine-Complexone with Fluoride in Micellar Medium for Spectrophotometric Determination of Total Fluorine
A technique for direct spectrophotometric determination of total fluorine in products for oral hygiene using a mixed ligand complex La(III) and alizarincomplexone with fluoride ion in the presence of a non-ionic surfactant has been developed. A number of complexes of different stoichiometry formed in the system has been found. The La:alizarin-complexone:F = 1:2:1 complex was shown to be used as an analytical form. The complex in the presence of Tween 80 is characterized by the molar absorptivity ε620 = 11000 mol∙dm∙cm. The calibration curve is linear in the concentration range of fluoride ions 0.06–0.5 μg/ml. A simple, rapid, sensitive, and green procedure for the spectrophotometric determination of F using lanthanum alizarin-complexonate in the presence of Tween 80 was proposed and this technique was tested on samples of toothpastes and mouth rinses.
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