{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T15:31:56Z","timestamp":1761060716947,"version":"build-2065373602"},"reference-count":20,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,12,15]],"date-time":"2018-12-15T00:00:00Z","timestamp":1544832000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Excellent Dissertation Cultivation Funds of Wuhan University of Technology","award":["2017-YS-083"],"award-info":[{"award-number":["2017-YS-083"]}]},{"name":"the Fundamental Research Funds for the Central Universities","award":["WUT:2018-IB-024"],"award-info":[{"award-number":["WUT:2018-IB-024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>For monitoring of trace amounts of hydrofluoric acid in the organic fluorine chemical industry, a facile method for determination of the hydrofluoric acid in an ethanol solution of lithium chloride, by coulometric titration, was proposed. Relying on homemade acid\u2013base coulometric autotitrator, the electrolyte was 0.50 mol\u00b7L\u22121 LiCl ethanol solution and the constant current intensity was 0.2\u20132 mA. As for the working electrode pair, a platinum plate was used as a working electrode, and a platinum wire was used as an auxiliary electrode. The indicating electrode was the pH composite glass electrode and the titration endpoint was pH 5.50. The results showed that the relative standard deviation was below 2.0%, as the content of the hydrofluoric acid was between 2 \u03bcg to 100 \u03bcg. The recovery rate was 99.0\u2013102.0%. This proposed route has the advantages of simplicity, convenience, quickness, accuracy, and automation, which can be applied to the accurate determination of trace amounts of hydrofluoric acid, in non-aqueous solutions.<\/jats:p>","DOI":"10.3390\/s18124439","type":"journal-article","created":{"date-parts":[[2018,12,18]],"date-time":"2018-12-18T02:15:59Z","timestamp":1545099359000},"page":"4439","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Determination of Trace Amounts of Hydrofluoric Acid in Non-Aqueous Solutions by the Coulometric Titration Method"],"prefix":"10.3390","volume":"18","author":[{"given":"Cairui","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China"}]},{"given":"Congcong","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China"}]},{"given":"Ling","family":"Jin","sequence":"additional","affiliation":[{"name":"Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China"}]},{"given":"Hongwei","family":"Cai","sequence":"additional","affiliation":[{"name":"Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China"}]}],"member":"1968","published-online":{"date-parts":[[2018,12,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Kirsch, P. 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