{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T17:01:56Z","timestamp":1732035716093},"reference-count":24,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2015,8,19]],"date-time":"2015-08-19T00:00:00Z","timestamp":1439942400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"A novel rapid methodology for determining the chemical oxygen demand (COD) based on a thermal sensor with a flow injection analysis system was proposed and experimentally validated. The ability of this sensor to detect and monitor COD was based on the degree of enthalpy increase when sodium hypochlorite reacted with the organic content in water samples. The measurement results were correlated with COD and were compared against the conventional method using potassium dichromate. The assay required only 5\u20137 min rather than the 2 h required for evaluation by potassium dichromate. The linear range was 5\u20131000 mg\/L COD, and the limit of detection was very low, 0.74 mg\/L COD. Moreover, this method exhibited high tolerance to chloride ions; 0.015 mol\/L chloride ions had no influence on the response. Finally, the sensor was used to detect the COD of different water samples; the results were verified by the standard dichromate method.<\/jats:p>","DOI":"10.3390\/s150820501","type":"journal-article","created":{"date-parts":[[2015,8,19]],"date-time":"2015-08-19T14:51:50Z","timestamp":1439995910000},"page":"20501-20510","source":"Crossref","is-referenced-by-count":23,"title":["A Novel Thermal Sensor for the Sensitive Measurement of Chemical Oxygen Demand"],"prefix":"10.3390","volume":"15","author":[{"given":"Na","family":"Yao","sequence":"first","affiliation":[{"name":"Institute of Environmental Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China"},{"name":"Jingzhou Central Hospital, Jingzhou 434026, China"}]},{"given":"Zhuan","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Environmental Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China"},{"name":"Yancheng Blood Center, Yancheng 224005, China"}]},{"given":"Ying","family":"Chen","sequence":"additional","affiliation":[{"name":"Hubei Center for Disease Control and Prevention, Wuhan 430079, China"}]},{"given":"Yikai","family":"Zhou","sequence":"additional","affiliation":[{"name":"Institute of Environmental Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China"}]},{"given":"Bin","family":"Xie","sequence":"additional","affiliation":[{"name":"Pure and Applied Biochemistry, Lund University, Box 124, Lund SE-22100, Sweden"}]}],"member":"1968","published-online":{"date-parts":[[2015,8,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1172","DOI":"10.1002\/(SICI)1521-4109(199911)11:16<1172::AID-ELAN1172>3.0.CO;2-J","article-title":"Chemical oxygen demand (cod) sensor using a stopped-flow thin layer electrochemical cell","volume":"11","author":"Lee","year":"1999","journal-title":"Electroanalysis"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1021\/ac0302298","article-title":"Development of a direct photoelectrochemical method for determination of chemical oxygen demand","volume":"76","author":"Zhao","year":"2004","journal-title":"Anal. 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