{"title":"流动注射分析系统测定肥料中硝酸盐选择电极的制备","authors":"Sumonmarn Chaneam , Waritta Taweetong , Kampanart Kaewyai , Pheeraphon Thienwong , Aekgaraj Takaew , Rasamee Chaisuksant","doi":"10.1016/j.proche.2016.07.011","DOIUrl":null,"url":null,"abstract":"<div><p>A nitrate ion selective electrode (nitrate-ISE) based on pyrrole modification on a common pencil lead was proposed. The lab-made nitrate-ISE was easily constructed by pyrrole polymerization with nitrate ion as the dopant using cyclic voltammetry. The fabricated nitrate-ISE was then coupled with flow injection analysis (FIA) for an automatic system. The flow potentiometry provided working range of 1x10<sup>-4</sup> to 4x10<sup>-3</sup> mol L<sup>-1</sup> of nitrate and allowed sample throughput up to 50 samples h<sup>-1</sup>. Linear regression analysis showed good agreement (<em>r</em><sup>2</sup>=0.9961) with Nernstian response. This system was applied to determine nitrate-nitrogen (nitrate-N) in fertilizer samples.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":"20 ","pages":"Pages 73-75"},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.07.011","citationCount":"5","resultStr":"{\"title\":\"Fabrication of a Nitrate Selective Electrode for Determination of Nitrate in Fertilizers by Using Flow Injection Analysis System\",\"authors\":\"Sumonmarn Chaneam , Waritta Taweetong , Kampanart Kaewyai , Pheeraphon Thienwong , Aekgaraj Takaew , Rasamee Chaisuksant\",\"doi\":\"10.1016/j.proche.2016.07.011\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A nitrate ion selective electrode (nitrate-ISE) based on pyrrole modification on a common pencil lead was proposed. The lab-made nitrate-ISE was easily constructed by pyrrole polymerization with nitrate ion as the dopant using cyclic voltammetry. The fabricated nitrate-ISE was then coupled with flow injection analysis (FIA) for an automatic system. The flow potentiometry provided working range of 1x10<sup>-4</sup> to 4x10<sup>-3</sup> mol L<sup>-1</sup> of nitrate and allowed sample throughput up to 50 samples h<sup>-1</sup>. Linear regression analysis showed good agreement (<em>r</em><sup>2</sup>=0.9961) with Nernstian response. This system was applied to determine nitrate-nitrogen (nitrate-N) in fertilizer samples.</p></div>\",\"PeriodicalId\":20431,\"journal\":{\"name\":\"Procedia Chemistry\",\"volume\":\"20 \",\"pages\":\"Pages 73-75\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.proche.2016.07.011\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Procedia Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1876619616300195\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1876619616300195","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Fabrication of a Nitrate Selective Electrode for Determination of Nitrate in Fertilizers by Using Flow Injection Analysis System
A nitrate ion selective electrode (nitrate-ISE) based on pyrrole modification on a common pencil lead was proposed. The lab-made nitrate-ISE was easily constructed by pyrrole polymerization with nitrate ion as the dopant using cyclic voltammetry. The fabricated nitrate-ISE was then coupled with flow injection analysis (FIA) for an automatic system. The flow potentiometry provided working range of 1x10-4 to 4x10-3 mol L-1 of nitrate and allowed sample throughput up to 50 samples h-1. Linear regression analysis showed good agreement (r2=0.9961) with Nernstian response. This system was applied to determine nitrate-nitrogen (nitrate-N) in fertilizer samples.
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