Solid-contact Potentiometric Sensor for the Determination of Total Ammonia Nitrogen in Seawater
Ding, Lan1,2; Ding, Jiawang2; Ding, Baojun1; Qin, Wei2
2017-04-01
发表期刊INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
卷号12期号:4页码:3296-3308
摘要A solid-contact potentiometric sensor for in situ detection of total ammonia nitrogen (TAN, free ammonia plus the ammonium ion) in seawater is described. In the compact system, an all-solid-state polymeric membrane ammonium-seletive electrode is integrated with a polyvinyl alcohol hydrogel buffer film of pH 7.0 and a gas-permeable membrane. The gaseous NH3 in seawater diffuses through the gas-permeable membrane and is converted to NH4+ in the hydrogel buffer, which can be potentiometrically sensed by the solid-contact ammonium-sensitive membrane electrode. The electrode configuration facilitates the alteration of NH3 to NH4+ in the hydrogel buffer film and improves the sensitivity for the detection of TAN by the buffer trap effect. The gas-permeable membrane effectively eliminates the ion interferences from the seawater sample matrixes. The proposed sensor shows a stable potentiometric response in the concentration range of 10(-6) - 10(-4) M with a detection limit of 6.4 x 10(-7) M, and has been successfully applied to the detection of TAN in seawater.
关键词Ammonia Hydrogel Gas Permeable Membrane Solid-contact Ion-selective Electrode Seawater
DOI10.20964/2017.04.01
项目资助者National Natural Science Foundation of China(21107008 ; Taishan Scholar Program of Shandong Province ; Chinese Academy of Sciences(XDA11020702) ; 21475148 ; 21575158)
收录类别SCI
关键词[WOS]ION-SELECTIVE ELECTRODES ; POLYMERIC MEMBRANE ELECTRODES ; FLUORESCENCE DETECTION ; SPECTROPHOTOMETRIC DETECTION ; DETECTION LIMITS ; FLOW-INJECTION ; GAS SENSORS ; WATERS ; PH ; COEFFICIENTS
文章类型Article
语种英语
WOS研究方向Electrochemistry
WOS记录号WOS:000402199900057
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/22528
专题中科院海岸带环境过程与生态修复重点实验室
作者单位1.Dalian Univ Technol, Sch Chem, Dalian 116024, Liaoning, Peoples R China
2.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China
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GB/T 7714
Ding, Lan,Ding, Jiawang,Ding, Baojun,et al. Solid-contact Potentiometric Sensor for the Determination of Total Ammonia Nitrogen in Seawater[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2017,12(4):3296-3308.
APA Ding, Lan,Ding, Jiawang,Ding, Baojun,&Qin, Wei.(2017).Solid-contact Potentiometric Sensor for the Determination of Total Ammonia Nitrogen in Seawater.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,12(4),3296-3308.
MLA Ding, Lan,et al."Solid-contact Potentiometric Sensor for the Determination of Total Ammonia Nitrogen in Seawater".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 12.4(2017):3296-3308.
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