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Disposable Screen‐Printed Edge Band Ultramicroelectrodes for the Determination of Trace Amounts of Nitrite Ion
Author(s) -
Chang JenLin,
Zen JyhMyng
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200503471
Subject(s) - ultramicroelectrode , nitrite , detection limit , analytical chemistry (journal) , voltammetry , chemistry , linear range , trace amounts , electrode , cyclic voltammetry , electrochemistry , environmental chemistry , chromatography , nitrate , medicine , alternative medicine , organic chemistry , pathology
The application of linear scan voltammetry for sensitive determination of nitrite by using a disposable screen‐printed edge band carbon ultramicroelectrode (designated as SPUME) was reported in this study. The measurement with the SPUME can be performed in solutions of low ionic strength, e.g., natural waters, because the ohmic loses are negligible. The limiting oxidation current of nitrite showed a wide linear range up to 3 mM at the SPUME. A relative standard deviation of 2.46% ( n =5) for analyzing 5 μM nitrite indicated a detection limit ( S/N =3) of 0.38 μM. Real sample analysis of mineral and ground water samples as well as bratwurst food product showed satisfactory results. Since the SPUME is low cost and easy for mass production, the disposable nature further offers to application in diverse field of electroanalytical chemistry.