Abstract
A nitrate ion-selective electrode (NO 3 - - ISE) has been developed based on tetradodecylammonium bromide as an anion exchanger and 2-nitrophenyl octyl ether as a plasticizer. The NO 3 - - ISE shows an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -6 and 1.0 × 10 -1 M, with an anionic slope of -57.7 ± 0.7 mV/decade. The selectivity coefficients of the NO 3 - - ISE for nitrate ion against chloride and sulfate were obtained. A microfluidic polymer chip was fabricated using polystyrene plates and stainless-steel wires as a template for the channel. The microfluidic polymer chip is composed of a mixing chip and a NO 3 - - ISE detector chip. The microfluidic polymer chip, integrated with a NO 3 - - ISE detector consisting of the NO 3 - - ISE and a Na + -ISE as a reference electrode, showed an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -5 and 1.0 × 10 -1 M, with an anionic slope of -54.3 ± 1.3 mV/decade. The microfluidic polymer chip was then applied to the determination of nitrate ion in environmental water samples, such as a tap water, a well-water sample and water for agricultural use. 2010
| Original language | English |
|---|---|
| Pages (from-to) | 417-423 |
| Number of pages | 7 |
| Journal | analytical sciences |
| Volume | 26 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jan 1 2010 |
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All Science Journal Classification (ASJC) codes
- Analytical Chemistry
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Microfluidic polymer chip with an embedded ion-selective electrode detector for nitrate-ion assay in environmental samples. / Masadome, Takashi; Nakamura, Kazuki; Iijima, Daisuke; Horiuchi, Osamu; Tossanaitada, Benjaporn; Wakida, Shin ichi; Imato, Toshihiko.
In: analytical sciences, Vol. 26, No. 4, 01.01.2010, p. 417-423.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microfluidic polymer chip with an embedded ion-selective electrode detector for nitrate-ion assay in environmental samples
AU - Masadome, Takashi
AU - Nakamura, Kazuki
AU - Iijima, Daisuke
AU - Horiuchi, Osamu
AU - Tossanaitada, Benjaporn
AU - Wakida, Shin ichi
AU - Imato, Toshihiko
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A nitrate ion-selective electrode (NO 3 - - ISE) has been developed based on tetradodecylammonium bromide as an anion exchanger and 2-nitrophenyl octyl ether as a plasticizer. The NO 3 - - ISE shows an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -6 and 1.0 × 10 -1 M, with an anionic slope of -57.7 ± 0.7 mV/decade. The selectivity coefficients of the NO 3 - - ISE for nitrate ion against chloride and sulfate were obtained. A microfluidic polymer chip was fabricated using polystyrene plates and stainless-steel wires as a template for the channel. The microfluidic polymer chip is composed of a mixing chip and a NO 3 - - ISE detector chip. The microfluidic polymer chip, integrated with a NO 3 - - ISE detector consisting of the NO 3 - - ISE and a Na + -ISE as a reference electrode, showed an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -5 and 1.0 × 10 -1 M, with an anionic slope of -54.3 ± 1.3 mV/decade. The microfluidic polymer chip was then applied to the determination of nitrate ion in environmental water samples, such as a tap water, a well-water sample and water for agricultural use. 2010
AB - A nitrate ion-selective electrode (NO 3 - - ISE) has been developed based on tetradodecylammonium bromide as an anion exchanger and 2-nitrophenyl octyl ether as a plasticizer. The NO 3 - - ISE shows an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -6 and 1.0 × 10 -1 M, with an anionic slope of -57.7 ± 0.7 mV/decade. The selectivity coefficients of the NO 3 - - ISE for nitrate ion against chloride and sulfate were obtained. A microfluidic polymer chip was fabricated using polystyrene plates and stainless-steel wires as a template for the channel. The microfluidic polymer chip is composed of a mixing chip and a NO 3 - - ISE detector chip. The microfluidic polymer chip, integrated with a NO 3 - - ISE detector consisting of the NO 3 - - ISE and a Na + -ISE as a reference electrode, showed an almost Nernstian response to nitrate ion over a concentration range between 1.0 × 10 -5 and 1.0 × 10 -1 M, with an anionic slope of -54.3 ± 1.3 mV/decade. The microfluidic polymer chip was then applied to the determination of nitrate ion in environmental water samples, such as a tap water, a well-water sample and water for agricultural use. 2010
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U2 - 10.2116/analsci.26.417
DO - 10.2116/analsci.26.417
M3 - Article
VL - 26
SP - 417
EP - 423
JO - Analytical Sciences
JF - Analytical Sciences
SN - 0910-6340
IS - 4
ER -