Abstract
An electrode based on a poly(vinyl chloride) membrane plasticized with o-nitrophenyl octyl ether, which contains no ion-exchange site, was used as an indicator electrode in FIA of nonionic surfactants. The flow injection manifold was composed of a two-channel system. The sample solution (100 μl) was injected into a sample carrier stream (water), and merged with a stream of baseline potential supporting electrolyte solution (BLSS). The carrier and BLSS were pumped at a flow rate of 1.1 ml/min. The electrode responds to cationic complexes formed between metal ion in BLSS and nonionic surfactants in sample. The electrode detector showed the cationic response with a slope of 25 mV per decade for Triton X-100 from 10-4 M to 10-3 M, when the mixture of 0.1 M BaCl2 or 0.1 M CaCl2 and 10-5 M sodium dodecyl sulfate (NaDS) was used as BLSS. However, the electrode detector showed the cationic potential response with a slope of 45 mV per decade for Triton X-100 from 10-3 M to 10-1 M, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The response of the detector to other several nonionic surfactants such as poly (ethylene glycol) mono-p-nonylphenyl ether (n = 15, 18) and poly (ethylene glycol) dodecyl ether (n = 7, 25) was similar to that for Triton X-100, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The detection limit for Triton X-100 became lower with increase of the concentration of NaDS in BLSS. Coexistence of common inorganic electrolytes less than 10-2 M essentially gave no disturbance on the determination of nonionic surfactants. The ionic surfactants, however, gave serious interferences.
| Original language | English |
|---|---|
| Pages (from-to) | 519-522 |
| Number of pages | 4 |
| Journal | Bunseki Kagaku |
| Volume | 39 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1990 |
| Externally published | Yes |
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Keywords
- determination of nonionic surfactant
- FIA
- o-nitrophenyl octyl ether-plasticized PVC membrane electrode
- potentiometry
ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Flow injection analysis of nonionic surfactants with plasticized poly(vinyl chloride) membrane electrode detector. / Masadome, Takashi; Ishibashi, Nobuhiko.
In: Bunseki Kagaku, Vol. 39, No. 9, 1990, p. 519-522.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flow injection analysis of nonionic surfactants with plasticized poly(vinyl chloride) membrane electrode detector
AU - Masadome, Takashi
AU - Ishibashi, Nobuhiko
PY - 1990
Y1 - 1990
N2 - An electrode based on a poly(vinyl chloride) membrane plasticized with o-nitrophenyl octyl ether, which contains no ion-exchange site, was used as an indicator electrode in FIA of nonionic surfactants. The flow injection manifold was composed of a two-channel system. The sample solution (100 μl) was injected into a sample carrier stream (water), and merged with a stream of baseline potential supporting electrolyte solution (BLSS). The carrier and BLSS were pumped at a flow rate of 1.1 ml/min. The electrode responds to cationic complexes formed between metal ion in BLSS and nonionic surfactants in sample. The electrode detector showed the cationic response with a slope of 25 mV per decade for Triton X-100 from 10-4 M to 10-3 M, when the mixture of 0.1 M BaCl2 or 0.1 M CaCl2 and 10-5 M sodium dodecyl sulfate (NaDS) was used as BLSS. However, the electrode detector showed the cationic potential response with a slope of 45 mV per decade for Triton X-100 from 10-3 M to 10-1 M, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The response of the detector to other several nonionic surfactants such as poly (ethylene glycol) mono-p-nonylphenyl ether (n = 15, 18) and poly (ethylene glycol) dodecyl ether (n = 7, 25) was similar to that for Triton X-100, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The detection limit for Triton X-100 became lower with increase of the concentration of NaDS in BLSS. Coexistence of common inorganic electrolytes less than 10-2 M essentially gave no disturbance on the determination of nonionic surfactants. The ionic surfactants, however, gave serious interferences.
AB - An electrode based on a poly(vinyl chloride) membrane plasticized with o-nitrophenyl octyl ether, which contains no ion-exchange site, was used as an indicator electrode in FIA of nonionic surfactants. The flow injection manifold was composed of a two-channel system. The sample solution (100 μl) was injected into a sample carrier stream (water), and merged with a stream of baseline potential supporting electrolyte solution (BLSS). The carrier and BLSS were pumped at a flow rate of 1.1 ml/min. The electrode responds to cationic complexes formed between metal ion in BLSS and nonionic surfactants in sample. The electrode detector showed the cationic response with a slope of 25 mV per decade for Triton X-100 from 10-4 M to 10-3 M, when the mixture of 0.1 M BaCl2 or 0.1 M CaCl2 and 10-5 M sodium dodecyl sulfate (NaDS) was used as BLSS. However, the electrode detector showed the cationic potential response with a slope of 45 mV per decade for Triton X-100 from 10-3 M to 10-1 M, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The response of the detector to other several nonionic surfactants such as poly (ethylene glycol) mono-p-nonylphenyl ether (n = 15, 18) and poly (ethylene glycol) dodecyl ether (n = 7, 25) was similar to that for Triton X-100, when the mixture of 0.1 M NaCl and 10-5 M NaDS was used as BLSS. The detection limit for Triton X-100 became lower with increase of the concentration of NaDS in BLSS. Coexistence of common inorganic electrolytes less than 10-2 M essentially gave no disturbance on the determination of nonionic surfactants. The ionic surfactants, however, gave serious interferences.
KW - determination of nonionic surfactant
KW - FIA
KW - o-nitrophenyl octyl ether-plasticized PVC membrane electrode
KW - potentiometry
UR - http://www.scopus.com/inward/record.url?scp=84996000613&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84996000613&partnerID=8YFLogxK
U2 - 10.2116/bunsekikagaku.39.9_519
DO - 10.2116/bunsekikagaku.39.9_519
M3 - Article
AN - SCOPUS:84996000613
VL - 39
SP - 519
EP - 522
JO - Bunseki Kagaku
JF - Bunseki Kagaku
SN - 0525-1931
IS - 9
ER -