TY - JOUR
T1 - Organic tin compounds combined with anionic additives - An ionophore system leading to a phosphate ion-selective electrode?
AU - Sasaki, S.
AU - Ozawa, S.
AU - Citterio, D.
AU - Yamada, K.
AU - Suzuki, K.
PY - 2004/5/10
Y1 - 2004/5/10
N2 - The potentiometric response characteristics of electrodes based on organic trialkyl/aryl-tin compounds combined with various amounts of anionic additive (NaTFPB) were investigated in 0.1M bis-Tris-H2SO4 buffer solution at pH 7.0. The best result for phosphate sensing was obtained for the electrode membrane containing tributyltin chloride and 25mol% NaTFPB, where the electrode exhibits high selectivity towards phosphate anions with a slope of -60mV per decade. It was demonstrated that the interference from more lipophilic anions is drastically suppressed (logKij pot, i=H 2PO4 -: salicylate, 0.5; SCN-, -0.8; ClO4 -, -2.3) under this optimized measurement conditions.
AB - The potentiometric response characteristics of electrodes based on organic trialkyl/aryl-tin compounds combined with various amounts of anionic additive (NaTFPB) were investigated in 0.1M bis-Tris-H2SO4 buffer solution at pH 7.0. The best result for phosphate sensing was obtained for the electrode membrane containing tributyltin chloride and 25mol% NaTFPB, where the electrode exhibits high selectivity towards phosphate anions with a slope of -60mV per decade. It was demonstrated that the interference from more lipophilic anions is drastically suppressed (logKij pot, i=H 2PO4 -: salicylate, 0.5; SCN-, -0.8; ClO4 -, -2.3) under this optimized measurement conditions.
KW - Ion-selective electrode
KW - Organic tin
KW - Phosphate
KW - Sensor
UR - http://www.scopus.com/inward/record.url?scp=1842633878&partnerID=8YFLogxK
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U2 - 10.1016/j.talanta.2003.12.034
DO - 10.1016/j.talanta.2003.12.034
M3 - Article
C2 - 18969410
AN - SCOPUS:1842633878
VL - 63
SP - 131
EP - 134
JO - Talanta
JF - Talanta
SN - 0039-9140
IS - 1
ER -