TY - JOUR
T1 - Comparative performance of 14-crown-4 derivatives as lithium-selective electrodes
AU - Kataky, Ritu
AU - Nicholson, Patrick E.
AU - Parker, David
AU - Covington, Arthur K.
PY - 1991/2
Y1 - 1991/2
N2 - A series of neutral ionophore-based lithium-selective liquid-membrane electrodes have been prepared and the electrode performance compared with similar electrodes based on the lithium ionophores ETH 1810-ortho-nitrophenyl octyl ether (oNPOE) and ETH 2137-bis(1-butylpentyl) adipate (BBPA). By using a diamide substituted 14-crown-4 macrocycle, selectivities for Li+ in the presence of Na+ of log kpotLi,Na = -3.25 and -2.92 were obtained for diisobutylamide-oNPOE and di-n-butylamide-oNPOE derivatives. The di-n-butylamide-oNPOE based electrode functioned satisfactorily in serum, exhibiting a fast response time (10-15 s), an acceptable lifetime of 50 d and minimal protein interference.
AB - A series of neutral ionophore-based lithium-selective liquid-membrane electrodes have been prepared and the electrode performance compared with similar electrodes based on the lithium ionophores ETH 1810-ortho-nitrophenyl octyl ether (oNPOE) and ETH 2137-bis(1-butylpentyl) adipate (BBPA). By using a diamide substituted 14-crown-4 macrocycle, selectivities for Li+ in the presence of Na+ of log kpotLi,Na = -3.25 and -2.92 were obtained for diisobutylamide-oNPOE and di-n-butylamide-oNPOE derivatives. The di-n-butylamide-oNPOE based electrode functioned satisfactorily in serum, exhibiting a fast response time (10-15 s), an acceptable lifetime of 50 d and minimal protein interference.
UR - http://www.scopus.com/inward/record.url?scp=0025964523&partnerID=8YFLogxK
U2 - 10.1039/AN9911600135
DO - 10.1039/AN9911600135
M3 - Journal article
C2 - 1905884
AN - SCOPUS:0025964523
SN - 0003-2654
VL - 116
SP - 135
EP - 140
JO - The Analyst
JF - The Analyst
IS - 2
ER -
