AN EXTRAPOLATION METHOD FOR THE FAST EVALUATION OF THE FLUORIDE ION-SELECTIVE ELECTRODE EQUILIBRIUM POTENTIAL IN CONTINUOUS-FLOW ANALYSIS

被引：14

作者：

WANG, XD ^{[1
]}

SHEN, W ^{[1
]}

CATTRALL, RW ^{[1
]}

NYBERG, GL ^{[1
]}

LIESEGANG, J ^{[1
]}

机构：

[1] LA TROBE UNIV,FAC SCI & TECHNOL,SCH PHYS,BUNDOORA,VIC 3083,AUSTRALIA

来源：

ELECTROANALYSIS | 1995年 / 7卷 / 03期

关键词：

FLUORIDE DETERMINATION; FLOW ANALYSIS; STEADY STATE PREDICTION;

D O I：

10.1002/elan.1140070304

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The fluoride ion-selective electrode has been used in continuous flow analysis to determine the fluoride concentration in aqueous solution. The varying electrode potentials, E(t), were collected in the first 60s by an interfacing computer, and the equilibrium potential of the electrode was predicted using an extrapolation method. This value agrees to within +/-0.5 mV of the comparative value obtained by allowing sufficient time for the electrode to reach a steady state. Like flow-injection (FI), continuous flow (CF) analysis with this extrapolation method significantly shortens the time required for routine fluoride concentration measurements, but it also achieves a higher sensitivity than Fl. The method has been applied to the determination of fluoride in city tap water.

引用

页码：221 / 224

页数：4

共 17 条

[1]

BORZITSKY JA, 1992, ANAL CHIM ACTA, V258, P135

[2]

BUCK RP, 1976, ANAL CHEM, V48, pR23

[3] STUDY OF BEHAVIOR OF SOLID-STATE MEMBRANE ELECTRODES .3. MODEL FOR RESPONSE-TIME [J].

BUFFLE, J ;

PARTHASARATHY, N .

ANALYTICA CHIMICA ACTA, 1977, 93 (01) :111-120

[4] BUFFER SYSTEMS FOR USE WITH THE FLUORIDE ELECTRODE IN FLOW-INJECTION ANALYSIS [J].

CARDWELL, TJ ;

CATTRALL, RW ;

HAUSER, PC ;

HAMILTON, IC .

ANALYTICAL CHEMISTRY, 1987, 59 (01) :206-208

[5] STUDIES OF THE DETERMINATION OF FLUORIDE IN VEGETATION SAMPLES [J].

CATTRALL, RW ;

CHEK, WL ;

HAMILTON, IC ;

WATKINS, PJ .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1989, 42 (07) :1125-1131

[6]

DAVEY DE, 1986, ANAL LETT, V19, P1387

[7] THE FLUORIDE ION-SELECTIVE ELECTRODE IN FLOW-INJECTION ANALYSIS .1. GENERAL METHODOLOGY [J].

FRENZEL, W ;

BRATTER, P .

ANALYTICA CHIMICA ACTA, 1986, 185 :127-136

[8] DYNAMIC-RESPONSE OF FLUORIDE ION-SELECTIVE ELECTRODE [J].

HAWKINGS, RC ;

CORRIVEAU, LPV ;

KUSHNERIUK, SA ;

WONG, PY .

ANALYTICA CHIMICA ACTA, 1978, 102 (DEC) :61-83

[9] DEFINITION AND DETERMINATION OF RESPONSE-TIME OF ION-SELECTIVE ELECTRODES [J].

LINDNER, E ;

TOTH, K ;

PUNGOR, E .

PURE AND APPLIED CHEMISTRY, 1986, 58 (03) :469-479

[10] POTENTIOMETRIC DETECTION IN FLOW-INJECTION WITHOUT USE OF A CONVENTIONAL REFERENCE ELECTRODE [J].

LIU, RM ;

LIU, DJ ;

SUN, AL .

ANALYST, 1992, 117 (08) :1335-1337

← 1 2 →