LEAD-SELECTIVE BULK OPTODES BASED ON NEUTRAL IONOPHORES WITH SUBNANOMOLAR DETECTION LIMITS

被引：208
作者：
LERCHI, M [1 ]
BAKKER, E [1 ]
RUSTERHOLZ, B [1 ]
SIMON, W [1 ]
机构：
[1] SWISS FED INST TECHNOL,DEPT ORGAN CHEM,UNIV STR 16,CH-8092 ZURICH,SWITZERLAND
来源：
ANALYTICAL CHEMISTRY | 1992年 / 64卷 / 14期
关键词：
D O I：
10.1021/ac00038a007
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An optical sensor (optode) based on a plasticized poly(vinyl chloride) (PVC) bulk membrane incorporating a metal ion-selective ionophore, a proton-selective chromoionophore, and lipophilic anionic sites for the measurement of lead is presented. Different ionophores and chromoionophores were used to design a new optode for environmental sensing properties. The present optode system shows an especially excellent selectivity over alkali and alkaline-earth metals. The measuring range for lead was found to be 5.0 X 10(-9) to 5.0 X 10(-3) M at pH 5.68 with a corresponding detection limit of 3.2 X 10(-12) M. This reversibly working optode shows different dynamic ranges depending on the basicity of the chromoionophore and on the pH of the sample solution. Therefore, these sensors can be tailored to a specific application by varying the above mentioned parameters. Dynamic range, detection limit, response behavior, short-time repeatability, stability, and selectivity of the optode systems are discussed. Comparison with polarography shows good agreement.
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页码：1534 / 1540
页数：7
相关论文
共 34 条
[1]  
[Anonymous], 1984, GUIDELINES DRINKING, V1
[2]  
BAKKER E, UNPUB ANAL CHEM
[3]   LIFETIME OF NEUTRAL-CARRIER-BASED LIQUID MEMBRANES IN AQUEOUS SAMPLES AND BLOOD AND THE LIPOPHILICITY OF MEMBRANE-COMPONENTS [J].
DINTEN, O ;
SPICHIGER, UE ;
CHANIOTAKIS, N ;
GEHRIG, P ;
RUSTERHOLZ, B ;
MORF, WE ;
SIMON, W .
ANALYTICAL CHEMISTRY, 1991, 63 (06) :596-603
[4]   SELECTIVITY-MODIFYING INFLUENCE OF ANIONIC SITES IN NEUTRAL-CARRIER-BASED MEMBRANE ELECTRODES [J].
EUGSTER, R ;
GEHRIG, PM ;
MORF, WE ;
SPICHIGER, UE ;
SIMON, W .
ANALYTICAL CHEMISTRY, 1991, 63 (20) :2285-2289
[5]   STUDIES ON LEAD ION-SELECTIVE ELECTRODES BASED ON POLYALKOXYLATES [J].
JABER, AMY ;
MOODY, GJ ;
THOMAS, JDR .
ANALYST, 1988, 113 (09) :1409-1413
[6]   LEAD-SELECTIVE MEMBRANE-ELECTRODE USING METHYLENE BIS(DIISOBUTYLDITHIOCARBAMATE) NEUTRAL CARRIER [J].
KAMATA, S ;
ONOYAMA, K .
ANALYTICAL CHEMISTRY, 1991, 63 (13) :1295-1298
[7]   LEAD-SELECTIVE NEUTRAL CARRIER BASED LIQUID MEMBRANE-ELECTRODE [J].
LINDNER, E ;
TOTH, K ;
PUNGOR, E ;
BEHM, F ;
OGGENFUSS, P ;
WELTI, DH ;
AMMANN, D ;
MORF, WE ;
PRETSCH, E ;
SIMON, W .
ANALYTICAL CHEMISTRY, 1984, 56 (07) :1127-1131
[8]   LEAD-SELECTIVE MEMBRANE ELECTRODES BASED ON NEUTRAL CARRIERS .1. ACYCLIC AMIDES AND OXAMIDES [J].
MALINOWSKA, E .
ANALYST, 1990, 115 (08) :1085-1087
[9]   2-PARAMETER DEBYE-HUCKEL APPROXIMATION FOR THE EVALUATION OF MEAN ACTIVITY-COEFFICIENTS OF 109 ELECTROLYTES [J].
MEIER, PC .
ANALYTICA CHIMICA ACTA, 1982, 136 (APR) :363-368
[10]  
Morf W.E., 1989, ION SELECTIVE ELECTR, V5, P141, DOI DOI 10.1016/B978-0-08-037933-3.50013-2
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