DETECTION OF HEAVY-METAL IONS BY ISFETS IN A FLOW-INJECTION ANALYSIS CELL

被引：10
作者：
COBBEN, PLHM
EGBERINK, RJM
BOMER, J
HAAK, JR
BERGVELD, P
REINHOUDT, DN
机构：
[1] UNIV TWENTE,ORGAN CHEM LAB,POB 217,7500 AE ENSCHEDE,NETHERLANDS
[2] UNIV TWENTE,BIOINFORMAT LAB,7500 AE ENSCHEDE,NETHERLANDS
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 1992年 / 6卷 / 1-3期
关键词：
D O I：
10.1016/0925-4005(92)80075-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An ion-selective field-effect transistor (ISFET) is chemically modified with a photopolymerizable and cyanopropyl modified polysiloxane containing N,N,N',N'-tetrabutyl-3,6-dioxaoctane-dithioamide as Cd2+ ionophore. This CHEMFET has a Nernstian response (30 mV/decade) to a change of cadmium activity in aqueous solutions. Selectivity coefficients of the CHEMFET towards potassium, calcium, copper, and lead are given. Preliminary results of the CHEMFET in a flow injection analysis cell without wire bonding and polymeric encapsulation are presented.
引用
收藏
页码：304 / 307
页数：4
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