Two-barrel bile-acids-sensitive microelectrodes based on liquid ion exchanger.
Several liquid membrane microelectrodes sensitive to bile acids (two barrel, tip diameter about 0.5 micron) are described. The results of different liquid ion exchangers such as Aliquat 336/decanol, trioctylmethylammonium/decanol, hexadecyltrimethylammonium/decanol, benzyldimethylhexadecylammonium/decanol, hexadecyltributylammonium/5% hexachlorobenzene + 0.5% bromoacetanilide in o-dichlorobenzene are compared with each other, and the better one among them is the mixture of benzyldimethylhexadecylammonium cholate/decanol with hexadecyltributylammonium taurocholate/5% hexachlorobenzene + 0.5% bromoacetanilide in o-dichlorobenzene because of its quicker response time and low drift. The calibration curves, slopes, test limits, selective coefficients, drifts, and response times of the various bile-acids-sensitive microelectrodes in different calibration solutions were demonstrated and compared with each other.
Department of Scientific Instruments, Zhejiang University, China.
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D001647:Bile Acids and Salts / Q000032:analysis*; D002138:Calibration; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D020355:Cholates; D019826:Cholic Acid; D002793:Cholic Acids / Q000032:analysis; D007474:Ion Exchange; D007477:Ions; D008839:Microelectrodes; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D012996:Solutions
D001647:Bile Acids and Salts; D020355:Cholates; D002793:Cholic Acids; D007477:Ions; D000644:Quaternary Ammonium Compounds; D012996:Solutions; C064934:trioctylmethylammonium cholate; C064933:benzyldimethylhexadecylammonium cholate; D019826:Cholic Acid