Determination of sulpha-drugs with a piezoelectric sensor.
A piezoelectric sensor is used for the determination of sulpha-drugs, as pure substances and in their dosage forms, by an indirect micro method based on reaction of the sulpha-drug with bromine and reduction of the resultant N-bromoderivative with iodide to form iodine, which after extraction is monitored with a piezoelectric quartz sensor. The response of the sensor is linear from 2 x 10(-5) to 4 x 10(-4)M sulpha-drug.
Nie
L H
LH
New Material Research Institute, Department of Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
Wang
T Q
TQ
Yao
S Z
SZ