Design of Lab VIEW~R-based software for the control fo sequential injection analysis instrumentation for the determination of morphine

摘要

Lab VIEW~R-based software for the automation of a sequential injection analysis instrument for the detemrination of morphine is presented. Detection was based on its chemiluminescence reaction with acidic potassium permanganate in the presence of sodium polyphosphate. The calibration function approximated linearity (range 5X10~(-10) to 5X10~(-6) M) with a line of best fit of y=1.05x+8.9164 (R~2=0.9959), wheere y is the log_10 signal (mV) and x is the log_10 morphine concentration (M). Precision, as measured by relative standard deviation, was 0.7% for five replicate analyses of morphine standard (5X10~-8) M). The limit of detection (3sigma) was determined as 5 X 10~(-11) M morphine.