Analytical Chemistry

(Chris Devlin) #1
Figure 13.5
(a) Schematic diagram of a microprocessor-controlled liquid chromatograph.
(b) In-line microprocessor-controlled atomic absorption spectrophotometer
(address and control buses omitted for simplicity).

cated as microcomputers become more versatile and memory size and speed increases.


(1)—
A Microprocessor-controlled Potentiometric Titrator


A typical instrument (Figure 13.6) will have a certain amount of memory for the storage of methods and
data, and will offer a choice of several modes of titration, e.g.



  • incremental (pre-selected increments and time intervals)

  • equilibrium (pre-selected increments at variable time intervals)

  • end-point (pre determined end point in mV or pX)

  • recording (continuous, curve drawn on chart recorder).

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