The application discloses an atomic absorption
spectrometer and a sample
analysis method, and belongs to the technical field of spectrometers.The application can realize on-line self-cleaning without stopping
machine by monitoring the
pollution degree of a
light transmission window in real time, accurately distinguishing real
pollution and environmental interference, adjusting the pulse blowing pressure of a cleaning
nozzle according to the
pollution deviation, and ensuring that the sensitivity does not decrease during long-term
continuous analysis; the application can dynamically match a three-stage progressive cleaning strategy by comprehensively considering the
current sample concentration, historical concentration fluctuation and
sample viscosity coefficient, so that the cleaning strength and
residual risk are accurately matched; the application can quantitatively evaluate the
residual risk value through blank test after cleaning, judge whether secondary cleaning is needed, monitor the temperature and
humidity of an atomization area in real time, and actively compensate the optical
signal to eliminate environmental disturbance; meanwhile, the application can on-line monitor the power of an
ultrasonic oscillation sheet, the air flow and air pressure, and the
system response delay, so that the accuracy, reproducibility and automatic operation and maintenance level of the atomic absorption
spectrometer in
continuous analysis of
complex matrix samples are improved.