Online measurement apparatus for determination of toxic concentrations, in sewage, comprises laboratory robot for automatic preparation of samples, extraction and sample measurement from laboratory or flow system

摘要

The apparatus for online measurement of toxic concentrations in sewage has a laboratory robot for the automatic preparation of samples, extraction and sample measurement from the laboratory or a flow system. An extraction unit automatically increases the analyte concentration, and the extract is transferred automatically to a measurement cell. The apparatus for online measurement of toxic concentrations in sewage has a laboratory robot for the automatic preparation of samples, extraction and sample measurement from the laboratory or a flow system. An extraction unit automatically increases the analyte concentration, and the extract is transferred automatically to a measurement cell. The extract is measured automatically by a spectrometer. The actual spectrum is evaluated by a chemometric calibration model to give the sum total parameter of the toxic concentration. The chemometric results are converted electronically into a signal which can be transmitted e.g. to a process control. A calibration model measures the concentration of other substances which have a spectroscopic activity. The measurements can be in a liquid phase without extraction or a gas phase.