1. Method for determining background and correction of broadband background for spectrometers, comprising the steps of: (a) recording of a spectral graph with a spectrometer and smoothing of said recorded spectral graph (b) determining of all values in the initially recorded graph having a value higher than the value of the smoothed graph and reducing the values to the value of the smoothed graph; (c) repeating the steps (a) to (b) at least twice, (d) subtracting the background graph obtained, resulting in a background corrected graph from the initial graph and using the background corrected graph in the spectrometer.