How ND LIT Tests Samples!
Taken from ThermoFisher Scientific
ND LIT uses a machine called an X-Ray Fluorescence (XRF) analyzer to find out how much lead is in each sample. An XRF works by shooting x-rays at a sample of interest. When an element in the sample gets hit by the energy from the x-ray it starts to get excited. Once the element receives a specific amount of energy it gives off an electron. In order to stay stable, the element moves an electron which gives off energy. Each element will give off a specific amount of energy when it moves the electron. Since we know the amount of energy for different elements, we are then able to identify what elements exist in the sample and how much of each element exists in each sample!