Absorption signals for thallium (solid line) and background (dotted line) for marine sediment reference materials using reduced palladium as a chemical modifier and line source electrothermal atomic absorption spectrometry (ET AAS) with deuterium lamp background correction. a MESS-2 certified reference material (CRM); b HISS-1 CRM; 700 °C pyrolysis and 2,200 °C atomization temperature. (From [45])