Trapping of hydride

In a number of cases the efficiency of the trapping can be increased still further by a pretreatment of the graphite tubes. Indeed Zhang et al. [162, 163] and Sturgeon et al. [164] have shown that Pd can be used for the efficient trapping of hydrides and they explained the mechanism of preconcentration on the basis of the catalytic reactivity of Pd, which promotes the decomposition of hydrides at relatively low temperatures (200-300 °C). Normally Pd(NC>3)2 is used for this purpose. After trapping the elements they can subsequently be released by heating up the furnace. 

---