Comparing the elemental abundances of debris disc host stars (this work) with that of similar stars in the Sco-Cen association (see Table 5) as reference. The yellow and grey circles represent individual Sco-Cen association members. The stars represent the median abundance of the Sco-Cen association members. The x-axis is in increasing order of elemental condensation temperature. The condensation temperature also increases from the top to the bottom panel. The volatile abundances (C, N, O) show no depletion for all stars. The refractory abundances are depleted in HD 110058 and HD 32297, likely due to dust-poor material accretion from their early protoplanetary discs.