“…The brevity of this explanation is deliberate as dissections of XRF have been undertaken on a number of occasions. [13][14][15][16] However, one aspect of the technique worth drawing attention to is that it only returns data from the first few micrometres of the object analysed 3,14,16 -if the surface of the object is not representative of the bulk composition, then it is possible that surface-level XRF results may well be erroneously applied to the object as a whole.…”