Trace elements in human cancerous and healthy tissues from the same individual: A comparative study by TXRF and EDXRF

Trace elements in human cancerous and healthy tissues: A comparative study by EDXRF, TXRF, synchrotron radiation and PIXE

“…A study using both EDXRF and TXRF by T. Magalhães et al [18] indicates an increase of most of the trace elements (mainly Fe, Cu and Zn) including Br in breast carcinoma (see Table 1). …”

“…Magalhães et al [18] studied colon tissues using EDXRF and TXRF and found that the levels of Ca, Zn and Sr were similar for both healthy and cancerous tissues; unlike P, K, Ni and Cu which show a tendency to increased in tumor tissue; Br and I were the only elements whose concentrations were decreased in the cancerous tissue (see Table 4). …”

“…A comparative study of energy dispersive X-ray fluorescence (EDXRF) and TXRF, in different types of human tissues (colon, breast and uterus), revealed the same tendency in accumulation of P, S, K, Ca, Fe and Cu in carcinogenic tissues and a reduction of Zn and Br [18].…”

Abstracts

“…Samples of sigmoid, rectum, kidney, lung, larynx, thyroid, and breast were studied. The obtained results showed a certain pattern of behavior for some elements, which was not the same for all tissues (Magalhães et al 2006). Bromine is always increased in diseased breast samples and Zn shows a tendency to decrease or to remain constant (Geraki et al 2002).…”

Investigation of historical documents for forensic purposes by x‐ray fluorescence spectrometry

“…The x-ray tube, the secondary target and the sample were in a triaxial geometry. [13] The characteristic radiation emitted by the elements present in the sample was detected by an Si(Li) detector, with a 30 mm 2 active area and 8 µm Be window. The energy resolution was 138 eV at 5.9 keV and the acquisition system was a Nucleus PCA card.…”