Hard to know what to make of this as it is not my field. But here is a claim for element 122, or maybe 124, detection in thorium by a mass spectrometric method. The authors have claimed previously the observation of very heavy isotopes, for instance Rg isotopes in the mass spectra of natural gold (http://arxiv.org/abs/nucl-ex/0702051).

Full reference

Brazil nuts have been promoted as a supplement to a healthy diet since the late 1970’s. This is due to their unusually high selenium content, an essential trace element known to be a powerful antioxidant and to reduce the likelihood of conditions such as heart disease and prostate cancer.

Recent research by Ryszard Lobinski and colleagues at the University of Pau and the Adour (France) has shown that the selenium compounds contained in Brazil nuts are seleno-peptides, and have developed a new method for their extraction, purification and characterisation. This has led to the discovery of 15 new seleno-peptides. Their research should help us to understand why Brazil nuts are so good at accumulating selenium.