The extraction of Gadolinium (Gd) from perchlorate and nitrate media in 1,2-dichloroethane(C2H4Cl2), carbon tetrachloride (CCl4) and chloroform (CHCl3) by mixtures of 2-thenoyltrifluoroacetone (HTTA) and a crown ether benzo-15-crown-5 (B15C5) is investigated.The composition of the extracted species is determined as Gd(TTA)3.nB15C5 (n=1 in nitratemedium and n=2 in perchlorate medium). The values...

The elemental composition of airborne particles is being increasingly monitored since several metals have been implicated in adverse human health outcomes and environmental deterioration while simultaneously providing clues to the identity and strength of their emission sources. However, quantification of several elements and transition metals in ambient aerosols, which are typically present on...

•Lanthanoids display ligand-field-like effects at room temperature•Anisotropic paramagnetic susceptibility parameters are reported for all lanthanoids•Site-specific isotope labels yield assignments of up to 1,400 ppm wide 1H-NMR spectra Lanthanoid tri-cations considered be chemically indistinguishable. A general dogma on the 4 f-electrons states that they shielded by outer electrons such do not...

Unfortunately criteria 1 and 2 do not always lead to an unambiguous assignment and in those few cases where they fail one must resort instead to criterion 3 to help resolve the impasse. Thus, based on criteria 1 and 2 alone, there are two possible conflicting choices for the two elements below Sc and Y in the first group of the d-block, either La and Ac or Lu and Lr. Both pairs have three valen...

s 2015 Symposium on Undergraduate Research & Creative Expression PRESENTATION SESSION I 1.A.1 A Malaria Type Effector in the Soybean Cyst Nematode Modulates the Plant Immune System Danielle Andrews Cyst nematodes (CNs) are sedentary endoparasitic round worms that infect the roots of economically important plants such as soybean, potato and sugar beet. CNs secrete proteins (effectors) into root ...