OVEL METHODS for routine deterniiiiatiou of calcium in serum have widely replaced cumbersome “classic” methods. Further evaluation of the applicatioii of such methods to urine is needed. In our laboratory, urinary calcium has been measured by the accurate, but tedious, ClarkCollip procedure of precipitating calcium as the oxalate and titrating the oxalate with standardized peimangaiiate. Over t...

Dinuclear pentacoordinate nickel(ii) complexes of the formula [(NiTp*)2(μ-L)] (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate; L = oxalate (); oxamate (); oxamidate (); OC(4-Cl-C6H4N)C(4-Cl-C6H4N)O ()) and {[Ni(N3-mc)]2(μ-L)}(PF6)2 (N3-mc = 2,4,4-trimethyl-1,5,9-triazacyclododec-1-ene; L = oxalate (); oxamate ()) have been synthesized and spectroscopically characterized (IR, (1)H NMR). X-ray stru...

Abstract Invited for this month's cover is the group of Jaeyoung Lee at Gwangju Institute Science and Technology. The shows how cobalt oxalates faced on conductive carbon can act as an electrocatalyst to facilitate redox reaction lithium polysulfide cathode interface in lithium–sulfur batteries. facilitated electrochemical polysulfides was proved by a series catenation reactions formed interfac...

The mineralization of 1.0 to 100 ng each of four complexing compounds-oxalate, citrate, nitrilotriacetate (NTA), and EDTA-per ml was tested in media prepared in accordance with equilibrium calculations by a computer program so that the H, Ca, Mg, Fe, or Al complex (chemical species) was predominant. Sewage microorganisms mineralized calcium citrate more rapidly than iron, aluminum, or hydrogen ...

Mixed actinide(III,IV) oxalates of the general formula M2.2UAn(C2O4)5·nH2O (An = Pu or Am and M = H3O(+) and N2H5(+)) have been quantitatively precipitated by oxalic precipitation in nitric acid medium (yield >99%). Thorough multiscale structural characterization using XRD and XAS measurements confirmed the existence of mixed actinide oxalate solid solutions. The XANES analysis confirmed that t...