Soils overlying two porphyry Cu deposits (Spence, Gaby Sur) and the Pampa del Tamarugal, Atacama Desert, Northern Chile were collected in order to investigate the extent to which saline groundwaters influence ‘‘soil’’ chemistry in regions with thick Miocene and younger sediment cover. Soil carbonate (calcite) was analyzed for C and O isotopes and pedogenic gypsum for S isotopes. Soil calcite is...

Two in one: Be[B2(SO4)4] was obtained via a solvothermal reaction under harsh conditions either from elemental beryllium or sulfate. The anionic substructure of the borosulfate exhibits an elusive arrangement two different substructures. ino- and phyllosilicate analogue anions are charge compensated by cations. DFT calculations help to understand bonding situation.

The title compound, (C5H7N2)2[Cu(H2O)6](SO4)2·4H2O [systematic name: bis(2-aminopyridinium) hexaaquacopper(II) bis(sulfate) tetrahydrate], comprises axially elongated hexa-aqua-coordinated octa-hedral Cu(II) ions located on an inversion centre, non-coordinating sulfate anions, 2-amino-pyridinium cations and lattice water mol-ecules. The crystal structure is built of successive inorganic and org...

In the title hydrated double salt, 4,4'-(ethene-1,2-di-yl)dipyridin-1-ium hexa-aqua-iron(II) bis-(sulfate) monohydrate, (C12H12N2)[Fe(H2O)6](SO4)2·H2O, the Fe(II) cation is coordin-ated by six water mol-ecules in a slightly distorted octa-hedral geometry; the two pyridine rings of the 4,4'-(ethene-1,2-di-yl)dipyridin-1-ium cation are twisted to each other by a dihedral angle of 11.84 (10)°. In ...

The desulfurization of gas streams using aqueous iron(II)sulfate (Fe(II)SO4), zinc sulfate (ZnSO4) and copper sulfate (CuSO4) solutions as washing liquor is studied theoretically and experimentally. The desulfurization is accomplished by a precipitation reaction that occurs when sulfide ions and metal ions are brought into contact with each other. A thermodynamic study has been used to determin...

Two forms of dermatan sulfate proteoglycans, called DS-PGI and DS-PGII, have been isolated from both bovine fetal skin and calf articular cartilage and characterized. The proteoglycans were isolated using either (a) molecular sieve chromatography under conditions where DS-PGI selectively self-associates or (b) chromatography on octyl-Sepharose, which separates DS-PGI from DS-PGII based on diffe...

We compared concentrations of chloride and sulfate in sweat obtained by use of the Macroduct capillary-coil collection device with results obtained by the conventional absorbent filter pad technique. Samples obtained with the device weighed less than those obtained conventionally, but sweat chloride concentrations were not significantly different. To assess analysis of trace anions, we used ino...

Sulfate complexation of lanthanides is of great interest for predicting speciation of radionuclides in natural environments. The formation of LaSO4+(aq) in HNO3/H2SO4 aqueous solutions of low ionic strength (I) was studied by nanoelectrospray ionization mass spectrometry (nanoESI-MS). Several gaseous species containing LaSO4+ were detected. The formation constant of LaSO4+(aq) was determined an...

Active transepithelial sulfate secretion rate by winter flounder renal proximal tubule epithelium in primary culture (fPTC) is dependent on intracellular carbonic anhydrase (CA) and enhanced by cortisol. To further evaluate this relationship, a partial cDNA clone (327 bp) of carbonic anhydrase II (CAII) with high sequence similarity to CAII from numerous species including fish, chicken, and hum...