UraniumIV sulfate in an aqueous solution and the solid state has been investigated with extended X-ray absorption fine structure (EXAFS) and X-ray diffraction (XRD). The coordination polyhedron comprises monodentate sulfate, bidentate sulfate, and water molecules. The coordination modes of sulfate in solution have been determined from the U-S distances with EXAFS. The U-S distance of 3.67 +/- 0...

In this study, the water-soluble inorganic ions (WSIIs) composition of fine particulate matter (PM2.5) was measured in northern Nanjing city from 2015 to 2021. NH4+, NO3− and SO42− concentrations dominated total WSIIs (Na+, K+, Mg2+, Ca2+, Cl−, SO42−), accounting for 87.8%. The nitrate with highest average concentration among all 11.0 μg·m−3. Total were higher winter lower summer, levels Decemb...

In this study, a solid solution of arsenical ammonium-sodium jarosite, with the approximate formula [(NH4)0.72 Na0.06(H3O)0.21]Fe3(2.52)(SO4)1.85 (AsO4)0.15 [(OH)4.41 (H2O)1.59], was synthesized. The precipitate particle main size 38 µm, spherical morphology. A decomposition reaction in alkaline media carried out; comprised three stages: an induction period, progressive conversion and stabiliza...

Sulfur and oxygen isotopes were employed to identify SO42- sources in surface water and groundwater in the Babu subterranean river basin (BSRB). Our study revealed SO42- enrichment in the BSRB waters compared with adjacent areas. The SO42- in some samples originated mainly from precipitation; in others, it was derived mainly from sulfide dissolution in coal seams or from gypsum dissolution. In ...

Abstract. Daily air concentrations of inorganic nitrogen (N) species, including gaseous HNO3 and particulate-bound (p)NH4+ pNO3-, sulfur (S) SO2 pSO42-, precipitation NO3-, NH4+, SO42-, have been routinely monitored by the Canadian Air Precipitation Monitoring Network (CAPMoN) since 1983. Data at 15 rural sites from 2000–2018 were used to estimate dry wet N S deposition fluxes, which then explo...

1. Electrophysiological techniques have been applied to tsetse fly Malpighian tubules for the first time. 2. In either Cl- or SO42- Ringer, both non-perfused and perfused tubules displayed transtubular potentials (Vt) at or close to 0 mV. Exposure to cyclic AMP elicited a marked secretory response and, in SO42- Ringer, a sharp (lumen-positive) increase in Vt. In Cl- Ringer, despite more than do...

BACKGROUND The finding reported in a previous paper - alkalization of urine facilitates uric acid excretion - is contradictory to what one might expect to occur: because food materials for the alkalization of urine contain fewer purine bodies than those for acidification, less uric acid in alkaline urine should have been excreted than in acid urine. To make clear what component of uric acid exc...

Precipitation samples were collected over Arabian Sea during Monsoon Experiment (ARMEX) campaign for the period June- August 2002 onboard Ocean Research vessel Sagar Kanya. All rain water analysed pH and major soluble ionic components. The of was alkaline order chemical composition is followed as Cl- > Na+ Ca2+ SO42- Mg2+ K+ NO3- NH4+. salt components dominant (~ 90%) in precipitation. Signi...