The regularities of formation and electronic characteristic of photolytic silver on the surface of sols and microcrystals (MC) AgBr of various sizes and habits, as well primitive, as subjected to chemical sensitization was explored by transmission electronic microscopy (TEM) and x-ray photoelectron spectroscopy (XPS) methods. XPSresults were compared to condition of silver in sols and MC AgBr, ...

Abstract. Nitrate in Antarctic snow has seasonal cycles nitrogen and oxygen isotopic ratios that reflect its sources atmospheric formation processes, as a result, nitrate archived ice should have great potential to record chemistry changes over thousands of years. However, sunlight strikes the surface results photolytic loss fractionation can completely obscure nitrate's original values. To gai...

A novel stability-indicating gradient reverse phase ultra-performance liquid chromatographic (RP-UPLC) method was developed for the determination of purity of desloratadine in presence of its impurities and forced degradation products. The method was developed using Waters Aquity BEH C18 column with mobile phase containing a gradient mixture of solvents A and B. The eluted compounds were monito...

Tablets of mutual prodrugs of ibuprofen, i.e, ‘ibuprofen with paracetamol’ and ‘ibuprofen with salicylamide,’ were prepared by direct compression method. The preformulation studies such as flow property, solid state stability at elevated temperatures, solid state stability under different humidity conditions, photolytic stability and compatibility studies of prodrugs with excipients were also p...

Many water bodies, especially those adjacent to aquaculture and livestock breeding areas, are contaminated by both antibiotics and transition metals. However, the effects of the interaction between antibiotics and transition metals on the environmental behavior and the ecotoxicology of antibiotics are largely unknown. We hypothesized that antibiotics may coordinately bind with metal ions, and t...