Formation of isoprene nitrates (INs) is an important free radical chain termination step ending production of ozone and possibly affecting formation of secondary organic aerosol. Isoprene nitrates also represent a potentially large, unmeasured contribution to OH reactivity and are a major pathway for the removal of nitrogen oxides from the atmosphere. Current assessments indicate that formation...

Biogenic volatile organic compounds (BVOCs) can react in the atmosphere to form organic nitrates, which serve as NOx (NO + NO2) reservoirs, impacting ozone and secondary organic aerosol production, the oxidative capacity of the atmosphere, and nitrogen availability to ecosystems. To examine the contributions of biogenic emissions and the formation and fate of organic nitrates in a forest enviro...

calcium doped nickel ferrite powders have been prepared by sol-gel combustion technique. metal nitrates, such as calcium nitrate, nickel nitrate and ferric nitrate, were used as the source materials and citric acid and polyvinyl alcohol were used as the burning agent and agglomeration reducing agent, respectively. the average crystallite size of the prepared ferrite was in the order of ~70- 92 ...

Two nanocrystalline palladium-supported tin oxide catalysts for water denitration were synthesized by a modified sol–gel technique using appropriate chloride precursors for both support and active phases, and citric acid to tune the rate of hydrolysis and condensation. The difference among sample preparation procedures refers to the moment of the noble metal loading to the support, as well as t...

Introduction Lean NOx Trap (LNT) catalysts are viable catalysts for the abatement of NOx emissions from lean–burn engines [1]. These systems work under periodic cyclic conditions, alternating lean (NOx storage) and rich conditions during which the stored NOx are reduced by a reductant. Although PtBa/Al2O3 is a typical model catalyst for this application, systems containing K have also been prop...

To increase the resistance to fungal corrosion and improve performance of concrete cement stone, it is proposed introduce calcium stearate active metal nitrates in an amount 0.5% by weight into mixture at manufacturing stage. determine degree damage stone microorganisms Aspergillus niger, porosity, density, water absorption strength were determined. It has been found that introduction a hydroph...

Background/Introduction Postoperative coronary artery spasm (CAS) is an infrequent life-threatening event after cardiac surgery. We have suggested to cross clamp aorta for short time and to inject nitrates into the aortic root in case of suspicion of CAS. It enable us to deliver nitrates especially into coronary arteries during operation (patent RU 2552890). Another method is conventional coron...

With a view to investigate the influence of nano size on various physical properties of transition metal substituted ZnO, a series of materials were prepared by different chemical routes viz; Citrate gel, polyvinyl alcohol (PVA ) precursor and Chemical solution decomposition (CSD) methods. In the citrate gel method, the starting materials were nitrates and ethylene glycol acts as a gelating rea...

The mechanism of reduction of nitrates of the alkali metals to ammonia and the formation of amino nitrogen in biochemical syntheses from inorganic nitrogen compounds have not been explained satisfactorily. Some investigators explain the transformation by assuming a direct reduction of the nitrates to ammonia by action of nascent hydrogen, while others assume an intermediate reduction of the nit...

Investigational NO-related therapeutic agents span the range from prodrugs that elevate NO levels, to scavengers of NO, and inhibitors of endogenous NO synthesis. Related agents that influence nitrogen oxides, in addition to NO itself, are also to be considered. Organic nitrates have been used for over 130 years in cardiovascular therapy and hybrid nitrates continue to lead the way in clinical ...