Formation of Paramagnetic Species in Sodium Nitrite irradiated at Room Temperature

Nature ◽  
1965 ◽  
Vol 206 (4979) ◽  
pp. 83-84 ◽  
Author(s):  
N. M. ATHERTON ◽  
R. N. DIXON ◽  
G. H. KIRBY
Keyword(s):  
Sodium Nitrite ◽  
Room Temperature ◽  
Paramagnetic Species

Magnetic resonance studies of metal–olefin complexes. I. Electron spin resonance spectra of γ-irradiated silver perchlorate cycloalkene complexes

1970 ◽  
Vol 48 (17) ◽  
pp. 2740-2744 ◽  
Author(s):  
D. R. Gee ◽  
K. E. Russell ◽  
J. K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Magnetic Resonance ◽  
Spin Density ◽  
Room Temperature ◽  
Paramagnetic Species ◽  
Magnetic Resonance Studies ◽  
Silver Perchlorate ◽  
Spin Resonance ◽  
The Stability ◽  
Polycrystalline Silver

Paramagnetic species have been detected in γ-irradiated polycrystalline silver perchlorate – cycloalkene complexes at room temperature and identified as Ag+ cycloalkenyl radicals, with spin density on Ag decreasing from 4.6 to 1.5% with increasing size of the cycloalkenyl ring. The extent of the spin density on Ag increases with the stability of the parent complexes.

scholarly journals An Alternative Process for Leaching Chalcopyrite Concentrate in Nitrate-Acid-Seawater Media with Oxidant Recovery

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 518 ◽  
Author(s):  
César I. Castellón ◽  
Pía C. Hernández ◽  
Lilian Velásquez-Yévenes ◽  
María E. Taboada
Keyword(s):  
Particle Size ◽  
Sulfuric Acid ◽  
Alkaline Solution ◽  
Sodium Nitrite ◽  
Sodium Nitrate ◽  
Room Temperature ◽  
Leaching Test ◽  
Copper Concentrate ◽  
Leaching Process ◽  
Chalcopyrite Concentrate

An alternative copper concentrate leaching process using sodium nitrate and sulfuric acid diluted in seawater followed by gas scrubbing to recover the sodium nitrate has been evaluated. The work involved leaching test carried out under various condition by varying temperature, leaching time, particle size, and concentrations of NaNO3 and H2SO4. The amount of copper extracted from the chalcopyrite concentrate leached with seawater, 0.5 M of H2SO4 and 0.5 M of NaNO3 increased from 78% at room temperature to 91% at 45 °C in 96 h and 46 h of leaching, respectively. Gas scrubbing with the alkaline solution of NaOH was explored to recover part of the sodium nitrate. The dissolved salts were recovered by evaporation as sodium nitrate and sodium nitrite crystals.

scholarly journals Determination of Diethanolamine in Shampoo Products Containing Fatty Acid Diethanolamides by Liquid Chromatography with a Thermal Energy Analyzer

2005 ◽  
Vol 88 (2) ◽  
pp. 592-594 ◽  
Author(s):  
Hardy J Chou
Keyword(s):  
Acetic Acid ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
Thermal Energy ◽  
Sodium Nitrite ◽  
Room Temperature ◽  
Energy Analyzer

Abstract A liquid chromatography (LC) method using a thermal energy analyzer (TEA) is described for the determination of diethanolamine (DEA) in shampoo products containing fatty acid diethanolamides. DEA was converted to N-nitrosodiethanolamine (NDELA) by dissolving a portion of the product in 6M acetic acid and mixing with sodium nitrite for 1 h at room temperature. The reaction mixture was dried, dissolved in acetone, and analyzed for NDELA by LC-TEA. The recovery of DEA from 2 shampoo products at fortification levels of 25, 250, and 1000 ppm ranged from 70 to 105%. Twenty shampoo products were analyzed by this method, and 19 were found to contain DEA at levels ranging from 140 to 15 200 ppm.

scholarly journals The reaction between aluminium metal and aqueous solutions of the nitrite ion

1980 ◽  
Vol 33 (1) ◽  
pp. 169 ◽  
Author(s):  
PJ Hyde ◽  
IM Ritchie
Keyword(s):  
Aqueous Solutions ◽  
Induction Period ◽  
Sodium Nitrite ◽  
Room Temperature ◽  
Nitrite Ion ◽  
Aluminium Metal ◽  
Mechanism Of The Reaction

The reaction between aluminium metal and a 0.1 wt % solution of sodium nitrite at room temperature is described. Initially the reaction is slow, but after an induction period the aluminium corrodes catastrophically. The products of the reaction were identified as ammonia, hydrogen and bayerite. A possible mechanism of the reaction is suggested.

Brillouin scattering in sodium nitrite at room temperature

1972 ◽  
Vol 11 (1) ◽  
pp. 255-261 ◽  
Author(s):  
G. Hauret ◽  
J. P. Chapelle ◽  
L. Taurel
Keyword(s):  
Sodium Nitrite ◽  
Room Temperature ◽  
Brillouin Scattering

THE PHYSICAL PROPERTIES OF RuS2 − xSex SINGLE CRYSTALS

1993 ◽  
Vol 07 (05) ◽  
pp. 271-290 ◽  
Author(s):  
SHOEI-SHENG LIN ◽  
JENG-KUANG HUANG ◽  
YING-SHENG HUANG
Keyword(s):  
Electrical Transport ◽  
Room Temperature ◽  
Paramagnetic Species ◽  
Electrical Transport Properties ◽  
Defect Model ◽  
Paramagnetic Resonance ◽  
Point Defect Model ◽  
Long Wavelength ◽  
Electron Paramagnetic

In this review, the preparation and characterization of the pyrite-type compound RuS 2 and RuSe 2, as well as the mixed anion compositions RuS 2 − x Se x, are systematically reported. Unusual temperature dependence in electrical transport properties characterize these compounds. Electrolyte electroreflectance measurements were used to get a better understanding of their band structure. Long-wavelength optical phonons have been studied by Raman scattering measurements at room temperature. The nature of defect in these compounds were studied by electron paramagnetic resonance (EPR) investigation. A chalcogen point defect model was established to account for the spin S = 1/2 paramagnetic species detected by EPR.

scholarly journals COLOR, PIGMENT AND RESIDUAL NITRITE OF DENDENG SAPI NATURALLY CURED AT VARIOUS LEVEL OF CELERY LEAVES AND INCUBATION TEMPERATURES

2016 ◽  
Vol 41 (2) ◽  
pp. 99-105 ◽  
Author(s):  
E. Saputro ◽  
V. P. Priyo Bintoro ◽  
Y. B. Budi Pramono
Keyword(s):  
Sodium Nitrite ◽  
Room Temperature ◽  
Incubation Temperature ◽  
Total Pigment ◽  
Curing Characteristics ◽  
Residual Nitrite ◽  
Incubation Temperatures ◽  
Color Pigment

his study was conducted to analyze the effect of natural curing by various levels of fresh celery leaves (FCL) and various levels of incubation temperature. The incubation temperature was room temperature (RT) and temperature of 40.6oC (40.6) for 2 hours. These incubation temperatures for creating dendeng sapi were designed to provide the similar curing characteristics of the control (by addition of 50 ppm of NaNO2). Four naturally cured dendeng sapi treatments were A1 = 22 g FCL/kg of beef, RT; A2 = 36 g FCL/kg of beef, RT; A3 = 22 g FCL/kg of beef, 40.6; A4 = 36 g FCL/kg of beef, 40.6 and a treatment of conventionally cured dendeng sapi by addition of 50 ppm NaNO2 as a control (A0 ). All of the naturally cured dendeng sapi (A1-A4) showed color, cured pigment, total pigment and residual nitrite which were not significantly different compared with A0 . The FCL used in this study was an effective replacement for sodium nitrite at the test levels in manufacturing natural cured dendeng sapi. These results indicated that at fewer FCL levels (22 g/kg of beef) and a more practical of the incubation for 2 hours at room temperature were more effective to create naturally cured dendeng sapi.

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