Group separation of organic nitrates on a new nitric acid ester NP-LC stationary phase

1998 ◽  
Vol 47 (3-4) ◽  
pp. 157-163 ◽  
Author(s):  
J. Kastler ◽  
V. Dubourg ◽  
R. Deisenhofer ◽  
K. Ballschmiter
Keyword(s):  
Nitric Acid ◽  
Stationary Phase ◽  
Acid Ester ◽  
Organic Nitrates ◽  
Group Separation ◽  
Nitric Acid Ester

Pectin studies. Part III. The nitric acid ester (preliminary)

1948 ◽  
Vol 67 (3) ◽  
pp. 101-104 ◽  
Author(s):  
L. H. Lampitt ◽  
R. W. Money ◽  
A. Urie ◽  
B. E. Judge
Keyword(s):  
Nitric Acid ◽  
Acid Ester ◽  
Nitric Acid Ester

Separation of U and Pu by countercurrent chromatography with support-free liquid stationary phase in the TBP white spirit nitric acid system

2006 ◽  
Vol 48 (3) ◽  
pp. 284-287
Author(s):  
M. N. Litvina ◽  
D. A. Malikov ◽  
T. A. Maryutina ◽  
Yu. M. Kulyako ◽  
B. F. Myasoedov
Keyword(s):  
Nitric Acid ◽  
Stationary Phase ◽  
White Spirit ◽  
Countercurrent Chromatography ◽  
Acid System ◽  
Liquid Stationary Phase

scholarly journals New Possibility for REE Determination in Oil

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Alexander Soin ◽  
Tatiana Maryutina ◽  
Natalya Musina ◽  
Andrey Soin
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Stationary Phase ◽  
Inductively Coupled Plasma ◽  
Sample Pretreatment ◽  
Accurate Method ◽  
Inductively Coupled ◽  
Novel Approach ◽  
Icp Ms

A novel approach of rare earth elements (REE) determination in crude oil is suggested. Special application of countercurrent chromatography (CCC) is used as a sample pretreatment tool. An oil sample is continuously pumped through the rotating coil column (RCC) as a mobile phase, while an aqueous phase (nitric acid solution) is retained as a stationary phase. Two phases are kept well mixed and agitated, but there is no emulsion at the interface under the chosen conditions. Special features of CCC give an opportunity to vary the volume of oil samples to be analyzed from 10 mL to 1 L or more. Trace metals are preconcentrated into 10 mL of stationary phase (acidic solutions) pumped out of the column so that analysis can be easily determined with inductively coupled plasma mass spectrometry (ICP-MS) without additional sample preparation procedures. Optimal concentration of nitric acid in the stationary phase for preconcentration of REE from oil by CCC has been investigated. The combination of CCC with ICP-MS gives the possibility to develop a rapid, reliable, and accurate method of trace metal including rare earth elements (REE) determination in crude oils and oil products. Such method could be an alternative for unexpanded and expensive neutron-activation analysis (NAA).

Nitratoethyl-5H-tetrazoles: Improving Oxygen Balance through Application of Organic Nitrates in Energetic Coordination Compounds

2021 ◽  
Author(s):  
Joerg Stierstorfer ◽  
Michael S. Gruhne ◽  
Thomas M. Klapoetke ◽  
Tobias Lenz ◽  
Markus Rösch ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Coordination Compounds ◽  
Organic Nitrates ◽  
Oxygen Balance

1- and 2-Nitratoethyl-5H-tetrazole (1-NET, 2-NET) were prepared through nitration of the respective alkyl alcohol using 100% nitric acid. A mixture of 1- and 2-hydroxyethyl-5H-tetrazole was obtained after alkylation of 1,5H-tetrazole....

Group separation of PCDDs, PCDFs, PACs and aliphatic compounds on an amino bonded stationary phase for HPLC

1987 ◽  
Vol 24 (1) ◽  
pp. 541-544 ◽  
Author(s):  
A. L. Colmsjö ◽  
Y. U. Zebühr ◽  
Conny E. Östman
Keyword(s):  
Stationary Phase ◽  
Group Separation ◽  
Aliphatic Compounds

Nitric acid adsorption by a phosphonic acid ester type adsorbent

1995 ◽  
Vol 29 (5) ◽  
pp. 1267-1271 ◽  
Author(s):  
Yoshio Sato ◽  
Katsuo Murayama ◽  
Toshihiro Nakai ◽  
Nobuyuki Takahashi
Keyword(s):  
Nitric Acid ◽  
Phosphonic Acid ◽  
Acid Ester

Effective charge-discriminated group separation of metal ions under highly acidic conditions using nanodiamond-pillared graphene oxide membrane

2017 ◽  
Vol 5 (17) ◽  
pp. 8051-8061 ◽  
Author(s):  
Lei Wang ◽  
Xinghua Guo ◽  
Kecheng Cao ◽  
Bo Li ◽  
Yang Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nitric Acid ◽  
Acid Solution ◽  
Metal Ions ◽  
Nitric Acid Solution ◽  
Effective Charge ◽  
Group Separation ◽  
Separation Of Metal Ions ◽  
Acidic Conditions ◽  
Oxide Membrane

Precise charge-discriminated group separation of coexisting cations in nitric acid solution was achieved by the as-prepared nanodiamond-pillared graphene oxide membrane.

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