THE PHOTOLYSIS OF POTASSIUM NITRATE SOLUTIONS

1924 ◽  
Vol 46 (4) ◽  
pp. [797]-802 ◽  
Author(s):  
William Theodore Anderson
Keyword(s):  
Potassium Nitrate ◽  
Nitrate Solutions

scholarly journals A Tunable Freeform-Segmented Reflector in a Microfluidic System for Conventional and Surface-Enhanced Raman Spectroscopy

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1250 ◽  
Author(s):  
Qing Liu ◽  
Michael Stenbæk Schmidt ◽  
Hugo Thienpont ◽  
Heidi Ottevaere
Keyword(s):  
Raman Scattering ◽  
Microfluidic Chip ◽  
Numerical Approach ◽  
Surface Enhanced Raman Spectroscopy ◽  
Potassium Nitrate ◽  
Microfluidic System ◽  
Diamond Turning ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nitrate Solutions

We present a freeform-segmented reflector-based microfluidic system for conventional Raman and Surface-Enhanced Raman Scattering (SERS) analysis. The segmented reflector is directly designed by a numerical approach. The polymer-based Raman system strongly suppresses the undesirable background because it enables confocal detection of Raman scattering through the combination of a freeform reflector and a microfluidic chip. We perform systematic simulations using non-sequential ray tracing with the Henyey-Greenstein model to assess the Raman scattering behavior of the substance under test. We fabricate the freeform reflector and the microfluidic chip by means of ultra-precision diamond turning and laser cutting respectively. We demonstrate the confocal behavior by measuring the Raman spectrum of ethanol. Besides, we calibrate the setup by performing Raman measurements on urea and potassium nitrate solutions with different concentrations. The detection limit of our microfluidic system is approximately 20 mM according to the experiment. Finally, we implement a SERS microfluidic chip and discriminate 100 µM urea and potassium nitrate solutions.

The rate of nucleation of supersaturated potassium nitrate solutions

1959 ◽  
Vol 14 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Malcolm L White ◽  
Arthur A Frost
Keyword(s):  
Potassium Nitrate ◽  
Nitrate Solutions

scholarly journals The effect of temperature on the permeability of protoplasmic membrane

1928 ◽  
Vol 103 (724) ◽  
pp. 272-288
Keyword(s):  
Potassium Nitrate ◽  
Hydrogen Ion ◽  
Effect Of Temperature ◽  
Root Cells ◽  
Molecular Concentration ◽  
Different Temperatures ◽  
The Subject ◽  
Cell Electrolytes ◽  
Nitrate Solutions ◽  
Absorption Of Hydrogen

The effect of temperature on permeability of plant cells has been studied by numerous investigators. Stiles (8) gives a comprehensive summary of the existing work on the subject. The data regarding the effect of temperature on permeability to solutes are neither as numerous nor as conclusive as those for the intake and excretion of -water. Pfeffer (1886) and Collander (1921) have observed the intake dyes (8). Rysselberg (1901) and Lepeschkin (1905) have investigated the permeability of epidermal cells to glycerol car­bamide and potassium nitrate at different temperatures. To correlate the change of permeability with positive and negative thermotropism Eckerson (1914) observed the molecular concentration of sucrose, glucose and potassium nitrate solutions, needed to induce slight plasmolysis in root cells at different temperatures (1). Stiles and Jörgensen (9) have studied the effect of tempera­ture on absorption of hydrogen ion by storage tissues. In all the above investigations only the intake of solutes by cells, and that under environmental conditions unnatural to cells, has been studied. So far as I am aware, Blackman and Paine (3) are the only investigators who have studied the exosmosis of the normal cell electrolytes by measuring the change of conductivity of the water in which a pulvinus of mimosa pudica was placed.

Complexation of ampicillin with Zn and Cd cations in potassium nitrate solutions

2006 ◽  
Vol 32 (7) ◽  
pp. 469-473 ◽  
Author(s):  
V. G. Alekseev ◽  
E. A. Milashs ◽  
S. V. Larin ◽  
O. Yu. Shigina
Keyword(s):  
Potassium Nitrate ◽  
Nitrate Solutions
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