scholarly journals Determination of Very Low Concentration of Polyacrylamide and Polyethyleneoxide Flocculants by Nephelometry

1979 ◽  
Vol 8 (11) ◽  
pp. 1120-1121
Author(s):  
Yosry A. Attia ◽  
Jorge Rubio
Keyword(s):  
Low Concentration

Determination of metals of low concentration in high purity copper by atomic absorption spectrophotometry

1975 ◽  
Vol 63 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Katalin Z. Balla ◽  
Etelka G. Hars�nyi ◽  
L�szl� P�los ◽  
Ern� Pungor
Keyword(s):  
Atomic Absorption ◽  
High Purity ◽  
Atomic Absorption Spectrophotometry ◽  
Low Concentration ◽  
Absorption Spectrophotometry ◽  
Purity Copper

The determination of true decay time of fluorescence of dye solutions at a very low concentration

1977 ◽  
Vol 43 (2) ◽  
pp. 109-115
Author(s):  
I. Ketskeméty ◽  
L. Gáti ◽  
A. Győri ◽  
L. Kozma
Keyword(s):  
Decay Time ◽  
Low Concentration ◽  
Dye Solutions

scholarly journals Determination of low concentration of chloride ions in small volume aqueous sample by reflectance spectrophotometry.

1986 ◽  
Vol 35 (8) ◽  
pp. 777-779
Author(s):  
Mutsuko YAMAGISHI ◽  
Masamitsu KATAOKA ◽  
Kunio OHZEKI ◽  
Yoshio UMEZAWA
Keyword(s):  
Small Volume ◽  
Chloride Ions ◽  
Aqueous Sample ◽  
Reflectance Spectrophotometry ◽  
Low Concentration

Cermets de Cu-PbI2 en couches minces: fabrication et détermination des constantes optiques

1983 ◽  
Vol 61 (4) ◽  
pp. 612-616 ◽  
Author(s):  
Jean-Marc Theriault ◽  
Germain Boivin
Keyword(s):  
Mass Concentration ◽  
Optical Constants ◽  
Evaporation Rate ◽  
Vacuum Evaporation ◽  
Index Of Refraction ◽  
Homogeneous Mixture ◽  
Lead Iodide ◽  
Low Concentration ◽  
Photometric Measurements

In this paper, we describe a method of fabrication of metal–dielectric mixtures (cermets) deposited by vacuum evaporation. Our study is mainly concerned with co-evaporated mixtures of copper and lead iodide. The stabilization of the evaporation rate of copper and lead iodide enables us to obtain a homogeneous mixture of these twø materials whose mass concentration C is determined from a previous calibration. Photometric measurements carried out on these films lead to the determination of the optical constants N (the index of refraction) and K (the coefficient of absorption). We present here the results obtained for mixtures of low concentration in copper. These results are compared with those obtained from the Maxwell–Garnett theory.

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