Sedimentation Time Measurements of Soil Particles by Light Scattering and Determination of Chromium, Lead, and Iron in Soil Samples via ICP

2005 ◽  
Vol 82 (10) ◽  
pp. 1542 ◽  
Author(s):  
Patricia Metthe Todebush ◽  
Franz M. Geiger
Keyword(s):  
Light Scattering ◽  
Soil Samples ◽  
Soil Particles ◽  
Sedimentation Time

Preparation of graft copolymers by the reaction of polymeric acyl chlorides with monohydroxy-terminated polymers: An introductory study

1988 ◽  
Vol 53 (8) ◽  
pp. 1735-1744 ◽  
Author(s):  
Jitka Horská ◽  
Jaroslav Stejskal ◽  
Pavel Kratochvíl ◽  
Aubrey D. Jenkins ◽  
Eugenia Tsartolia ◽  
...  
Keyword(s):  
Light Scattering ◽  
Chemical Composition ◽  
Statistical Model ◽  
Graft Copolymers ◽  
Coupling Reaction ◽  
Molecular Characteristics ◽  
Gel Formation ◽  
Acyl Chlorides ◽  
Molecular Weights

An attempt was made to prepare well-defined graft copolymers by the coupling reaction between acyl chloride groups located along the backbone chain and monohydroxy-terminated grafts prepared separately. The molecular weights and the parameters of heterogeneity in chemical composition of the products were determined by light scattering and osmometry. The determination of molecular characteristics revealed that the degree of grafting was low. The results therefore could not be confronted with a statistical model at this stage. The problems encountered in the synthesis, e.g., gel formation, and the data relating to the soluble products are discussed.

RETRACTED: Determination of Co(II) in water and soil samples using spectrophotometry coupled with preconcentration on 4-amino methyl pyridine anchored silica gel column

2007 ◽  
Vol 146 (1-2) ◽  
pp. 137-141 ◽  
Author(s):  
C. Sivani ◽  
G. Ramakrishna Naidu ◽  
J. Narasimhulu ◽  
D. Rekha ◽  
J. Dilip Kumar ◽  
...  
Keyword(s):  
Silica Gel ◽  
Soil Samples ◽  
Water And Soil Samples ◽  
Methyl Pyridine
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