Extraction of several metals from chloride salt solutions with heptafluorodimethyloctanedione

1986 ◽  
Vol 31 (2) ◽  
pp. 136-143 ◽  
Author(s):  
F. G. Seeley ◽  
W. J. McDowell ◽  
L. K. Felker
Keyword(s):  
1963 ◽  
Author(s):  
G E Benedict ◽  
K M Harmon ◽  
G Jr Jansen ◽  
L K Mudge ◽  
F A Scott

1984 ◽  
Vol 47 (7) ◽  
pp. 537-541 ◽  
Author(s):  
C. P. APPL ◽  
R. T. MARSHALL

The purpose of this study was to test the hypothesis that numbers of bacteria detached from meat could be increased by modification of the ionic environment surrounding both the meat and bacterial surfaces. Of five 0.1 M chloride salt solutions that were used to rinse cells of Pseudomonas fluorescens P26 from meat, KCl removed the highest average number of cells. These numbers were significantly greater than those for NH4Cl and MgCl2. Compared with water, the solution of 0.1 M KCl rinsed three times as many bacteria from cubes of inoculated meat shaken in solution for 1 min and there were one-half as many bacteria recovered from meat rinsed with KCl as from meat rinsed with water. The latter difference was significant, and we conclude that KCl assisted in detachment of the pseudomonads. However, no significant effect of 0.1 M KCl was observed when it was added to water that had been buffered to pH 4 and 5 with citrate-phosphate buffer. Instead, the buffered rinse caused a large loss in viability of the pseudomonads. This large loss in viability may have over-shadowed the smaller effect of KCl.


1981 ◽  
Vol 29 (6) ◽  
pp. 1143-1146 ◽  
Author(s):  
John D. Gaynor ◽  
V. Van Volk
Keyword(s):  

2019 ◽  
Vol 3 (2) ◽  
pp. 58 ◽  
Author(s):  
Tania Sabnam Binta Monir ◽  
Sadia Afroz ◽  
Ruhul A. Khan ◽  
Muhammed Yusuf Miah ◽  
Makoto Takafuji ◽  
...  

Hydrogel as a good water absorbent has attracted great research interest. A series of hydrogel based on polyethylene oxide (PEO) and acrylic acid (AAc) was prepared by applying gamma radiation with variation in the concentration of acrylic acid. Fourier transform infrared (FTIR) and scanning electron microscopy (SEM) were used to characterize the PEO/ AAc hydrogel. The properties of the prepared hydrogels such as gel content, swelling behavior, tensile strength, and pH sensitivity were evaluated. The formation of the hydrogels was confirmed from FTIR spectra. SEM images showed the inner porous structure of the hydrogels. The dose of gamma radiation was optimized to get a hydrogel with good swelling property and mechanical strength. The swelling ratio and gel content of the hydrogels were increased with increasing acrylic acid content. The pH of the solutions affected the swelling which indicated the pH-responsive property of the prepared hydrogels. Swelling of the prepared hydrogels in sodium chloride salt solutions decreased with increasing the ionic strength.


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