scholarly journals DFT and TOF-SIMS study of the interaction between hydrogen sulfide ion and malachite (–201) surface

2021 ◽  
Author(s):  
Yingbo Mao ◽  
Dandan Wu ◽  
Lingyun Huang
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfide Ion ◽  
Tof Sims

Residual phase lignin in haft cooking related to the conditions in the cook

1997 ◽  
Vol 12 (4) ◽  
pp. 225-229
Author(s):  
Cart-in A-S. Gustavsson ◽  
Chritofer T. Lindgren ◽  
Mikael E. Lindström
Keyword(s):  
Hydrogen Sulfide ◽  
Ionic Strength ◽  
Sodium Ion ◽  
Ion Concentration ◽  
Constant Composition ◽  
Hydroxide Ion ◽  
Sulfide Ion ◽  
Residual Phase ◽  
Kraft Cooking ◽  
Very High

Abstract The amount of lignin reacting according to the slow residual phase, i.e. the residual phase lignin, is in many perspectives an interesting issue. The purpose of the present investigation was to develop a mathematical model to show how the amount of residual phase lignin in the kraft cooking of spruce chips (Picm ahies) depends on the conditions in the earlier phases of the cook. The variables studied were hydroxide ion concentration, hydrogen sulfide ion concentration and ionic strength. The liquor-to-wood ratio during pulping was very high to maintain approximately constant chemical concentrations throughout each experiment (so called "constant composition" cooks). An increase in hydroxide ion concentration andtor hydrogen sulfide ion concentration leads to a decrease in the amount of residual phase lignin, while an increase in ionic strength, i.e. sodium ion concentration, leads to an increase. A signiticant result is that the hydrogen sulfide ion concentration has a pronounced influence on the amount of residual phase lignin during a cook at a low hydroxide ion concentration. The amount of residual phase lignin expressed as % lignin on wood, L,, can be described by the following equation developed for "constant composition" cooks (when cooking with a constant sodium ion concentration of 2 mol/L): LT=0,55-0.32*[HO-](-1,3)*ln[HS-] This equation is valid for a concentration of HO- in the range from 0.17 to 1.4, and a hydrogen sulfide ion concentration from 0.07 to 0.6 mol/L.

Development of a deep-sea hydrogen sulfide ion sensor and its application for submarine hydrothermal plume exploration

2015 ◽  
Vol 49 (6) ◽  
pp. 603-611 ◽  
Author(s):  
Kei Okamura ◽  
Taku Sugiyama ◽  
Takuroh Noguchi ◽  
Tatsuhiro Fukuba ◽  
Kyoko Okino
Keyword(s):  
Hydrogen Sulfide ◽  
Deep Sea ◽  
Hydrothermal Plume ◽  
Ion Sensor ◽  
Sulfide Ion

TOF-SIMS imaging of halide/thiocyanate anions and hydrogen sulfide in mouse kidney sections using silver-deposited plates

2011 ◽  
Vol 402 (5) ◽  
pp. 1859-1864 ◽  
Author(s):  
Noriyuki Akahoshi ◽  
Itsuko Ishizaki ◽  
Masayuki Naya ◽  
Toshihiko Maekawa ◽  
Shougo Yamazoe ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Mouse Kidney ◽  
Tof Sims

Stoichiometry of the reaction of sulfites with hydrogen sulfide ion

1977 ◽  
Vol 16 (6) ◽  
pp. 1411-1413 ◽  
Author(s):  
George W. Heunisch
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfide Ion
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