Unraveling the Role of Sulfur Compounds in Acid Rain Formation: Experiments on a Wetted Glass pH Electrode

2010 ◽  
Vol 87 (2) ◽  
pp. 157-161
Author(s):  
Fernando S. Lopes ◽  
Lúcia H. G. Coelho ◽  
Ivano G. R. Gutz
Keyword(s):  
Acid Rain ◽  
Sulfur Compounds ◽  
Glass Ph Electrode ◽  
Rain Formation ◽  
Ph Electrode

Electrode and cuvette for rapid continuous CO2 tension and pH measurement in blood

1985 ◽  
Vol 59 (5) ◽  
pp. 1660-1664
Author(s):  
S. A. Katz ◽  
A. C. Roth ◽  
E. O. Feigl
Keyword(s):  
Carbonic Anhydrase ◽  
Response Time ◽  
Electrode Surface ◽  
Porous Ceramic ◽  
Reference Electrode ◽  
Silicone Membrane ◽  
Dimethyl Silicone ◽  
Glass Ph Electrode ◽  
Co2 Electrode ◽  
Ph Electrode

An electrode and cuvette system has been developed for the continuous and rapid measurement of either blood CO2 tension or pH. The CO2 electrode consists of a 1.5-mm-diameter flat-tip glass pH electrode covered by a film of carbonic anhydrase solution, over which a 25-micron-thick dimethyl silicone membrane is attached. Porous ceramic filled with 20% polyacrylamide, equilibrated with a salt solution, serves as a salt bridge between a Ag-AgCl reference electrode and the pH electrode surface. The electrode is housed in a four-port cuvette assembly. Blood from a vessel of interest is delivered to the cuvette by means of an occlusive roller pump. The cuvette maintains the electrode and blood at a constant temperature and directs a continuous jet of blood against the electrode surface. The cuvette also allows for easy and frequent calibration of the electrode with either gas or liquid standards. The 90% response time of the CO2 electrode is 3.0 s for liquids and 1.3 s for gases. Removal of the dimethyl silicone membrane and carbonic anhydrase film yields a pH electrode that can continuously measure blood pH with a 90% response time of 1.6 s.

Disulfate Ion as an Intermediate to Sulfuric Acid in Acid Rain Formation

Science ◽  
1987 ◽  
Vol 237 (4816) ◽  
pp. 756-758 ◽  
Author(s):  
S. G. CHANG ◽  
D. LITTLEJOHN ◽  
K. Y. Hu
Keyword(s):  
Sulfuric Acid ◽  
Acid Rain ◽  
Rain Formation

Deterioration of marble structures. The role of acid rain

1987 ◽  
Vol 59 (2) ◽  
pp. 104A-106A ◽  
Author(s):  
Roger J. Cheng ◽  
Jih Ru Hwu ◽  
Jung T. Kim ◽  
Show Mei Leu
Keyword(s):  
Acid Rain

scholarly journals Sulfur and Sulfur Compounds in Plant Defence

2012 ◽  
Vol 7 (3) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Ifeanyi D. Nwachukwu ◽  
Alan J. Slusarenko ◽  
Martin C. H. Gruhlke
Keyword(s):  
Natural Products ◽  
New Technologies ◽  
Plant Defence ◽  
Sulfur Compounds ◽  
Oxidation States ◽  
Chemical Structures ◽  
Wide Range ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

The multiplicity of chemical structures of sulfur containing compounds, influenced in part by the element's several oxidation states, directly results in diverse modes of action for sulfur-containing natural products synthesized as secondary metabolites in plants. Sulfur-containing natural products constitute a formidable wall of defence against a wide range of pathogens and pests. Steady progress in the development of new technologies have advanced research in this area, helping to uncover the role of such important plant defence molecules like endogenously-released elemental sulphur, but also deepening current understanding of other better-studied compounds like the glucosinolates. As studies continue in this area, it is becoming increasingly evident that sulfur and sulfur compounds play far more important roles in plant defence than perhaps previously suspected.

5. The Role of Sulfur Compounds in Coloring and Melting Kinetics of Industrial Glass

2011 ◽  
pp. 113-142 ◽  
Author(s):  
Roberto Falcone ◽  
Stefano Ceola ◽  
Antonio Daneo ◽  
Stefano Maurina
Keyword(s):  
Sulfur Compounds ◽  
Industrial Glass ◽  
Melting Kinetics ◽  
Kinetics Of

scholarly journals Effect of Drop-Phase Oxidation on Acid Rain Formation

1997 ◽  
Vol 41 ◽  
pp. 581-586
Author(s):  
Sadataka SHIBA ◽  
Yushi HIRATA ◽  
Shunsaku YAGI
Keyword(s):  
Acid Rain ◽  
Phase Oxidation ◽  
Rain Formation ◽  
Drop Phase

A Study of the Mechanisms of Acid Rain Formation

1987 ◽  
Vol 44 (21) ◽  
pp. 3162-3174 ◽  
Author(s):  
Farn Parungo ◽  
Clarence Nagamoto ◽  
Robin Maddl
Keyword(s):  
Acid Rain ◽  
Rain Formation
Sign in / Sign up

Export Citation Format

Share Document