Computational Chemistry Commons^™

Eis Characteristics Of Anodic Dissolution For P110 Steel Under Co2 Environment, Jing Li, Dong-Bai Sun, Hong-Ying Yu, Hui-Min Meng, Hui-Qin Li, De-Jun Yang

Journal of Electrochemistry

Effect of temperature on the electrochemical impedance spectroscopy for P110 steel at anodic polarized potential was investigated in simulated CO₂ saturated oil produced water. The results demonstrated that in the range from room temperature to 90 ℃, there was a critical temperature , below which a three time constant impedance spectrum was observed and above which a two time constant spectrum was shown. A reasonable explanation was given to this phenomenon in an effort to elucidate the mechanism of anodic dissolution and characteristics of CO₂ corrosion.

Kinetics Of Proteolyic Enzymes Monitored Online With Mass Spectrometry, Jennifer L. Rutherford

Theses, Dissertations and Capstones

On-line reaction monitoring using electrospray ionization mass spectrometry was investigated with the goal of kinetically distinguishing the isomeric amino acids leucine and isoleucine. Leucine and isoleucine are isomers of identical mass (113.0946 Da) which are impossible to distinguish by their mass-to-charge ratios. These isomers are a source of ambiguity when sequencing peptides with exoproteases and mass spectrometry. Here we investigated the kinetics of on-line enzymatic reactions involving exoproteases for differentiating between leucine and isoleucine.

The kinetics of the stepwise exopeptidase degradation of 12 leucine/isoleucine isomeric peptides was monitored in real-time with a Finnigan Mat LCQ with an electrospray ionization source. …