Peng precipitation

Broecker and Peng, p. 59 dlsscon = 7 dissolution constant in DJSS pcpcon = / carbonate precipitation constant disfac -. 01 scaling factor in dissolution rate eole/e 3/y delcorg 10 Fractionation by photosynthetic organises dcse = 2 Delta 13C Isotope ratio for sea eater, per eil... 

The protein precipitation with acetone followed by LLE with hexane was applied in the milk sample cleanup for the determination of PenG. The residue after LLE was further purified on a C2 SPE cartridge. The authors reported this method as simple and robust (recovery 82% with RSD 1%) (56). 

This method combines the advantages of liquid chromatography with the selective and sensitive receptor assay Charm H-Q test. Milk sample previously precipitated (with Mcllvaine buffer) and preconcentrated on a C8 cartridge was fractionated using an LC system. The fractions were collected according to the retention times and peak widths, and they were assayed directly with Charm II-Q test with small modifications. This method was suited for the AMO, AMP, PenG, CLO, CEF, and CEP residues in the milk samples and after small modifications for CFD, TIC, and NAF. A simple purification scheme gave recoveries from 50% for AMO to 80-90% for other /3-lactams (95). 

Dixon DJ, Johnston KP, Bodmeier RA. Polymeric materials formed by precipitation with a compressed fluid antisolvent. AIChE J 1993 39(1) 127-139. Peng DY, Robinson DB. A new two-constant equation of state. Ind Eng Chem Fundam 1976 15 59. 

Proteins precipitated out of Sauvignon Blanc and Pinot Noir wines using ammonium sulfate have been hkened to pathogenesis-related (PR) proteins. These findings are based on the fact that they have homologous sequences (Waters et al., 1996 Peng et al., 1997 Pocock et al, 1998) and identical molecular weights (Hayasaka et al.,... 

Skyllas-Kazacos M, Peng C, Cheng M. Evaluation of precipitation inhibitors for supersaturated vanadyl electrol3des for the vanadium redox battery. Electrochem Solid-State Lett 1999 2 121-2. 

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