Characterization of Organic Compounds Collected during Southeastern Aerosol and Visibility Study:  Water-Soluble Organic Species

2005 ◽  
Vol 39 (3) ◽  
pp. 707-715 ◽  
Author(s):  
Liya E. Yu ◽  
Michelle L. Shulman ◽  
Royal Kopperud ◽  
Lynn M. Hildemann
2003 ◽  
Vol 37 (7) ◽  
pp. 1229-1240 ◽  
Author(s):  
A. Cappiello ◽  
E. De Simoni ◽  
C. Fiorucci ◽  
F. Mangani ◽  
P. Palma ◽  
...  

2000 ◽  
Vol 105 (D1) ◽  
pp. 1481-1489 ◽  
Author(s):  
Stefano Decesari ◽  
Maria Cristina Facchini ◽  
Sandro Fuzzi ◽  
Emilio Tagliavini

2015 ◽  
Vol 150-151 ◽  
pp. 265-275 ◽  
Author(s):  
Yaling Zhu ◽  
Andrea Vieth-Hillebrand ◽  
Franziska D.H. Wilke ◽  
Brian Horsfield

Author(s):  
B. J. Grenon ◽  
A. J. Tousimis

Ever since the introduction of glutaraldehyde as a fixative in electron microscopy of biological specimens, the identification of impurities and consequently their effects on biologic ultrastructure have been under investigation. Several reports postulate that the impurities of glutaraldehyde, used as a fixative, are glutaric acid, glutaraldehyde polymer, acrolein and glutaraldoxime.Analysis of commercially available biological or technical grade glutaraldehyde revealed two major impurity components, none of which has been reported. The first compound is a colorless, water-soluble liquid with a boiling point of 42°C at 16 mm. Utilizing Nuclear Magnetic Resonance (NMR) spectroscopic analysis, this compound has been identified to be — dihydro-2-ethoxy 2H-pyran. This impurity component of the glutaraldehyde biological or technical grades has an UV absorption peak at 235nm. The second compound is a white amorphous solid which is insoluble in water and has a melting point of 80-82°C. Initial chemical analysis indicates that this compound is an aldol condensation product(s) of glutaraldehyde.


Tellus B ◽  
2011 ◽  
Vol 63 (5) ◽  
Author(s):  
Puja Khare ◽  
B. P. Baruah ◽  
P. G. Rao

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