Chemical degradation products of lignin and humic substances Part II Synthesis, structure verification and liquid chromatographic separation of chlorinated protocatechualdehydes (3,4-dihydroxy-benzaldehydes), 5-hydroxyvanillins (3,4-dihydroxy-5-methoxy-benzaldehydes) and gallaldehydes (3,4,5-trihydroxybenzaldehydes)
摘要:
All possible chloroprotocatechualdehydes, chlorogalladehydes, 5-bromoprotoratechualdehyde and chloro-5-hydroxyvanillins except 2-chloro-5-hydroxyvanillin) were synthesized. Their purity and structures were examined by liquid chromatography, mass spectrometry and other spectroscopic measurements. The details of the synthesis, liquid chromatographic separation and mass spectrometric features are discussed.
Chemical degradation products of lignin and humic substances Part II Synthesis, structure verification and liquid chromatographic separation of chlorinated protocatechualdehydes (3,4-dihydroxy-benzaldehydes), 5-hydroxyvanillins (3,4-dihydroxy-5-methoxy-benzaldehydes) and gallaldehydes (3,4,5-trihydroxybenzaldehydes)
作者:J. Hyötyläinen
DOI:10.1016/0045-6535(94)90423-5
日期:1994.5
All possible chloroprotocatechualdehydes, chlorogalladehydes, 5-bromoprotoratechualdehyde and chloro-5-hydroxyvanillins except 2-chloro-5-hydroxyvanillin) were synthesized. Their purity and structures were examined by liquid chromatography, mass spectrometry and other spectroscopic measurements. The details of the synthesis, liquid chromatographic separation and mass spectrometric features are discussed.
Metabolites of Chlorinated Syringaldehydes in Fish Bile as Biomarkers of Exposure to Bleached Eucalypt Pulp Effluents
作者:Carolyn M. Brumley、Victoria S. Haritos、Jorma T. Ahokas、Douglas A. Holdway
DOI:10.1006/eesa.1996.0032
日期:1996.4
Metabolites of chlorinated phenolic compounds in fish bile have been found to be sensitive biomarkers of bleachedpulp mill effluent exposure. Chlorinated syringaldehydes are largely unstudied chlorophenolics found in bleached hardwood effluent. Sand flathead (Platycephalus bassensis), Australian marine fish, were exposed to 100% chlorine dioxide-bleached eucalypt pulpeffluent at concentrations of