The determination and identification method for the thiabendazole（TBZ）, 5-OH thiabendazole(5-OH TBZ) and 2-Aminosulfone albendazole(2-Aminosulfone ALB) residues in chicken meat by HPLC/ESI/MS/MS was repored. The qua...The determination and identification method for the thiabendazole（TBZ）, 5-OH thiabendazole(5-OH TBZ) and 2-Aminosulfone albendazole(2-Aminosulfone ALB) residues in chicken meat by HPLC/ESI/MS/MS was repored. The qualitative results are presented by the daughter ions from molecular ions [M+H]﹢ of each target compound. The detective limit of the method is 0.01mg/kg for TBZ and 5-OH TBZ, 0.02mg/kg for 2-Aminosulfone ALB. The average recoverary is from 83% to 104% (n=10, the concentration of each compound is 0.02mg/kg to 1.0mg/kg).展开更多
Soyasaponins were physiologically active components existed in high concentration in soy germs. Soyasaponins were isolated from soy germs with preparative HPLC method. Their structures were confirmed with characterist...Soyasaponins were physiologically active components existed in high concentration in soy germs. Soyasaponins were isolated from soy germs with preparative HPLC method. Their structures were confirmed with characteristic reaction and ESI/MS as soyasaponin A1 S4 Ba Bb. and ESI/MS was found to be highly sensitive and accurate for the structural analysis of saponins.展开更多
The full scan ESI/MS and ESI/MS2 of N-(O, O-diisopropyl) phosphoryl aromatic amino acids (DIPPAAAs), N-(O, O-diisopropyl) phosphoryl phenylalanine, N-(O, O-diisopropyl) phosphoryl tryptophan and N-(O, O-diisopropyl) p...The full scan ESI/MS and ESI/MS2 of N-(O, O-diisopropyl) phosphoryl aromatic amino acids (DIPPAAAs), N-(O, O-diisopropyl) phosphoryl phenylalanine, N-(O, O-diisopropyl) phosphoryl tryptophan and N-(O, O-diisopropyl) phosphoryl tyrosine, were obtained. The specific ions for them were found. Their stability in the LC mobile phase was investigated using developed HPLC/UV/ESI/MS and the results demonstrated that the DIPPAAAs were stable in the mobile phase (5 mmol/L NH4Ac-MeCN (80:20,v/v, pH7.5) within 48 h.展开更多
文摘The determination and identification method for the thiabendazole（TBZ）, 5-OH thiabendazole(5-OH TBZ) and 2-Aminosulfone albendazole(2-Aminosulfone ALB) residues in chicken meat by HPLC/ESI/MS/MS was repored. The qualitative results are presented by the daughter ions from molecular ions [M+H]﹢ of each target compound. The detective limit of the method is 0.01mg/kg for TBZ and 5-OH TBZ, 0.02mg/kg for 2-Aminosulfone ALB. The average recoverary is from 83% to 104% (n=10, the concentration of each compound is 0.02mg/kg to 1.0mg/kg).
文摘Soyasaponins were physiologically active components existed in high concentration in soy germs. Soyasaponins were isolated from soy germs with preparative HPLC method. Their structures were confirmed with characteristic reaction and ESI/MS as soyasaponin A1 S4 Ba Bb. and ESI/MS was found to be highly sensitive and accurate for the structural analysis of saponins.
文摘The full scan ESI/MS and ESI/MS2 of N-(O, O-diisopropyl) phosphoryl aromatic amino acids (DIPPAAAs), N-(O, O-diisopropyl) phosphoryl phenylalanine, N-(O, O-diisopropyl) phosphoryl tryptophan and N-(O, O-diisopropyl) phosphoryl tyrosine, were obtained. The specific ions for them were found. Their stability in the LC mobile phase was investigated using developed HPLC/UV/ESI/MS and the results demonstrated that the DIPPAAAs were stable in the mobile phase (5 mmol/L NH4Ac-MeCN (80:20,v/v, pH7.5) within 48 h.
