Characterization and Study on Fragmentation Pathways of a Novel Nerve Agent, ‘Novichok (A234)’, in Aqueous Solution by Liquid Chromatography–Tandem Mass Spectrometry
作者:Jin Young Lee、Kyoung Chan Lim、Hyun Suk Kim
DOI:10.3390/molecules26041059
日期:——
acetic acid and 0.01 M potassium carbonate, respectively. The analysis of the fragmentation patterns and degradation pathways of A234 showed that the same degradation products were formed at all pH levels. However, the hydrolysis rate of A234 was fastest under acidic conditions. In all three conditions, the fragmentation pattern and the major degradation product of A234 were determined. This information
作为研究Novichok(1-(二乙基氨基)亚乙基)氟酰胺基氟酸酯(A234)性能的第一步,我们通过液相色谱-串联质谱法研究了其降解产物和在不同pH值下在水溶液中的破碎途径。A234是在我们的实验室中合成的,并通过核磁共振波谱进行了表征。在不同的pH值下制备了三套水性样品。在乙腈中以1 mg / mL的浓度制备A234储备液,并保存在-20°C直至使用。通过用去离子水稀释储备溶液来制备水溶液样品(0.1 mg / mL)。分别使用0.01 M乙酸和0.01 M碳酸钾制备酸性含水样品(pH = 3.5)和碱性含水样品(pH = 9.4)。对A234的片段化模式和降解途径的分析表明,在所有pH值下均会形成相同的降解产物。但是,A234的水解速度在酸性条件下最快。在所有三个条件下,均确定了A234的碎裂模式和主要降解产物。该信息将适用于有关Novichok的去污及其在各种环境基质中降解产物的痕量分析的研究。