Monitoring synthesis systems of acetylsalicylic acid with citric acid as the catalyst by second derivative spectrometry
Shao Jianqun, Xu Yanxia, Tang Jingcheng, He Shenzhi, Zhang Feng
Journal of Capital Medical University . 2015, (5): 757 -760 .  DOI: 10.3969/j.issn.1006-7795.2015.05.018