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Featured researches published by Chen Fang.
Archive | 2018
刘圆圆; Liu Yuan-yuan; 许建新; Xu Jian-xin; 王建龙; Wang Jianlong; 陈芳; Chen Fang; 陈丽珍; Chen Lizhen; 曹端林; Cao Duanlin
为准确测定3, 4-二硝基吡唑产品的纯度, 建立了3, 4-二硝基吡唑及其合成过程中可能存在的杂质(3-硝基吡唑、1, 3-二硝基吡唑)的高效液相色谱分析方法。讨论了不同流动相体系、流动相比例、流速等条件对3, 4-二硝基吡唑高效液相色谱分离效果的影响。采用外标法进行定量分析。结果表明, 得出最优的色谱条件为: Hypersil ODS2色谱柱(250 mm×4.6 mm, 5 μm), 紫外检测波长260 nm, 流动相为乙腈/0.1%乙酸水=35:65( V/V ), 流速1.0 mL·min -1 , 柱温25 ℃, 进样量10 μL。在上述色谱条件下, 3-硝基吡唑、3, 4-二硝基吡唑和1, 3-二硝基吡唑的保留因子分别为0.41、1.20、1.52, 3-硝基吡唑和3, 4-二硝基吡唑间的分离度为9.42, 3-硝基吡唑和1, 3-二硝基吡唑间的分离度为3.16。3, 4-二硝基吡唑线性范围为5~500 mg·L -1 , 3-硝基吡唑的线性范围为5~250 mg·L -1 , 1, 3-二硝基吡唑的线性范围为5~250 mg·L -1 。在此范围内, 三种化合物的检测限分别为1.19, 0.60, 1.04 mg·L -1 , 相对标准偏差为1.39%~2.08%, 加标回收率为95.29%~103.43%。
Archive | 2013
Ma Chunyuan; Wang Junqi; Li Hongmei; Zhou Xizheng; Chen Fang; Gao Xiuli; Liu Zhenggang
Archive | 2013
Ma Chunyuan; Zhou Xizheng; Li Hongmei; Wang Junqi; Chen Fang; Liu Zhenggang; Ma Hongliang
Archive | 2013
Ma Chunyuan; Liu Zhenggang; Wang Junqi; Li Hongmei; Chen Fang; Zhou Xizheng; Li Zongqiang
Archive | 2013
Ma Chunyuan; Zhou Xizheng; Li Hongmei; Wang Junqi; Chen Fang; Song Guangfeng; Liu Zhenggang
Archive | 2013
Ma Chunyuan; Wang Junqi; Chen Fang; Liu Zhenggang; Li Hongmei; Zhou Xizheng; Wang Xiaoshao
Archive | 2013
Ma Chunyuan; Zhou Xizheng; Li Hongmei; Wang Junqi; Chen Fang; Gao Xiuli; Liu Zhenggang
Archive | 2013
Ma Chunyuan; Wang Junqi; Li Hongmei; Zhou Xizheng; Chen Fang; Gao Xiuli; Liu Zhenggang
Archive | 2014
Ma Chunyuan; Chang Jingcai; Cui Lin; Yuan Lili; Xu Chunyan; Wang Jinting; Li Lingyan; Chen Fang
Archive | 2013
Ma Chunyuan; Zhou Xizheng; Li Hongmei; Wang Junqi; Chen Fang; Liu Zhenggang; Li Lingyan