研究了以二苯甲酮和80%水合肼为原料，合成二苯甲酮腙的工艺，探讨了物料配比、反应时间、浓度等对目的产物收率的影响。
Synthesis process of benzophenone hydrazone is studied with benzophenone and 80%hydrazine as raw materials. Effects of material ratio, reaction time and concentration on aimed products are explored.
总维生素C、还原型维生素C含量的测定采用2，4二-硝基苯肼法。
The content of total vitamin C and reductive ascorbic acid were determined by 2,4-dinitrobenzene hydrazine.
这些加成物的结构是借在酸性介质中与2,4 -二硝基苯肼作用生成相应酮的2,4 -二硝基苯腙而得到证明。
The structure of these adducts was proved through the reaction with 2, 4-dinitrophenylhydrazine in acidic medium, yielding the 2, 4-dinitrophenyl-hydrazone of the corresponding ketone.
采用循环伏安法、示差脉冲伏安法对四种天然黄酮类化合物清除二苯代苦味肼自由基（DPPH）的能力进行了探讨。
Scavenging activity of four natural flavonoids to 2,2-diphenyl-1-picrylhydrzyl free radical(DPPH) was studied by cyclic voltammetry and differential pulse voltammetry.
本文对二苯碳酰二肼分光光度法测定地表水及工业废水中六价铬的样品预处理方法提出了改进措施。
In this paper, the preparatory treatment for determination of Cr6+ in ground water or industrial effluents by the method of spectrophotometry has been improved.
目的：针对枸杞子的抗氧化作用，尝试建立基于清除有机自由基1，1-二苯基苦基苯肼（DPPH）的枸杞子质量控制方法。
Objective: To establish a quality control method for fructus lycii based on its antioxidation scavenging 1, 1-diphenyl-2- picrylhydrazyl (DPPH).
目的：针对枸杞子的抗氧化作用，尝试建立基于清除有机自由基1，1-二苯基苦基苯肼（DPPH）的枸杞子质量控制方法。
Objective: To establish a quality control method for fructus lycii based on its antioxidation scavenging 1, 1-diphenyl-2- picrylhydrazyl (DPPH).
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