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1)  oxidation-photochemistry derivatization
氧化-光化学衍生
2)  photochemical derivatization
光化学衍生
1.
In this study, aflatoxins in food and feed were determined by HPLC with post-column photochemical derivatization, and the effects of photochemical derivatization on aflatoxin fluorescence were investigated.
本文采用光化学衍生法结合HPLC测定了食品和饲料中的黄曲霉毒素,研究了光化学衍生的效果。
2.
Aflatoxins were extracted from fermented maize meal with methanol-water(80∶20,V∶V),which were then purified by immunoaffinity column(IAC) and determined by reverse-phase liquid chromatography with on-line post-column photochemical derivatization and fluorescence detection.
发酵玉米粉用甲醇∶水(80∶20,V∶V)提取黄曲霉毒素(AFT),经免疫亲合柱(IAC)分离纯化、在线光化学衍生器柱后衍生化后,反相高效液相色谱(HPLC)荧光检测器测定AFT(B1、B2、G1、G2)含量。
3)  Post-column photochemical derivatization
柱后光化学衍生
4)  chemical derivatization
化学衍生
1.
The fragmentation pathway of raddeanin A was studied by electrospray ionization mass spectrometry(ESI-MS/MS) together with chemical derivatization.
以化学衍生结合电喷雾电离质谱(ESI-MS/MS)法研究银莲花素A的质谱裂解方式。
5)  Chemical derivatization
化学衍生化
6)  fluorescence derivatization
荧光衍生化
1.
The fluorescence derivatization for alcohols and acids in high performance liquid chromatography can increase detective sensitivity, and improve separation.
高效液相色谱荧光衍生化醇和酸能提高检测灵敏度 ,改善分离效果 。
2.
In the experimental study,4-amino-3-penten-2-one(Fluoral-P) and formaldehyde chemically interacted in a 3D circular microfluidic mixer while the absorption and fluorescence intensity(of formaldehyde) were confirmed via rapid detection of fluorescence derivatization.
本研究利用微流体芯片配合雷射激发荧光侦测法,侦测食品中不当添加物-甲醛,实验中以4-amino-3-penten-2-one(Fluoral-P)和甲醛作用,并于微流体混合器中进行反应及荧光衍生化以快速侦测。
补充资料:光化学氧化剂
分子式:
CAS号:

性质:又称光氧化剂(photo-oxidant)或总氧化剂(total oxidant)。大气中除氧外,具有氧化性质的全部污染物之总称。通常指能将碘化钾氧化为碘的物质,主要是大气中光化学反应的产物。如臭氧、二氧化氮、过氧乙酰硝酸酯(PAN)、过氧化氢和过氧自由基(如过氧烷基RO2)等。由于一般情况下,臭氧占光化学氧化剂总量的90%以上,故常以臭氧的浓度作为总氧化剂的含量。世界卫生组织及美国、日本和我国等许多国家都把光化学氧化剂浓度作为衡量大气环境质量的标准之一。

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