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什么是荧光增白剂


网址:http://www.scvc8.com  时间:2018-11-22 13:35:58

什么是荧光增白剂
What is a fluorescent whitening agent
一、 什么是荧光增白剂?
1. What is a fluorescent whitening agent?
荧光增白剂的发现和工业化已有七十多年的历史,比较早应用于纺织职业,后拓展到洗涤剂、造纸、涂料、塑料、皮革等职业,现在一些高科技领域也在运用荧光增白剂,如荧光勘探、防伪印刷、高空摄影用的高感光度胶片等等。
The discovery and industrialization of fluorescent whitening agent has a history of more than 70 years. It was first used in textile industry, then in detergent, paper-making, paint, plastics, leather and other professions. Now some high-tech fields are also using fluorescent whitening agent, such as fluorescent exploration, anti-counterfeiting printing, high-sensitivity film for aerial photography and so on.
荧光增白剂是能宣布荧光,且具有“增白”作用的一大类物质的统称,涵盖了很多的化合物。据有关材料显现,世界上荧光增白剂的产品商标有近2500个,分属15个基本结构类型。我国研讨开发的不同结构的荧光增白剂有40多个。
Fluorescent whitening agent is a general term for a large group of substances that can announce fluorescence and have "whitening" effect, covering many compounds. According to the relevant materials, there are nearly 2500 trademarks of fluorescent brighteners in the world, which belong to 15 basic structural types. More than 40 fluorescent whiteners with different structures have been developed in China.
荧光增白剂经过光学上的补色作用起到“增白”作用。 “增白”作用是经过物理的光学现象而发生的,而非化学或生物反应。
The fluorescent whitening agent plays a "whitening" role through optical complementary effect. "Whitening" occurs through physical optical phenomena rather than chemical or biological reactions.
二、 荧光现象
Two. Fluorescence phenomenon
荧光是一种冷发光的物理现象,可以宣布荧光的物质在自然界中广泛存在,多种动物体如虾、蟹、水母等海洋生物,许多食物如酱油、普洱茶、白酒和咖啡等,在紫外灯的照耀下都可以发生荧光现象。人们日常吸收的作为养分及保持生命所有必要的物质,如维生素A、B2、B12,蛋白质,色氨酸、酪氨酸等等,也都能发生荧光现象。
Fluorescence is a physical phenomenon of cold luminescence. It can be declared that fluorescent substances exist widely in nature. Many kinds of animals, such as shrimp, crab, jellyfish and other marine organisms, and many foods, such as soy sauce, Pu'er tea, liquor and coffee, can fluorescence under the illumination of ultraviolet lamp. As nutrients and all necessary substances to maintain life, such as vitamin A, B2, B12, protein, tryptophan, tyrosine and so on, fluorescence can also occur.
荧光增白剂厂家
紫外灯下咖啡、普洱茶、白酒、酱油均表现出必定强度的荧光经过特定的紫外光源照耀,可以判别试样是否能发生荧光现象,但是如果要检测试样是否含有荧光增白剂、含有哪种荧光增白剂、含量是多少,则要杂乱得多,对试样处理、试验条件和环境、检测仪器和试验操作等都有更高和更严厉的要求。
Under the ultraviolet lamp, the fluorescence of coffee, Pu'er tea, liquor and soy sauce shows certain intensity, which can be used to judge whether the sample can fluoresce or not, but if the sample contains fluorescent whitening agent, which kind of fluorescent whitening agent and the content of the sample are to be detected, it will be much more confusing. Sample treatment, test conditions and environment, test instruments and test operation have higher and stricter requirements.
三、荧光增白剂的检测
3. Detection of Fluorescent Whitener
作为荧光增白剂的化合物,除了可以发生荧光外,还应当具有更多条件,如:化合物本身挨近无色(一般略带黄色),宣布的荧光具有必定强度和必定的波长范围(400~500 nm的可见荧光),对产品基质的杰出的分散性等等。
As a fluorescent whitening agent, compounds should have more conditions besides fluorescence, such as: the compound itself is close to colorless (generally slightly yellow), declared fluorescence has a certain intensity and wavelength range (400-500 nm visible fluorescence), excellent dispersion of product matrix and so on.
目前国内外短少专门针对化妆品中荧光增白剂的检测办法,现有国家、职业标准中触及食物包装、纸制品、食物用洗涤剂中荧光增白剂的检测办法是否适用于成分杂乱的化妆品,还有待办法学验证。
At present, the detection methods of fluorescent whitening agents in cosmetics at home and abroad are very few. Whether the detection methods of fluorescent whitening agents in food packaging, paper products and food detergents in existing national and professional standards are suitable for cosmetics with disorderly ingredients remains to be verified by methodologies.
简言之,荧光增白剂都可宣布荧光,但不是所有可以宣布荧光的物质都是荧光增白剂。
In short, fluorescent whiteners can announce fluorescence, but not all substances that can announce fluorescence are fluorescent whiteners.
综上所述有山东吉凌化工178彩票注册提供,想了解更多荧光增白剂厂家知识,欢迎关注我们的网站:http://www.scvc8.com谢谢支持!
In summary, all the above-mentioned Shandong Jiling Chemical Co., Ltd. provide, want to know more about fluorescent whitening agent manufacturers, welcome to pay attention to our website: http://www.scvc8.com Thank you for your support!

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