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荧光增白剂有什麼危害?


网址:http://www.scvc8.com  时间:2018-12-14 11:39:58

荧光增白剂有什麼危害?
What are the hazards of fluorescent whitening agents?
通常状况下,分子中电子排布在n轨道以下的轨道上,这种形态称基态。分子吸收光子后,基态的一个电子被激起到反键分子轨道(电子激起态),称爲电子跃迁。分子中相邻的电子能级的能量差约爲1~20eV,这样的能量与紫外线和可见光的能量相当。因而,发生电子跃迁的必要条件是物质必需承受紫外光或可见光的照射,只要当照射光的能量与价电子的跃迁能相等时,光才干被吸收。荧光增白剂有许多不同的品种,有合适染棉麻的,有合适染化纤的,有合适染羊毛蚕丝的等等。这也招致了不同的荧光增白剂有不同的性质。
Usually, the electrons in the molecule are arranged in the orbit below the n orbital, which is called the ground state. When a molecule absorbs photons, an electron in the ground state is stimulated to an antibonding molecular orbital, which is called an electron transition. The energy difference between the adjacent electron levels in the molecule is about 1 to 20 eV, which is equivalent to the energy of ultraviolet and visible light. Therefore, the necessary condition for electron transition is that matter must be exposed to ultraviolet or visible light, so long as the energy of irradiated light is equal to the transition energy of valent electrons, light can be absorbed. There are many different kinds of fluorescent brighteners, such as suitable dyeing cotton and linen, chemical fibers, wool and silk, etc. This also leads to different properties of fluorescent whiteners.
荧光增白剂厂家
荧光增白剂对人体安康影响:
The effect of fluorescent whitening agent on human health:
绝大少数荧光增白剂毒性随其化学构造而异大少数荧光增白剂是无毒的或绝对无毒的。用于分解洗濯剂的荧光增白剂是无毒或实践无毒的,不会给人类安康形成风险,更不会引发肿瘤(良性,恶性)。一般化合物(晚期洗濯剂中常用的吡唑啉类荧光增白剂)会惹起过敏景象,但已淘汰。
The toxicity of most fluorescent whiteners varies with their chemical structure. A few fluorescent whiteners are non-toxic or absolutely non-toxic. Fluorescent whitening agents used to decompose detergents are non-toxic or non-toxic in practice. They do not pose risks to human health, nor do they cause tumors (benign and malignant). General compounds (pyrazoline fluorescent whitening agents commonly used in late-stage detergents) can cause allergic phenomena, but have been eliminated.
各国洗濯剂中含有0.02%~0.5%的荧光增白剂,我国目前的添加量也不高于此程度,洗濯废液中的荧光增白剂含量大约5ppm~10ppm,远低于任何毒性实验程度
There are 0.02%~0.5% fluorescent whitening agents in various countries. At present, the dosage of fluorescent whitening agents in China is not higher than that. The content of fluorescent whitening agents in waste water is about 5 ppm~10 ppm, which is much lower than that of any toxicity test.
荧光增白可吸附在动物根部而不会透入其根茎,叶,花和果实中,这标明荧光增白剂对农作物有很高的平安性。
Fluorescent whitening can be adsorbed on the roots of animals without penetrating into their rhizomes, leaves, flowers and fruits, which indicates that fluorescent whitening agent has high safety for crops.
环境中的荧光增白剂可光分解(降解)和活性污泥吸附降解,加氯化消毒安装也有较好的处置效果,不会对人类和水生物形成安康影响。
Fluorescent brighteners in the environment can be photolysed (degraded) and activated sludge adsorption degradation, chlorination disinfection installation also has a good disposal effect, will not affect human and aquatic organisms to form health.
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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