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荧光增白剂检测的5种办法


网址:http://www.scvc8.com  时间:2018-11-21 10:48:48

荧光增白剂检测的5种办法
5 ways to detect fluorescent whitening agents
荧光增白剂产品的质量只靠肉眼很难区分,又由于不同批次的产品在颜色上总有些差异,所以仅仅从颜色上并不能断定产质量量上下,仅仅靠颜色的来判纯粹的荧光增白剂并非正确。
It is difficult to distinguish the quality of fluorescent whitening agent products only by naked eyes, and because there are always some differences in color between different batches of products, it is not correct to judge the quality of fluorescent whitening agent only by color.
1.紫外灯法
1. ultraviolet lamp method
荧光增白剂的原理是紫外光激起出的蓝光中和黄光,从而使物体收回的光愈加亮堂,所以就可以采用紫外灯间接照射来确定能否含有荧光增白剂。淘宝上就有卖这种手电筒的,可以照射物体来判别能否含有荧光增白剂。
The principle of fluorescent whitening agent is to neutralize the blue and yellow light caused by ultraviolet light, so that the light recovered from the object becomes brighter. Therefore, the indirect irradiation of ultraviolet lamp can be used to determine whether the fluorescent whitening agent can be contained. On Taobao, there is a flashlight that can be irradiated to determine whether fluorescent brighteners can be used.
紫外灯法只能测定有无成绩,不能确定含量成绩。
Ultraviolet lamp method can only determine whether there are achievements or not.
2.紫外分光光度法
2. UV Spectrophotometry
不同的荧光增白剂选取不同的溶剂,由于荧光增白剂有吸收紫外光的才能,所以经过测定其吸收的光量,同规范曲线比拟确定荧光增白剂的含量。这也是国标中测定办法。
Different fluorescent whitening agents choose different solvents. Because fluorescent whitening agents have the ability to absorb ultraviolet light, the content of fluorescent whitening agents is determined by measuring the amount of light they absorb and comparing with the standard curve. This is also the way to determine the GB.
紫外分光光度法能确定量的成绩,但是无法确定详细是哪种荧光增白剂,此办法设备比拟廉价,操作复杂是普通企业所采用的方式,只需晓得所推销或许消费的荧光增白剂详细型号,那麼就可以确定荧光增白剂的量,也就晓得了此批次荧光增白剂的纯度。
Ultraviolet spectrophotometry can determine the results of the quantity, but it is impossible to determine which kind of fluorescent whitening agent is in detail. This method is used by ordinary enterprises because of its cheap equipment and complex operation. Only knowing the detailed model of the fluorescent whitening agent sold or consumed can we determine the quantity of the fluorescent whitening agent. The purity of this batch of fluorescent whitening agents was determined.
荧光增白剂厂家
3.分子荧光分光光度法
3. molecular fluorescence spectrophotometry
测量物质反射的光强和波长来确定含有的荧光增白剂的型号和剂量,此办法可以确定所含荧光增白剂的量和型号。
The type and dosage of the fluorescent brightener can be determined by measuring the reflected light intensity and wavelength of the substance. The amount and type of the fluorescent brightener can be determined by this method.
这种办法需求对荧光增白剂停止别离,即需求将荧光增白剂从产品上别离下停止测定,关于检测原资料所运用的荧光增白剂品种是比拟好的一种办法。
This method needs to stop separating the fluorescent whitening agent, that is, to separate the fluorescent whitening agent from the product and stop the determination. It is a good method to detect the variety of fluorescent whitening agent used in the original data.
4.液相色谱法
4. high performance liquid chromatography
液相色谱法经过将进样溶液经色谱别离后,应用紫外检测器或荧光检测器,依据保存工夫和色谱峰面积停止定量测定。液相色谱法能对特定的荧光增白剂停止精确定量,但该法检测本钱较高,且依据化合物的保存工夫和光谱定性易受杂质搅扰,因而对不同品种荧光增白剂的定性断定有一定局限性。
After the sample solution was separated by liquid chromatography, the quantitative determination was stopped by using ultraviolet detector or fluorescence detector according to the preservation time and peak area. High performance liquid chromatography can stop the accurate quantification of specific fluorescent whitening agents, but the cost of detection is high, and the qualitative determination of compounds is easily disturbed by impurities according to their preservation time and spectrum, so the qualitative determination of different kinds of fluorescent whitening agents has certain limitations.
5.液相色谱-质谱联用法
5. high performance liquid chromatography-mass spectrometry
液相色谱与质谱联用法能完成荧光增白剂的良好别离和精确测定,其采用保存工夫与特征离子比照例对已知目的物停止定性和定量剖析,因而精确性和灵敏度更高,但因其仪器设备本钱较高,不利于企业消费的检测和监控,在实践使用上有一定局限性。
High performance liquid chromatography-mass spectrometry (LC-MS) can complete the good separation and accurate determination of fluorescent whitening agents. It uses preservation time and characteristic ions to stop the qualitative and quantitative analysis of known objects, so it has higher accuracy and sensitivity. However, because of its high cost of instruments and equipment, it is not conducive to the detection and monitoring of enterprise consumption. There are certain limitations in practice.
本文由山东吉凌化工178彩票注册http://www.scvc8.com整理,我们将为您提供荧光增白剂厂家新闻知识,有兴趣的朋友可以关注我们,谢谢!!
This article is organized by Shandong Jiling Chemical Co., Ltd. http://www.scvc8.com. We will provide you with the latest fluorescent whitening agent news knowledge. Interested friends can pay attention to us, thank you!

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