Beckner D, Roth N, Yolton R L
College of Optometry, Pacific University, Forest Grove, OR 97116.
J Am Optom Assoc. 1993 May;64(5):359-67.
Fluorescent whitening agents (FWAs) are chemicals added to most fabrics and papers during manufacture to increase color temperature, "whiteness," and "brightness." FWAs accomplish this by absorbing energy in the ultraviolet (UV) part of the spectrum and emitting it as visible blue light. Recently, hunters have become concerned that FWA could be reducing the effectiveness of their camouflage clothing. As a result, some manufacturers have begun making their camouflage clothing (camo) without FWA, and a spray-on product has been introduced to block the action of FWA. Radiometric spectra from camo and foliage samples suggest, however, that these concerns might not be fully justified. Under full sun and in the shade, spectra from 300 to 500 nanometers (nm) (i.e., UV and visible blue light) showed that camo samples containing FWA matched the foliage reasonably well. No evidence of a major problem caused by the FWA was detected, and no significant need for the use of UV absorbing dyes to block the action of FWA was found.
荧光增白剂（FWAs）是在大多数织物和纸张制造过程中添加的化学物质，用于提高色温、“白度”和“亮度”。荧光增白剂通过吸收光谱中紫外线（UV）部分的能量并将其发射为可见蓝光来实现这一点。最近，猎人开始担心荧光增白剂可能会降低他们的迷彩服的效果。因此，一些制造商已开始生产不含荧光增白剂的迷彩服，并且已推出一种喷雾产品来阻止荧光增白剂的作用。然而，来自迷彩服和树叶样本的辐射光谱表明，这些担忧可能并不完全合理。在全日照和阴凉处，300至500纳米（nm）（即紫外线和可见蓝光）的光谱显示，含有荧光增白剂的迷彩服样本与树叶的匹配度相当好。未检测到由荧光增白剂引起的重大问题的证据，也未发现有显著必要使用紫外线吸收染料来阻止荧光增白剂的作用。
