Performance of electrokinetic stacking enhanced paper-based analytical device with smartphone for fast detection of fluorescent whitening agent

2017 ◽  
Vol 995 ◽  
pp. 85-90 ◽  
Author(s):  
Yi-Zhen Song ◽  
Xiu-Xiu Zhang ◽  
Biao Ma ◽  
Zhi-Yong Wu ◽  
Zi-Qiang Zhang
Keyword(s):  
Fluorescent Whitening Agent ◽  
Fast Detection ◽  
Whitening Agent ◽  
Electrokinetic Stacking ◽  
Analytical Device

Highly efficient sample stacking by enhanced field amplification on a simple paper device

Lab on a Chip ◽  
2016 ◽  
Vol 16 (18) ◽  
pp. 3460-3465 ◽  
Author(s):  
Biao Ma ◽  
Yi-Zhen Song ◽  
Ji-Cheng Niu ◽  
Zhi-Yong Wu
Keyword(s):  
Sample Stacking ◽  
Highly Efficient ◽  
Field Amplification ◽  
Paper Device ◽  
Signal Improvement ◽  
Electrokinetic Stacking ◽  
Analytical Device

Electrokinetic stacking based on field amplification was firstly introduced to a paper-based analytical device, and over 1000-fold signal improvement was achieved.

Fast and highly efficient multiplexed electrokinetic stacking on a paper-based analytical device

2021 ◽  
pp. 107041
Author(s):  
Yu-Qi Liu ◽  
Bin Ji ◽  
Xiang-Hong Yan ◽  
Shuang Lv ◽  
Fang Fang ◽  
...  
Keyword(s):  
Highly Efficient ◽  
Electrokinetic Stacking ◽  
Analytical Device

The Effect of Fluorescent Whitening Agent on the Coated Ink-Jet Printing Paper

2011 ◽  
Vol 183-185 ◽  
pp. 1692-1695
Author(s):  
Wen Hua Gao ◽  
Ke Fu Chen ◽  
Ren Dang Yang ◽  
Fei Yang ◽  
Xiao Bin Chen
Keyword(s):  
Great Influence ◽  
Chromatic Aberration ◽  
Coated Paper ◽  
Fluorescent Whitening Agent ◽  
Ink Jet Printing ◽  
Whitening Agent ◽  
Ink Jet ◽  
Color Density ◽  
Jet Printing ◽  
Printing Paper

Fluorescent whitening agent is relatively small dosage in the coating, but it has great influence on the properties of the coating and ink-jet printing qualities. With the increase of fluorescent whitening agent dosage, the PH of the coating rose but the viscosity was hardly to change. The brightness of coated ink-jet printing paper and color density of the printing image firstly presented the trend of increasing then decreasing. What’s more, when the brightness of the coated paper achieved to the maximum, color density and contact angle properties were the largest. Chromatic aberration property of the image reduced from 1.87 to 1.75, when the addition of fluorescent whitening agent rose from 0.1% to 0.5%. While the dosage was rose to 0.9%, chromatic aberration increased to 2.15. The gloss of coated paper decreased with the dosage of fluorescent whitening agent increasing. In sum, fluorescent whitening agent can enhance the brightness of the coated paper as well as the printing properties. The results show that the best brightness and printing qualities of coated ink-jet printing paper are obtained, when the fluorescent whitening agent is 0.5%( relative to pigment).

Photochemical studies of a sulphonated derivative of 1,3-Diphenyl-2-pyrazoline

1975 ◽  
Vol 28 (9) ◽  
pp. 2083 ◽  
Author(s):  
IH Leaver ◽  
GC Ramsay ◽  
LJ Stephens
Keyword(s):  
Aqueous Solution ◽  
Vinyl Alcohol ◽  
Wool Fibre ◽  
Poly Vinyl Alcohol ◽  
Simulated Sunlight ◽  
Fluorescent Whitening Agent ◽  
Whitening Agent

The photochemistry of the sulphonated pyrazoline fluorescent whitening agent sodium 4-(3?-phenyl-2?-pyrazolin-1?-yl)benzenesulphonate has been examined in aqueous solution, in films of poly(vinyl alcohol) and in the wool fibre. Photooxidation to give the pyrazole occurs almost quantitatively in solution, but accounts for only half of the photoproducts formed in the polymer. In the wool fibre, pyrazole formation accounts for more than half of the pyrazoline whitener destroyed during exposure to simulated sunlight.

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