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Construction of Microfluidic Paper-based Analytical Device Base Paper and Optimization of Color Signal Uniformity
Received:February 02, 2023  
DOI：10.11980/j.issn.0254-508X.2023.05.018
Key Words:microfluidic paper-based analytical devices  paper  colorimetric detection  color uniformity
Author NameAffiliationPostcode
LI Qiongyang* State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 510640
ZHANG Xue State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640
China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
Zhuangli Printing Company， Shantou， Guangdong Province， 515041 		515041
CHEN Yiyu State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 510640
WAN Xiaofang State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 510640
TIAN Junfei State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 510640
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Abstract:In order to improve the uniformity of paper-based colorimetric signals， bleached kraft pine wood pulp was subjected to PFI refining treatment to prepare lab handsheets. Compared with the filter paper commonly used to construct paper-based chips， the handsheets prepared in this study showed good color uniformity. In the colorimetric detection of Fe2+， the analytical response of the paper-based chip had a good linear correlation in the range of 1~75 mg/L， R2=0.9599， and the detection limit was 0.4 mg/L. It had been successfully applied to the （semi）quantitative detection of Fe2+ in actual water samples.
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