A New Paper-Based Microfluidic Device for Improved Detection of Nitrate in Water.
A New Paper-Based Microfluidic Device for Improved Detection of Nitrate in Water.
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DOI：
10.3390/s21010102
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发表时间：
2020-12-26
期刊：
影响因子：
--
通讯作者：
Faghri M
中科院分区：
文献类型：
--
作者：
Charbaji A;Heidari-Bafroui H;Anagnostopoulos C;Faghri M
本文报道了一种简单、廉价的纸基微流控装置，用于水中硝酸盐的检测。该装置结合了两项适用于硝酸盐检测的纸基技术的最新发展，并具有优化的微流体设计。采用的第一个技术进步是一种创新的纤维复合材料，由棉纤维和锌微粒组成，可以纳入纸基设备，并导致更好的硝酸盐还原。第二个是带有固定试剂的检测区，该试剂允许通过更大的样品量。对不同的酸进行了测试——柠檬酸和磷酸的结果比盐酸好，因为盐酸完全蒸发而不会在纸上留下任何残留物。研究了利用各种流体控制技术的不同微流控设计，选择并优化了具有折叠检测区的设计，以提高所产生信号的均匀性。经过优化设计，该装置对水中硝酸盐的检测限和定量限分别为0.53 ppm和1.18 ppm。这比以前使用纸质技术检测水中硝酸盐的方法提高了40%以上。
In this paper, we report a simple and inexpensive paper-based microfluidic device for detecting nitrate in water. This device incorporates two recent developments in paper-based technology suitable for nitrate detection and has an optimized microfluidic design. The first technical advancement employed is an innovative fibrous composite material made up of cotton fibers and zinc microparticles that can be incorporated in paper-based devices and results in better nitrate reduction. The second is a detection zone with an immobilized reagent that allows the passage of a larger sample volume. Different acids were tested—citric and phosphoric acids gave better results than hydrochloric acid since this acid evaporates completely without leaving any residue behind on paper. Different microfluidic designs that utilize various fluid control technologies were investigated and a design with a folding detection zone was chosen and optimized to improve the uniformity of the signal produced. The optimized design allowed the device to achieve a limit of detection and quantification of 0.53 ppm and 1.18 ppm, respectively, for nitrate in water. This accounted for more than a 40% improvement on what has been previously realized for the detection of nitrate in water using paper-based technology.
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DOI：
10.3390/s17102345
发表时间：
2017-10-14
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Khanfar MF;Al-Faqheri W;Al-Halhouli A
通讯作者：
Al-Halhouli A
影响因子：
6.2
作者：
Bhakta SA;Borba R;Taba M Jr;Garcia CD;Carrilho E
通讯作者：
Carrilho E
DOI：
10.1016/j.jestch.2020.09.005
发表时间：
2021-03-03
影响因子：
5.7
作者：
Charbaji, Amer;Smith, Winfield;Faghri, Mohammad
通讯作者：
Faghri, Mohammad
影响因子：
5.6
作者：
Heidari-Bafroui, Hojat;Ribeiro, Brenno;Faghri, Mohammad
通讯作者：
Faghri, Mohammad
影响因子：
1.6
作者：
Jaikang, Pheeraya;Wangkarn, Sununta;Grudpan, Kate
通讯作者：
Grudpan, Kate