A 3D-Printed, Portable, Optical-Sensing Platform for Smartphones Capable of Detecting the Herbicide 2,4-Dichlorophenoxyacetic Acid

Journal Article · Mon Aug 14 04:00:00 EDT 2017 · Analytical Chemistry

DOI:https://doi.org/10.1021/acs.analchem.7b02139· OSTI ID:1393754

Wang, Yijia ^[1]; Zeinhom, Mohamed M. A. ^[2]; Yang, Mingming ^[3]; Sun, Rongrong ^[3]; Wang, Shengfu ^[4]; Smith, Jordan N. ^[5]; Timchalk, Charles ^[5]; Li, Lei ^[3]; Lin, Yuehe ^[3]; Du, Dan ^[3]

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1. School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States; College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
2. School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States; Food Hygiene Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62512, Egypt
3. School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
4. College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
5. Health Impacts &, Exposure Science, Pacific Northwest National Laboratory, Richland, Washington 99352, United States

Onsite rapid detection of herbicide and herbicide residuals in environmental and biological specimens is important for agriculture, environment, food safety, and health care. Traditional method for herbicide detection requires expensive laboratory equipment and a long turn-round time. In this work, we developed a single-stripe microliter plate smartphone colorimetric device for rapid and low-cost in-field test. This portable smartphone platform is capable of screening 8 samples in a microplate single-stripe. The device combined the advantages of small size (50×100×160 mm3) and low cost ($10). The platform was calibrated by using two different dye solutions, i.e. methyl blue (MB) and Rhodamine B, for green and red channels. The results showed good correlation with results attained from a traditional laboratory reader. We demonstrated the application of this platform for an herbicide, 2,4-Dichlorophenoxyacetic acid detection in the range of 1 ppb to 80 ppb. Spiked samples of tap water, rat serum, plasma and human serum were tested by our device. Recoveries obtained varied from 95.6% to 105.2% for all spiked samples using the microplate reader and from 93.7% to 106.9% using the smartphone device. This work validated that the smartphone optical sensing platform is comparable to the commercial microplate reader, it is eligible for onsite rapid and low-cost detection of herbicide for environmental evaluation and biological monitoring.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1393754
• Report Number(s): PNNL-SA-129156; 453040220
• Journal Information: Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 17 Vol. 89; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English