Determination of phosphorus in water and chemical fertilizer samples using a simple drawing microfluidic paper-based analytical device
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Issued Date
2022-10-01
Resource Type
ISSN
09106340
eISSN
13482246
Scopus ID
2-s2.0-85134770234
Pubmed ID
35876988
Journal Title
Analytical Sciences
Volume
38
Issue
10
Start Page
1323
End Page
1332
Rights Holder(s)
SCOPUS
Bibliographic Citation
Analytical Sciences Vol.38 No.10 (2022) , 1323-1332
Suggested Citation
Phansi P., Janthama S., Cerdà V., Nacapricha D. Determination of phosphorus in water and chemical fertilizer samples using a simple drawing microfluidic paper-based analytical device. Analytical Sciences Vol.38 No.10 (2022) , 1323-1332. 1332. doi:10.1007/s44211-022-00162-y Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/84157
Title
Determination of phosphorus in water and chemical fertilizer samples using a simple drawing microfluidic paper-based analytical device
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
A simple one-step drawing for the cost-effective fabrication of microfluidic paper-based analytical devices (µPADs) for the determination of phosphate content in water and fertilizer samples is presented in this paper. The hydrophobic barrier of µPAD was patterned using a 2-mm tip marker pen using a transparent acrylic sheet template. The molybdenum blue reaction using ascorbic acid as a reducing agent was used. A pre-concentration step of samples is proposed to improve the sensitivity of the measurement. The blue complex produced on the µPADs was recorded using a smartphone camera. The color intensities (red, green, blue and gray) were analyzed using ImageJ program. The proposed µPAD method provides a linear calibration range from 0 to 100 mg L−1 P. The limit of detection (LOD) was found to be 0.7 mg L−1 P with a precision of 3.1%RSD for 50 mg L−1 P (n = 10). The proposed method was successfully applied to the determination of phosphorus contents in water and liquid chemical fertilizer samples. The results obtained from µPAD agreed with a spectrophotometric method using paired t test at a 95% confidence level. Graphical abstract: [Figure not available: see fulltext.].