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Point-of-need detection of microcystin-LR using a smartphone-controlled electrochemical analyzer.
- Source :
-
Sensors & Actuators B: Chemical . Sep2019, Vol. 294, p132-140. 9p. - Publication Year :
- 2019
-
Abstract
- • A portable and wireless point-of-need detection system for microcystin-LR (MC-LR) quantitation was developed and validated. • The detection system consisted of three main parts: screen printed carbon electrodes (SPCEs), smartphone-controlled electrochemical analyzer (SCEA), and Android's smartphone. • A spatiotemporal mapping of MC-LR field detection was conducted to further validate the feasibility of the SCEA for on-site screening. The development of rapid and in situ detection method for microcystin-LR (MC-LR) with portable, reliable, and easy to use devices are highly demanded, but it is still deficient. In this study, a portable and wireless point-of-need detection system for microcystin-LR (MC-LR) quantitation was developed and validated. The whole system consisted of three main parts: screen printed carbon electrodes (SPCEs), smartphone-controlled electrochemical analyzer (SCEA), and Android's smartphone. The SCEA was a homemade ARM STM32 microcontroller-based electrochemical analyzer, which have similar performance compared with a commercially available electrochemical workstation. A smartphone installed with a user-friendly application was employed to control the analyzer, receive and analyze data, and display detection results in real-time. This system can accurately quantitate MC-LR in the range of 0.001–100 μg/L with a detection limit of 0.00011 μg/L, and the results were consistent with LC–MS/MS. In addition, a preliminary MC-LR contamination map was generated using this smartphone-based platform by measuring water samples at 6 reservoirs located in Pearl River Delta (Guangdong Province, China). The cost-effective, reliable and easy-to-use smartphone-based detection system reported here can facilitate active toxicant screening to guarantee the safety of the drinking water, particularly in resource-limited area. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 294
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 136690739
- Full Text :
- https://doi.org/10.1016/j.snb.2019.05.028