This work describes the design of a phosphate analyser that utilises a microfluidic lab-on-a-chip. The analyser contains all the required chemical storage, pumping and electronic components to carry out a complete phosphate assay. The system is self-calibrating and self-cleaning, thus capable of long-term operation. This was proven by a bench top calibration of the analyser using standard solutions and also by comparing the analyser's performance to a commercially available phosphate monitor installed at a waste water treatment plant. The output of the microfluidic lab-on-a-chip analyser was shown to have sensitivity and linear range equivalent to the commercially available monitor and also the ability to operate over an extended period of time.
Validation of a fully autonomous phosphate analyser based on a microfluidic lab-on-a-chip
C. Slater, J. Cleary, K.-T. Lau, D. Snakenborg, B. Corcoran, J. P. Kutter, D. Diamond; Validation of a fully autonomous phosphate analyser based on a microfluidic lab-on-a-chip. Water Sci Technol 1 April 2010; 61 (7): 1811–1818. doi: https://doi.org/10.2166/wst.2010.069
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