论文信息 - Autonomous microfluidic system for phosphate detection.

Autonomous microfluidic system for phosphate detection.

Miniaturization of analytical devices through the advent of microfluidics and micro total analysis systems is an important step forward for applications such as medical diagnostics and environmental monitoring. The development of field-deployable instruments requires that the entire system, including all necessary peripheral components, be miniaturized and packaged in a portable device. A sensor for long-term monitoring of phosphate levels has been developed that incorporates sampling, reagent and waste storage, detection, and wireless communication into a complete, miniaturized system. The device employs a low-power detection and communication system, so the entire instrument can operate autonomously for 7 days on a single rechargeable, 12V battery. In addition, integration of a wireless communication device allows the instrument to be controlled and results to be downloaded remotely. This autonomous system has a limit of detection of 0.3mg/L and a linear dynamic range between 0 and 20mg/L.

[1] David Styles,et al. Importance of spatial and temporal patterns for assessment of risk of diffuse nutrient emissions to surface waters , 2005 .

[2] M. DeGrandpre,et al. A submersible autonomous sensor for spectrophotometric pH measurements of natural waters. , 2003, Analytical chemistry.

[3] E. Paleologos,et al. The use of surfactant-based separation techniques for monitoring of orthophosphate in natural waters and wastewater. , 2003, The Science of the total environment.

[4] Dermot Diamond,et al. The determination of phosphorus in a microfluidic manifold demonstrating long-term reagent lifetime and chemical stability utilising a colorimetric method , 2003 .

[5] V. Smith,et al. Eutrophication: impacts of excess nutrient inputs on freshwater, marine, and terrestrial ecosystems. , 1999, Environmental pollution.

[6] I. McKelvie,et al. Rapid underway profiling of water quality in Queensland estuaries. , 2005, Marine pollution bulletin.

[7] Ildikó V. Tóth,et al. An overview on flow methods for the chemiluminescence determination of phosphorus. , 2005, Talanta.

[8] M. J. Cowling,et al. Optimising optical port size on underwater marine instruments to maximise biofouling resistance , 2003 .