Progress in the realisation of an autonomous environmental monitoring device for ammonia

Smart Sensors, Measurement and Instrumentation

Maher

Diamond

2013

Abstract. There is an increasing demand for autonomous sensor devices which can provide reliable data on key water quality parameters at a higher temporal and geographical resolution than is achievable using current approaches to sampling and monitoring. Microfluidic technology, in combination with rapid and on-going developments in the area of wireless communications, has significant potential to address this demand due to a number of advantageous features which allow the development of compact, low-cost and low-powered analytical devices. Here we report on the development of a microfluidic platform for water quality monitoring. This system has been successfully applied to in-situ monitoring of phosphate in environmental and wastewater monitoring applications. We describe a number of the technical and practical issues encountered and addressed during these deployments and summarise the current status of the technology.

Section: Reagent Stabilitymentioning

confidence: 99%

Development and Deployment of a Microfluidic Platform for Water Quality Monitoring

Smart Sensors, Measurement and Instrumentation

Maher

Diamond

2013

“…Our work on the development autonomous nutrient analyser platforms for phosphate and ammonia began over ten years ago [1,2]. This laid the foundations for the development of the more recent autonomous field deployable nutrient analyser platforms.…”

Section: A Nutrient Analyser Platformmentioning

confidence: 99%

Autonomous analyser platforms for remote monitoring of water quality

Diamond

IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society

Maher

et al. 2011

Self Cite

Abstract-This paper describes progress in the realization of reliable, relatively low-cost autonomous microfluidic analysers that are capable of monitoring the chemistry of water bodies for significant periods of time (weeks, months) without human intervention. The data generated is transmitted wireless to a remote web server and transferred to a web-database that renders data access location independent. Preliminary results obtained from a 'matchbox' scale analyzer are also presented and routes to the realization of next generation platforms discussed.

“…Further study also determined that the reagent had no significant degradation over a period of one year (Bowden et al 2002a,b;Bowden & Diamond 2003). Other researchers have demonstrated bench top systems in conjunction with LOCs to measure nitrate and ammonia, opening the possibility of creating an integrated system that measures multiple parameters (Greenway et al 1999;Sequeira & Diamond 2002).…”

Section: Introductionmentioning

confidence: 99%

Validation of a fully autonomous phosphate analyser based on a microfluidic lab-on-a-chip

Slater

Water Science and Technology

Lau

et al. 2010

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.