Articles | Volume 22, issue 11
Research article
30 Oct 2018
Research article |  | 30 Oct 2018

A small-volume multiplexed pumping system for automated, high-frequency water chemistry measurements in volume-limited applications

Bryan M. Maxwell, François Birgand, Brad Smith, and Kyle Aveni-Deforge

Related subject area

Subject: Biogeochemical processes | Techniques and Approaches: Instruments and observation techniques
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Cited articles

Addy, K., Gold, A., Christianson, L., David, M., Schipper, L., and Ratigan, N.: Denitrifying bioreactors for nitrate removal: A meta-analysis, J. Environ. Qual., 45, 873–871, 2016.
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Birgand, F., Aveni-Deforge, K., Smith, B., Maxwell, B., Horstman, M., Gerling, A. B., and Carey, C. C.: First report of a novel multiplexer pumping system coupled to a water quality probe to collect high temporal frequency in situ water chemistry measurements at multiple sites, Limnol. Oceanogr.-Meth., 14, 767–783, 2016.
Cameron, S. G. and Schipper, L. A.: Evaluation of passive solar heating and alternative flow regimes on nitrate removal in denitrification beds, Ecol. Eng., 37, 1195–1204, 2011.
Short summary
A multiplexed pumping system (MPS) for obtaining continuous water quality data at multiple locations was previously reported. The existing design was not practical for sampling water in volume-limited applications such as small mesocosms or porewater sampling. This paper discusses the design and performance of a small-volume MPS and illustrates two applications, showing spatial variability in replicate in situ mesocosms and short-circuiting in a woodchip bioreactor using porewater sampling.