Abstract：
:Hydroponics is a water, energy, space, and cost efficient system for growing plants in constrained spaces or land exhausted areas. Precise control of hydroponic nutrients is essential for growing healthy plants and producing high yields. In this article we report for the first time on a new computer-operated analytical platform which can be readily used for the determination of essential nutrients in hydroponic growing systems. The liquid-handling system uses inexpensive components (i.e., peristaltic pump and solenoid valves), which are discretely computer-operated to automatically condition, calibrate and clean a multi-probe of solid-contact ion-selective electrodes (ISEs). These ISEs, which are based on carbon nanotubes, offer high portability, robustness and easy maintenance and storage. With this new computer-operated analytical platform we performed automatic measurements of K(+), Ca(2+), NO3(-) and Cl(-) during tomato plants growth in order to assure optimal nutritional uptake and tomato production.
journal_name
Food Chemjournal_title
Food chemistryauthors
Rius-Ruiz FX,Andrade FJ,Riu J,Rius FXdoi
10.1016/j.foodchem.2013.09.114subject
Has Abstractpub_date
2014-03-15 00:00:00pages
92-7eissn
0308-8146issn
1873-7072pii
S0308-8146(13)01379-4journal_volume
147pub_type
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