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Versatile Three-Dimensional-Printed Platform for Nitrite Ion Analyses Using a Smartphone with Real-Time Location.

Roberto Pol1,2, Laura Diez1, David Gabriel2

  • 1Department of Chemistry, Faculty of Science, Edifici C-Nord , Universitat Autònoma de Barcelona , Carrer dels Til·lers , 08193 Bellaterra (Cerdanyola del Vallès), Barcelona , Spain.

Analytical Chemistry
|October 8, 2019
PubMed
Summary

A new smartphone system accurately measures toxic nitrite ion levels in water. This low-cost, 3D-printed device and app enable global water quality monitoring to combat environmental issues like eutrophication.

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Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx
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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Ecotoxicology

Background:

  • Nitrogen compounds are vital in aquatic ecosystems, but industrial activities disrupt the nitrogen cycle.
  • Disrupted nitrogen cycles lead to severe environmental problems like eutrophication and water acidification.
  • Monitoring nitrogen compounds, especially toxic nitrite ions, is crucial for ecosystem health.

Purpose of the Study:

  • To develop a portable, user-friendly system for determining nitrite ion concentration in environmental samples.
  • To leverage smartphone technology for accessible and widespread water quality assessment.
  • To facilitate global tracking of nitrite ion levels for environmental management.

Main Methods:

  • A smartphone readout-based system was developed using 3D printing for customizability.
  • The system utilizes the smartphone's built-in ambient light sensor for measurements.
  • A dedicated application, "ALSens", was created for data acquisition and analysis.

Main Results:

  • The developed system enables accurate determination of nitrite ion concentration.
  • The 3D-printed device is adaptable to various smartphone models.
  • The "ALSens" application allows non-expert users to conduct analyses and upload data.
  • Automated data submission to an online database enables worldwide nitrite ion mapping.

Conclusions:

  • This smartphone-based system offers a practical and scalable approach for nitrite ion screening.
  • The technology has the potential to become a standard tool for global water quality monitoring.
  • Accessible nitrite ion monitoring can aid in mitigating the impacts of nitrogen cycle disruption.