Ultrasensitive Detection of Nitrite through Implementation of N-(1-Naphthyl)ethylenediamine-Grafted Cellulose into a Paper-Based Device

Teresa L. Mako, Adelaide M. Levenson, Mindy Levine

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Reported herein is the immobilization of N-(1-naphthyl)ethylenediamine (NED) on cellulose via an epichlorohydrin (ECH)-based covalent attachment and the implementation of the functionalized cellulose into an ultrasensitive, paper-based device for nitrite detection. The reported functionalization procedure resulted in a 12.9-fold higher functionalization density than the density that results from the previously reported procedures, and the subsequent device allows for nitrite detection limits in synthetic freshwater and real seawater of 0.26 and 0.22 μM, respectively. The sensor is efficient in a wide range of temperature, humidity, turbidity, and salinity conditions and has been successfully applied for nitrite detection in real water samples.

Original languageEnglish
Pages (from-to)1207-1215
Number of pages9
JournalACS Sensors
Volume5
Issue number4
DOIs
StatePublished - 24 Apr 2020
Externally publishedYes

Keywords

  • Griess reaction
  • cellulose modification
  • colorimetric detection
  • nitrite
  • paper-based device

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