Method for detecting nitrite based on silver-coated gold nanoparticles

Method for detecting nitrite based on silver-coated gold nanoparticles

The invention discloses a method for detecting nitrite based on silver-coated gold nanoparticles. The method comprises the following steps: adding a proper amount of HCl, AA and AgNO3 into gold nanoparticles to prepare the silver-coated gold nanoparticles; soaking a glass slide by adopting an MPTMS...

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Hauptverfasser: DONG JIE, XU DONG, WU WEI, ZHOU RONGJU, AN QINGXIAO, LIN QINLU
Format: Patent
Sprache:chi ; eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator DONG JIE
XU DONG
WU WEI
ZHOU RONGJU
AN QINGXIAO
LIN QINLU
description The invention discloses a method for detecting nitrite based on silver-coated gold nanoparticles. The method comprises the following steps: adding a proper amount of HCl, AA and AgNO3 into gold nanoparticles to prepare the silver-coated gold nanoparticles; soaking a glass slide by adopting an MPTMS solution, a silver-coated gold nanoparticle solution and a naphthalene ethylenediamine hydrochloridesaturated solution in sequence; mixing a to-be-detected solution containing nitrite with a sulfanilic acid solution to form a mixed solution A; soaking the modified glass slide into the mixed solution A, cleaning the glass slide with ultrapure water after the reaction is finished, drying, and observing the light intensity change of the silver-coated gold nanoparticles through a dark field microscope to detect the content of nitrite. The method for detecting nitrite based on silver-coated gold nanoparticles has the advantages of convenience, rapidness, low detection lower limit, high sensitivity, high selectivity, spa
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Method for detecting nitrite based on silver-coated gold nanoparticles
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