Determination of nitrite in tap waters based on fluorosurfactant-capped gold nanoparticles-enhanced chemiluminescence from carbonate and peroxynitrous acid

Li, Jinge; Li, Qianqian; Lu, Chao; Zhao, Lixia

doi:10.1039/c0an00918k

Cited by 53 publications

(27 citation statements)

References 35 publications

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“…Li et al . recently reported a CL method for nitrite, based on enhancement of the CL emission from the interaction of carbonate with fluorosurfactant‐capped gold nanoparticles, with a limit of detection of 36 nmol/L (0.5 µg/L) .…”

Section: Introductionmentioning

confidence: 99%

Determination of nitrate and nitrite in freshwaters using flow‐injection with luminol chemiluminescence detection

et al. 2011

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A simple and sensitive flow-injection (FI) method for the determination of nitrate and nitrite in natural waters, based on luminol chemiluminescence (CL) detection, is reported. Nitrate was reduced online to nitrite via a copperized cadmium (Cu-Cd) column and then reacted with acidic hydrogen peroxide to form peroxynitrous acid. CL emission was observed from the oxidation of luminol in an alkaline medium in the presence of the peroxynitrite anion. The limits of detection (S:N = 3) were 0.02 and 0.01 µg N/L, with sample throughputs of 40 and 90 /h for nitrate and nitrite, respectively. Calibration graphs were linear over the range 0.02-50 and 0.01-50 µg N/L [R2 = 0.9984 (n = 8) and R2 = 0.9965 (n = 7)] for nitrate and nitrite, respectively, with relative standard deviations (RSDs; n = 3) in the range 1.8-4.6%. The key chemical and physical variables (reagent concentrations, buffer pH, flow rates, sample volume, Cu-Cd reductor column length) were optimized and potential interferences investigated. The effect of cations [Ca(II), Mg(II), Co(II), Fe(II) and Cu(II)] was masked online with EDTA. Common anions (PO4(3-) , SO4(2-) and HCO3-) did not interfere at their maximum admissible concentrations in freshwaters. The effect of salinity on the luminol CL reaction with and without nitrate and nitrite (2 and 0.5 µg N/L, respectively) was also investigated. The method was successfully applied to freshwaters and the results obtained were in good agreement with those obtained by an automated segmented flow analyser reference method.

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Section: Introductionmentioning

confidence: 99%

Determination of nitrate and nitrite in freshwaters using flow‐injection with luminol chemiluminescence detection

et al. 2011

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“…The unique properties of metal nanoparticles render them suitable to applications across a range of disciplines including catalysis 4 , chemical sensing 5 , biolabeling 6 and photonics 7 . In particular, gold nanoparticles (AuNPs) have shown superior properties when compared to other metallic nanoparticles 8 – 10 . Due to their high molar extinction coefficient 11 , strong localized surface Plasmon resonance 12 , distance dependent optical properties 13 , stability 14 , and strong, well-defined color color change 15 , AuNPs have been widely applied for the selective probe for detection of anions 16 , 17 .…”

Section: Introductionmentioning

confidence: 99%

Selective Colorimetric Detection of Nitrite in Water using Chitosan Stabilized Gold Nanoparticles Decorated Reduced Graphene oxide

Amanulla¹,

Palanisamy

Chiu

et al. 2017

Sci Rep

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Excess nitrite (NO2 -) concentrations in water supplies is considered detrimental to the environment and human health, and is associated with incidence of stomach cancer. In this work, the authors describe a nitrite detection system based on the synthesis of gold nanoparticles (AuNPs) on reduced graphene oxide (rGO) using an aqueous solution of chitosan and succinic acid. The AuNPs-rGO nanocomposite was confirmed by different physicochemical characterization methods including transmission electron microscopy, elemental analysis, X-ray diffraction, UV-visible (UV-vis) and Fourier transform infrared spectroscopy. The AuNPs-rGO nanocomposite was applicable to the sensitive and selective detection of NO2 − with increasing concentrations quantifiable by UV–vis spectroscopy and obvious to the naked eye. The color of the AuNPs-rGO nanocomposite changes from wine red to purple with the addition of different concertation of NO2 −. Therefore, nitrite ion concentrations can be quantitatively detected using AuNPs-rGO sensor with UV-vis spectroscopy and estimated with the naked eye. The sensor is able to detect NO2 − in a linear response ranging from 1 to 20 μM with a detection limit of 0.1 μM by spectrophotometric method. The as-prepared AuNPs-rGO nanocomposite shows appropriate selectivity towards NO2 − in the presence of potentially interfering metal anions.

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“…However, such transformation suffers from complicated procedure. 19 These methods were interfered with some transition metals, because they were achieved in alkaline media. The decomposition of peroxynitrite with weak CL signal has been developed as a ow-injection method for nitrite sensing.…”

Section: Introductionmentioning

confidence: 99%

Gold nanocluster-enhanced peroxynitrous acid chemiluminescence for high selectivity sensing of nitrite

Sui

Deng

et al. 2015

RSC Adv.

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Peroxynitrous acid (ONOOH) produced by online mixing of nitrite and acidified hydrogen peroxide could induce weak chemiluminescence (CL). A stronger chemiluminescence was observed in the presence of gold nanoclusters (Au NCs). This novel CL system was developed as a flow-injection method for the nitrite determination directly and conveniently. This method was achieved in acidic medium, which greatly improved its selectivity. The CL mechanism of the peroxynitrous acid-gold nanocluster system was investigated using CL spectroscopy, UV-visible spectroscopy and radical scavengers. The enhanced CL could be attributed to the catalysis of Au nanoclusters. The proposed method has been applied to determine nitrite in water samples with good accuracy and precision.

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Determination of nitrite in tap waters based on fluorosurfactant-capped gold nanoparticles-enhanced chemiluminescence from carbonate and peroxynitrous acid

Cited by 53 publications

References 35 publications

Determination of nitrate and nitrite in freshwaters using flow‐injection with luminol chemiluminescence detection

Determination of nitrate and nitrite in freshwaters using flow‐injection with luminol chemiluminescence detection

Selective Colorimetric Detection of Nitrite in Water using Chitosan Stabilized Gold Nanoparticles Decorated Reduced Graphene oxide

Gold nanocluster-enhanced peroxynitrous acid chemiluminescence for high selectivity sensing of nitrite

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