A review on spectroscopic methods for determination of nitrite and nitrate in environmental samples

Singh, Priyanka; Singh, Manish Kumar; Beg, Younus Raza; Nishad, Gokul Ram

doi:10.1016/j.talanta.2018.08.028

Cited by 217 publications

(104 citation statements)

References 212 publications

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“…Nitrate concentration was measured through a spectrophotometric method at 220 and 275 nm by using a UV–VIS spectrophotometer (Shimadzu UV-2600, Tokyo, Japan) [ 19 ]. The influence of nitrite was eliminated by adding 0.8% aminosulfonic acid solution.…”

Section: Methodsmentioning

confidence: 99%

Characterization and Electrochemical Behaviour of Nanoscale Hydrotalcite-Like Compounds toward the Reduction of Nitrate

Yang

Yun

et al. 2020

Nanomaterials

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In this research, nano Cu/Al–HTLCs, Co/Al–HTLCs and Cu/Co/Al–HTLCs were synthesized, characterized, and tested in electrolytic reduction nitrate. Experimental results showed that Cu/Al–HTLCs were less stable than Co/Al–HTLCs due to the Jahn–Teller effect. However, electrocatalytic activity of copper was superior to that of cobalt; thus, Cu/Co/Al–HTLCs were selected based on their stable crystalline structure and electrochemical activity. The optimized Cu2CoAl–HTLC was highly active in nitrate reduction, with two peaks for nitrate and nitrite reduction, respectively. Ammonia, nitrite and N-containing gases were found to be the final products of constant potential electrolysis at −0.54 and −0.74 V.

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Section: Methodsmentioning

confidence: 99%

Characterization and Electrochemical Behaviour of Nanoscale Hydrotalcite-Like Compounds toward the Reduction of Nitrate

Yang

Yun

et al. 2020

Nanomaterials

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“…Determination of nitrates and nitrites concentration or their presence in an aqueous medium can be performed using various methods, which have been developed over time. Basic principles, detection limits, advantages and disadvantages concerning various methods were processed in some detailed works (Lenghartová et al, 2015;Wang et al, 2017;Singh et al, 2019). Spectroscopic methods, as ultraviolet and visible (UV-VIS), spectrofluorimetric, Raman, infrared, Fourier-transform infrared, atomic absorption, chemiluminescence, mass spectroscopy, electron paramagnetic spectroscopy or nuclear resonance spectroscopy, are the most frequently applied for detection.…”

Section: Methods For Nitrates and Nitrites Determinationmentioning

confidence: 99%

Relationship of nitrates and nitrites in the water environment with humans and their activity

Balejčíková¹,

Tall²,

Kandra³

et al. 2020

ahs

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Nitrates and nitrites in water pose a health and environmental hazards, in particular when exceeding limits defined in the European Union, i.e. max. 50 mg l-1 of nitrates. It is not recommended to exceed the limit of 10 mg l-1 of nitrates for infants and children. The maximum concentration of nitrites is 0.5 mg l-1 for adults and infants less than 0.1 mg l-1. Our work offers a review of the water quality concerning the relationship between nitrates/nitrites and humans. Basic properties and forms of nitrates, their use for human activities, importance and risks to human health and possibilities of their physicochemical determination are summarized. Our study demonstrates also the novel approaches to the nitrates decontamination in a water environment using various nanomaterials. We aimed at a collection of records from the monitoring of nitrates in selected areas in Slovakia to show good quality of water in various water sources, which over time improves due to the increasingly low fertilization intensity and thus of agriculture production, which is gradually being replaced by imports.

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“…Its protonated form, that is, hydrogen sulfide, is highly toxic for aquatic organisms and can lead to unconsciousness and respiratory paralysis at relatively low concentrations [3]. A number of analytical techniques, including UV‐vis spectrophotometry, luminescence, electrochemistry, and separation techniques such as chromatography or capillary electrophoresis, among others, have been employed for determining nitrite [4–6] and sulfide [7]. From the different alternatives, nitrite is by far determined by UV‐vis spectrophotometry by means of the Griess reaction, which involves the formation of a colored azo dye by reaction of nitrite with a primary aromatic amine in acidic media and subsequent reaction of the formed diazonium salt with an aromatic compound containing an amino group [4,8].…”

Section: Introductionmentioning

confidence: 99%

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

Pena‐Pereira

Matesanz

Lavilla

et al. 2020

J of Separation Science

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The use of paper-based devices in combination with noninstrumental detection systems is becoming increasingly important in the analytical field due to its simplicity, rapidity, and low cost. However, their use for determination of volatile analyte derivatives is still relatively scarce. The present work reports on the assessment of a paper-based gas-sensing approach for the simultaneous noninstrumental colorimetric detection of nitrite and sulfide. Colorimetric systems based on the Griess and methylene blue assays, formation of colored metallic sulfides, and interaction/reaction with in situ generated metallic nanoparticles were preliminary evaluated. Then, the effect of experimental variables affecting the analytical performance of the paper-based gas sensor was studied with two digitization systems, namely a scanner and a smartphone.Under optimal conditions, the developed system yielded limits of detection of 0.055 and 0.005 mg/L for nitrite and sulfide, respectively. The repeatability, expressed as relative standard deviation, was found to be 5.9 and 6.7% for nitrite and sulfide, respectively. The proposed method was finally applied to the analysis of water samples, showing recoveries in the range of 95-105%. K E Y W O R D Snoninstrumental detection, paper-based analytical devices, scanometric analysis, smartphones, water analysis 1908

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A review on spectroscopic methods for determination of nitrite and nitrate in environmental samples

Cited by 217 publications

References 212 publications

Characterization and Electrochemical Behaviour of Nanoscale Hydrotalcite-Like Compounds toward the Reduction of Nitrate

Characterization and Electrochemical Behaviour of Nanoscale Hydrotalcite-Like Compounds toward the Reduction of Nitrate

Relationship of nitrates and nitrites in the water environment with humans and their activity

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

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