Sequential flow injection spectrophotometric determination of nitrite and nitrate in various samples

Kazemzadeh, Asghar; Ensafi, Ali A.

doi:10.1016/s0003-2670(01)01146-1

Cited by 65 publications

(28 citation statements)

References 11 publications

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“…Many methods, including spectrophotometric, 6,7 chromatographic, [8][9][10][11] potentiometric, 12,13 gas chromatographymass spectrometry (GC-MS) and liquid chromatography with fluorescence detection 14 and flow injection analysis [15][16][17] have been reported for the quantitative and qualitative analysis of nitrite and nitrate. Nonetheless, most of these methods suffer from a number of disadvantages, such as highly complication and laborious derivitization, the need for toxic reagents and harmful organic solvents, extensive sample preparation, time-consuming analysis, stability of the colored product formed, etc.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Nitrite and Nitrate in Potato and Water Samples Using Negative Electrospray Ionization Ion Mobility Spectrometry

2012

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Nowadays, nitrite and nitrate ions are analyzed in biological samples using laborious and expensive methods; such as HPLC, CE, MS-MS. In this work, the simultaneous analysis of nitrite and nitrate ions was conducted by electrospray ionization-ion mobility spectrometry (ESI-IMS), without using any complicated or laborious derivitization step. Ion mobility spectrometry with low cost, inexpensive maintenance and very fast analysis makes an attractive technique for the simultaneous determination of these ions in foodstuff and drinking water samples. The analyte interference was systematically investigated for binary mixture analysis. The obtained results provided detection limits of 3.8 and 4.7 μg/L for nitrite and nitrate, respectively. A linear dynamic range of about 2 orders of magnitude, and relative standard deviations below 5% were obtained by the proposed method for the analysis of both ions. Also, the proposed method was used to analyze various real samples of potato and drinking water samples, and the obtained results confirmed the capability of negative ESI-IMS for the simultaneous detection of nitrite and nitrate.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Nitrite and Nitrate in Potato and Water Samples Using Negative Electrospray Ionization Ion Mobility Spectrometry

2012

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“…Excess concentration of nitrite in drinking water is hazardous to health, especially for infants and pregnant women. Nitrite reacts readily with secondary and tertiary amines and amides in human body producing toxic and carcinogenic nitrosamines compounds [1,2]. They also oxidize iron in hemoglobin of the red blood cells to form methemoglobin, which is unable to carry oxygen causing blue baby syndrome [3,4].…”

Section: Introductionmentioning

confidence: 99%

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

Nagaraja

Al-Tayar

Shivakumar

et al. 2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…Excess concentration of nitrite and nitrate in drinking water is hazardous to health, especially for pregnant women (Kazemzadeh and Ensafi 2001). Main threats to health that arise from the ingestion of these ions are reported as ''blue baby'' syndrome and gastric cancer (Swann 1975;BruningFann and Kaneene 1993;Eaton et al 1978;Cox and Frank 1982).…”

Section: Introductionmentioning

confidence: 99%

Introduction of a spectrophotometric method for simultaneous determination of nitrite and nitrate in water samples using partial least squares

Shariati-Rad

Irandoust

Haghighi

2015

Int. J. Environ. Sci. Technol.

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A simple and sensitive spectrophotometric method for simultaneous determination of nitrite and nitrate was introduced. The method is based on the reaction of nitrite and nitrate with 2,4-xylenol as reagent in the concentrated sulfuric acid. Calibration curves were linear in the range of 0.2-20.0 and 0.5-7.0 mg L -1 for nitrite and nitrate, respectively. Due to the severe spectral overlapping of the reaction products of two anions with 2,4-xylenol, partial least squares (PLS) was used for simultaneous determination of nitrite and nitrate in the mixtures. For calibration and validation, 25 binary mixtures of nitrite and nitrate (17 calibration and eight external test samples) were designed by simplex lattice design with lattice degree of one. PLS models with Q 2 values of 0.988 and 0.976 were constructed for nitrite and nitrate, respectively. The validated models were used to analyze real water samples. With the recommended method, simultaneous determination of nitrite and nitrate in water samples is possible with satisfactory results.

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Sequential flow injection spectrophotometric determination of nitrite and nitrate in various samples

Cited by 65 publications

References 11 publications

Simultaneous Determination of Nitrite and Nitrate in Potato and Water Samples Using Negative Electrospray Ionization Ion Mobility Spectrometry

Simultaneous Determination of Nitrite and Nitrate in Potato and Water Samples Using Negative Electrospray Ionization Ion Mobility Spectrometry

A simple and sensitive spectrophotometric method for the determination of trace amounts of nitrite in environmental and biological samples using 4-amino-5-hydroxynaphthalene-2,7-disulphonic acid monosodium salt

Introduction of a spectrophotometric method for simultaneous determination of nitrite and nitrate in water samples using partial least squares

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