An atomic absorption spectrometric method for the determination of phosphorus in foodstuffs using the bismuth phosphomolybdate complex

Mihajlović, P.; Kaljevic, M Vesna; Dzudovic, M Radmila; Stanić, Denis; Mihajlović, Vladimir

doi:10.2298/jsc0006331m

Cited by 7 publications

(10 citation statements)

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“…At a current higher than 5 mA, the oxidation was not quantitatively and proceeded with a current efficiency of less than 99%. These results are similar with results presented in the papers by Vajgand et al 3,42,46 which show that the hydrogen ions obtained by coulometry is successfully apllied for determination of weak bases. Furthermore, the results obtained in the determination of the bases using pyrite indicator electrode (Table 3) deviated on average by 0.2-0.7% from those obtained with a glass electrode.…”

Section: Coulometric-potentiometric Determinations Of Bases Using Pyrsupporting

confidence: 92%

“…3,6,[41][42][43][44][45] Some dihydroxy and trihydroxy phenols and some esters of gallic acid can be applied for the coulometric generation of acids (hydrogen ions) in some dipolar aprotic solvents, such as acetonitrile, acetic acid-acetic anhydride, nitromethane, sulfolane and g-butyrolactone.…”

Section: Coulometric-potentiometric Determinations Of Bases Using Pyrmentioning

confidence: 99%

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Application of Pyrite and Chalcopyrite Electrodes for the Acid-Base Determinations in Nitriles

Simi¹,

Stani²,

Antonijevi³

2011

J. Braz. Chem. Soc.

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Os minerais naturais pirita e chalcopirita tem sido usados como sensores em eletrodos indicadores usando acetronitrila e propionitrila como solventes. Os resultados mostram vantagens excepcionais da pirita e chacopirita como sensores eletroquímicos e também a possibilidade de aplicação desses eletrodos para determinações em solventes não aquosos onde eletrodos de vidro mostram dificuldades. O comportamento dos eletrodos indicadores de pirita e chalcopirita em nitrila foi avaliado pela titulação de diversas bases e ácidos de forças diferentes usando prótons e íons liato gerados pela oxidação de alguns ésteres de ácido gálico e fenóis diidróxi, bem como m-cresol e 3-metóxifenol. Os resultados obtidos com esses eletrodos foram comparados com os de eletrodos de vidro nas mesmas condições, obtendo-se boa concordância, reprodutividade e precisão. Os desvios padrão na determinação dos ácidos e bases investigados foram menores do que 0,9%. Em titulações potenciométricas com pirita e chalcopirita como eletrodos indicadores, o potencial é instantaneamente estabelecido. Ambos os eletrodos podem ser usados sem qualquer limitação temporal ou divergências potenciais consideráveis.The natural minerals pyrite and chalcopyrite have been used as the indicator electrode sensors using acetonitrile and propionitrile as solvents. The results show the exceptional advantage of pyrite and chalcopyrite as electrochemical sensors and also the possibility of the application of these electrodes for the determination in nonaqueous solutions where glass electrode shows many defaults. The behaviour of the pyrite and chalcopyrite indicator electrodes in nitriles were checked by titrating several bases and acids of different strengths using protons and lyate ions generated by the oxidation of some gallic acid esters and dihydroxy phenols, as well as m-cresol and 3-metoxy phenol. The results obtained by using these electrodes were compared with those obtained by the application of a glass electrode under the same conditions, and good agreement, reproducibility and accuracy were obtained. The standard deviation of the determination of the investigated acids and bases was less than 0.9%. In the potentiometric titrations with pyrite and chalcopyrite indicator electrodes, the potential is instantaneously established throughout. Both electrodes can be used without any time limit or without considerable divergence in potentials.

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Section: Coulometric-potentiometric Determinations Of Bases Using Pyrsupporting

confidence: 92%

Section: Coulometric-potentiometric Determinations Of Bases Using Pyrmentioning

confidence: 99%

Application of Pyrite and Chalcopyrite Electrodes for the Acid-Base Determinations in Nitriles

Simi¹,

Stani²,

Antonijevi³

2011

J. Braz. Chem. Soc.

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“…pH and EC meter were inserted to measure the parameters. Organic matter was determined by Walkley-Black method [20], TKN and TP by spectrometry [21] while heavy and alkaline metals by atomic absorption spectrometry and flame photometric methods, respectively [18]. The sieved, air-dried sediment sample (2 g) was digested with concentrated mixed acids (HNO3, H2SO4 and HClO4).…”

Section: Sample Collection and Analysismentioning

confidence: 99%

Impacts of Agricultural Poultry Farming on Water and Sediment Qualities

Taiwo¹,

Arowolo²

2017

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering

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Environmental risks and nuisances are associated with poultry farm operations leading to impairment of water and sediment qualities. This study was conducted to assess the effects of poultry farm wastes on water and sediment qualities of Alakata stream in Abeokuta, Nigeria. The Stream was monitored for six months and evaluated for physical and chemical parameters using standard procedures. Ten sampling stations were established; two points before the poultry farm site (controls) upstream while the remaining eight points were selected from the poultry farm downstream at a regular interval. Data collected were subjected to statistical analysis using SPSS 15.0. Results of water quality showed that total solids in control 1, and electrical conductivity in control 2 (samples collected before the poultry discharge point) were significantly lower than the values obtained at the discharge point. Sediment samples were also collected and analyzed for important parameters. Sediment's data exhibited higher mean values organic matter, total kjeldahl nitrogen, sodium and potassium at the poultry discharge point downstream relative to the control samples. The study revealed that water and sediment quality of the study stream had been impaired by the poultry farm operation. The principal component analysis was used to identify the pollution sources of the Stream.

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“…The excessive use of fertilizers and detergents leads to overgrowth of aquatic plants, reducing the dissolved oxygen level of water, although phosphate stimulates the growth of plankton and aquatic plants 1,2 . Phosphate analysis is important in various areas such as agricultural and clinical 3‐5 .…”

Section: Introductionmentioning

confidence: 99%

Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

Özkütük

Yıldız

Gündüz

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND In this study, the ion‐selective electrode (ISE) based on ion‐imprinted polymer (IIP) for the determination of phosphate has been described. For selective recognition of IIP, phosphate (analyte–template), chitosan and N‐(2‐aminoethyl)‐3‐aminopropyl‐trimethoxysilan (AAPTS) (functional monomers), ephychlorohydrin and tetraethoxysilicate (TEOS) (cross‐linking agents) were used. RESULTS The electrode was prepared using the IIP. The IIP‐1‐, IIP‐2‐ and IIP‐3‐based membranes showed a detection limit of 7.6 × 10−6, 5.1 × 10−6 and 2.5.10−7 mol L−1, respectively. Attractive features of these IIP‐based ion‐selective electrodes are a rather low detection limit and high selectivity compared with other phosphate molecules. CONCLUSION The proposed method has been applied successfully to analyze phosphate in household waste samples with recoveries of ≥90%. © 2021 Society of Chemical Industry (SCI).

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An atomic absorption spectrometric method for the determination of phosphorus in foodstuffs using the bismuth phosphomolybdate complex

Cited by 7 publications

References 1 publication

Application of Pyrite and Chalcopyrite Electrodes for the Acid-Base Determinations in Nitriles

Application of Pyrite and Chalcopyrite Electrodes for the Acid-Base Determinations in Nitriles

Impacts of Agricultural Poultry Farming on Water and Sediment Qualities

Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

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