Simultaneous determination of macronutrients, micronutrients and trace elements in mineral fertilizers by inductively coupled plasma optical emission spectrometry

Souza, Sidnei de Oliveira; Costa, Silvânio Silvério Lopes da; Santos, Dayane Melo; Pinto, Jéssica dos Santos; Garcia, Carlos Alexandre Borges; Alves, José do Patrocínio Hora; Araújo, Rennan Geovanny Oliveira

doi:10.1016/j.sab.2014.03.008

Cited by 28 publications

(4 citation statements)

References 38 publications

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“…The detection and quantification limits are given in Table 3. The sensitivity of the method proposed in this study is comparable to that of the methods reported in the literature [15]. According to the results obtained, the performance criteria imposed in this "in-house" validation study were met.…”

Section: Measurement Uncertaintysupporting

confidence: 69%

The Optimization and Validation of the Method for the Determination of Micronutrients in Organic Fertilizers by Inductively Coupled Plasma Optical Emission Spectrometry

Capră,

Stoica,

Ivan

et al. 2023

NeXT-Chem 2023

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Section: Measurement Uncertaintysupporting

confidence: 69%

The Optimization and Validation of the Method for the Determination of Micronutrients in Organic Fertilizers by Inductively Coupled Plasma Optical Emission Spectrometry

Capră,

Stoica,

Ivan

et al. 2023

NeXT-Chem 2023

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“…PR samples microwave digestion was conducted in the closed system (Mars, CEM, USA), using the mixture of 65% HNO 3 and 37% HCl at the volume ratio of 3:1. The combination of HNO 3 with HCl in a closed system increases the efficiency of digestion due to the high oxidizing power of the mixture and the higher pressure and temperature generated inside the digestion vessel [ 16 ]. To prepare the PRs samples for Si determination, it was necessary to carry out total mineralization with the mixture of HF, HNO 3 , and HCl acids.…”

Section: Methodsmentioning

confidence: 99%

Quality of Phosphate Rocks from Various Deposits Used in Wet Phosphoric Acid and P-Fertilizer Production

2023

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Phosphate rocks (PRs) play a crucial role in ensuring the availability of phosphorous for the world’s food needs. PRs are used to manufacture phosphoric acid in the wet process as well as P-fertilizers. The chemical and mineralogical compositions of PRs from Djebel Onk (Algeria), Khneifiss (Syria), Negev (Israel), Bou Craa (Morocco), and Khouribga (Morocco) are discussed in this study. PRs were characterized by inductively coupled plasma optical emission spectrometry (ICP-OES), cold vapor atomic absorption spectrometry (CVAAS), ion chromatography (IC), and X-ray diffraction (XRD), as well as gravimetric and potentiometric methods. All PRs were mainly composed of CaO, P2O5, SiO2, F, SO3, Na2O, MgO, Al2O3, Fe2O3, SrO, and K2O at the level of wt.%. The P2O5 content accounted for 28.7–31.2%, which indicates that these are beneficial rocks to a marketable product. The degree of PR purity expressed by the minor elements ratio index (MER index) varied from 2.46% to 10.4%, and the CaO/P2O5 weight ratio from 1.6 to 1.9. In addition, the occurrence of trace elements such as As, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Ti, V, U, and Zn, as well as Cr(VI) and Cl ions at the level of mg∙kg−1 was found. Since PRs will be used to produce P-fertilizers, their composition was compared with the regulatory parameters set up by EU Regulation 2019/1009 related to the heavy metals (As, Cd, Pb, Ni, Hg, Cu, Zn) and Cr(VI) contents in inorganic fertilizers. The heavy metals and Cr(VI) content in all PRs did not exceed the limit values. XRD analysis revealed that fluorapatite, hydroxyapatite, carbonate fluorapatite, and carbonate hydroxyapatite were the dominant minerals. The accuracy and precision of the used methods were evaluated by analysis of standard reference materials (SRM) for Western Phosphate Rock (NIST 694). The recovery was 85.3% for U and 109% for K2O, and the RSD ranged from 0.67% to 12.8%.

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“…Inductively coupled plasma atomic emission spectroscopy (ICP-AES) allows rapid analysis and simultaneous determination of primary and secondary nutrients as trace elements in fertilizers [2,13,14]. ICP-AES is a well-known analytical technique suitable for simultaneous determination of almost 70 chemical elements, as it provides high sensitivity and satisfactory detectability, has a wide range of applications, and does not suffer from important spectral interferences [15][16][17], except in case of solutions with high TDS. The great advantage of simultaneous determination of various elements in fertilizers, like P and K, has already been highlighted by other researchers [18]; this becomes more attractive considering the capability of measuring also semi-metals, like boron [19], or non-metals, like phosphorus and sulfur.…”

Section: Introductionmentioning

confidence: 99%

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

Viso

Zachariadis

2018

Separations

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Simultaneous determination of phosphorus and boron in fertilizers was performed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Three different samples were analyzed, of which two were inorganic and one was of organic composition. Analysis of the samples was performed after heated acidic digestion to completely dissolve them, using two different acid mixtures. A solution of HCl + HNO 3 was used to digest the inorganic fertilizers, and a solution of H 2 SO 4 + HNO 3 for the organic fertilizer. The spectral emission lines used were 213.617 nm and 214.917 nm for P and 249.772 nm, 249.677 nm and 208.957 nm for B. The detection and quantification limits for P were between 10-20 mg/kg and 40-80 mg/kg respectively, while for B they ranged between 10-30 mg/kg and 40-100 mg/kg respectively. The repeatability of the technique was found to be within the range 0.9-17.0% for P and 1.7-23.4% for B, expressed as relative standard deviation (RSD). The concentrations found by the proposed method are in good agreement with those reported on their package labels.

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Simultaneous determination of macronutrients, micronutrients and trace elements in mineral fertilizers by inductively coupled plasma optical emission spectrometry

Cited by 28 publications

References 38 publications

The Optimization and Validation of the Method for the Determination of Micronutrients in Organic Fertilizers by Inductively Coupled Plasma Optical Emission Spectrometry

The Optimization and Validation of the Method for the Determination of Micronutrients in Organic Fertilizers by Inductively Coupled Plasma Optical Emission Spectrometry

Quality of Phosphate Rocks from Various Deposits Used in Wet Phosphoric Acid and P-Fertilizer Production

Method Development of Phosphorus and Boron Determination in Fertilizers by ICP-AES

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