Determination of valuable elements in natural phosphates

Stoica, Ligia; Georgescu, I. L.; Filip, Daniel S.; Bunus, F.

doi:10.1007/bf02033772

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…The average Cd concentration in PR (18 mg kg − 1 ) is 60 times its average content in shale's (0.3 mg kg − 1 ) [12]. The amounts of Cd vary widely not only among various PR sources but also even in the same deposit [13]. Composition of phosphate rocks largely depends on its type and origin.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Cd contents in several phosphate rocks used for the production of fertilizer

Mar

Okazaki

2012

Microchemical Journal

120

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Section: Introductionmentioning

confidence: 99%

Investigation of Cd contents in several phosphate rocks used for the production of fertilizer

Mar

Okazaki

2012

Microchemical Journal

120

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“…It should be noted that lower P-concentrations in rock phosphate and lower quality deposits generate more waste materials, and, on the other hand, more energy and chemicals are required per ton of useful phosphate produced [23]. It is also important to mention the great risk of contamination with different metals present in varying concentrations in rock phosphate and its fertilizer derivates [24,25]. Three facts should be considered when assessing the current situation in this field.…”

Section: Conventional P-sourcesmentioning

confidence: 99%

Fungi, P-Solubilization, and Plant Nutrition

Mendes

Deriu

Benedetto³

et al. 2022

Microorganisms

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The application of plant beneficial microorganisms is widely accepted as an efficient alternative to chemical fertilizers and pesticides. It was shown that annually, mycorrhizal fungi and nitrogen-fixing bacteria are responsible for 5 to 80% of all nitrogen, and up to 75% of P plant acquisition. However, while bacteria are the most studied soil microorganisms and most frequently reported in the scientific literature, the role of fungi is relatively understudied, although they are the primary organic matter decomposers and govern soil carbon and other elements, including P-cycling. Many fungi can solubilize insoluble phosphates or facilitate P-acquisition by plants and, therefore, form an important part of the commercial microbial products, with Aspergillus, Penicillium and Trichoderma being the most efficient. In this paper, the role of fungi in P-solubilization and plant nutrition will be presented with a special emphasis on their production and application. Although this topic has been repeatedly reviewed, some recent views questioned the efficacy of the microbial P-solubilizers in soil. Here, we will try to summarize the proven facts but also discuss further lines of research that may clarify our doubts in this field or open new perspectives on using the microbial and particularly fungal P-solubilizing potential in accordance with the principles of the sustainability and circular economy.

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Analysis of selected fertilizers imported to Libya for major, minor, trace and toxic elements using ICP-OES and INAA

Elghawi

Pátzay

Vajda

et al. 1999

J Radioanal Nucl Chem

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The concentration of 35 elements (AI, As, B, Ba, Be, Ca, Cd, Co, C1, Cr, Cu, Fe, K, Mg, Mn, Mo, N, Na, Ni, P, Pb, Rb, S, Sb, Sc, Si, Sr, Tb, Th, Ti, U, V, Yb, Zn and Zr) in six different imported, NPK, NP and K fertilizers were determined by ICP-OES in two different laboratories and by INAA. The fertilizers were labeled as 24/12 (Belgium), 46/18 (Morocco), 50% ammonium sulfate 50% K20 (Belgium), New 24/12 (Belgium), 16.8.24 (France) and 17.17.17 (France). It is clear that these fertilizers vary widely in their heavy metals and uranium content, and the accumulation of certain elements in vitally important media such as water, soil and food is undesirable from the medical point of view. The results obtained were acceptable and intercomparison between various methods was carried out.

show abstract

Determination of valuable elements in natural phosphates

Cited by 11 publications

References 6 publications

Investigation of Cd contents in several phosphate rocks used for the production of fertilizer

Investigation of Cd contents in several phosphate rocks used for the production of fertilizer

Fungi, P-Solubilization, and Plant Nutrition

Analysis of selected fertilizers imported to Libya for major, minor, trace and toxic elements using ICP-OES and INAA

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