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Novel polymeric nanoparticles as nanofertilisers for alkaline iron‐deficient co...

Pinho, Simão; Santos, Carla; Moniz, Tânia; Granja, Andreia; Sarraguça, Mafalda; Reis, Salette; Rangel, Maria; Vasconcelos, Marta

Background and aims Iron deficiency chlorosis (IDC) is a nutritional disorder impacting plants and is prevalent in calcareous alkaline soils, correspond- ing to 30% of the world’s arable land. IDC compro- mises iron uptake in crops such as soybean (Glycine max). To improve the effect of iron fertilisers, we sought to develop a nanotechnology-based interven- tion using polymeric nanoparticles (NPs) loaded with F...


Sequential injection lab-on-valve with bead injection for iron speciation in wa...

Pereira, Mafalda G.; Ribas, Tânia C. F.; Moniz, Tânia; Rangel, Maria; Mesquita, Raquel B. R.; Rangel, António O. S. S.


Realism-based assessment of the efficacy of potassium peroxymonosulphate on Ste...

Oliveira, Isabel M.; Gomes, Inês B.; Moniz, Tânia; Simões, Lúcia Chaves; Rangel, Maria; Simões, Manuel

The potential of pentapotassium bis(peroxymonosulphate) bis(sulphate) (OXONE) to control biofilms in drinking water distribution systems (DWDS) was evaluated and compared to chlorine disinfection. Mature biofilms of drinking water (DW)-isolated Stenotrophomonas maltophilia were formed using a simulated DWDS with a rotating cylinder reactor (RCR). After 30 min of exposure, OXONE at 10 × minimum bactericidal conc...


Gene expression analysis of soybean plants treated with iron-based nanofertilizers

Pinho, Simão; Santos, Carla; Rangel, Maria; Reis, Salette; Moniz, Tânia; Vasconcelos, Marta


Advanced nanofertilizers for iron uptake in calcareous alkaline soils

Pinho, Simão; Santos, Carla; Rangel, Maria; Vasconcelos, Marta; Reis, Salette; Moniz, Tânia


New iron nanofertilizers to amend chlorosis in soybean plants

Moniz, Tânia; Pinho, Simão; Santos, Carla; Granja, Andreia; Vasconcelos, Marta; Castro, Baltazar de; Rangel, Maria; Reis, Salette


Iron nanofertilizers for the development of sustainable soybean crops

Pinho, Simão; Santos, Carla; Rangel, Maria; Vasconcelos, Marta; Granja, Andreia; Reis, Salette; Moniz, Tânia


Sequential injection method for bi-parametric determination of iron and mangane...

Mesquita, Raquel B. R.; Moniz, Tânia; Nunes, Maria J. M.; Mesquita, Letícia S.; Rangel, Maria; Rangel, António O. S. S.

The aim of this work was to develop a sequential injection (SI) method for the determination of the micronutrients iron and manganese, in soil leachates, as a tool to assess potential groundwater contamination. The described sequential injection method was based on the reaction of iron with chelator MRB12, a greener alternative chromogenic reagent, and the reaction of manganese with zincon, within a single mani...


Foliar application of 3-hydroxy-4-pyridinone Fe-chelate [Fe(mpp)3] induces resp...

Santos, Carla S.; Rodrigues, Elsa; Ferreira, Sofia; Moniz, Tânia; Leite, Andreia; Carvalho, Susana M. P.; Vasconcelos, Marta W.; Rangel, Maria

Iron (Fe) deficiency chlorosis (IDC) affects the growth of several crops, especially when growing in alkaline soils. The application of synthetic Fe-chelates is one of the most commonly used strategies in IDC amendment, despite their associated negative environmental impacts. In a previous work, the Fe-chelate tris(3-hydroxy-1-(H)-2-methyl-4-pyridinonate) iron(III) [Fe(mpp)3] has shown great potential for allev...


Use of an ether-derived 3-hydroxy-4-pyridinone chelator as a new chromogenic re...

Moniz, Tânia; Bassett, Chelsea R.; Almeida, M. Ines G. S.; Kolev, Spas; Rangel, Maria; Mesquita, Raquel B. R.

This article reports on the development and validation of a disposable microfluidic paper-based analytical device (μPAD) for on-hand. in-situ, and cheap Fe(III) determination in natural waters complying with World Health Organization guidelines. The developed μPAD used 3-hydroxy-4-pyridinone (3,4-HPO) as a colour reagent due to its considerably lower toxicity than traditionally used iron analytical reagents. It...


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