Vanadium: History, chemistry, interactions with α-amino acids and potential therapeutic applications.

Carboxyl groups of citric acid in the process of complex formation with bivalent and trivalent metal ions in biological systems

Prevention of cyclophosphamide-induced hepatotoxicity and genotoxicity: Effect of an L-cysteine based oxovanadium(IV) complex on oxidative stress and DNA damage.

Correction for ‘Freezing temperature controlled deep eutectic solvent dispersive liquid–liquid microextraction based on solidification of floating organic droplets for rapid determination of benzoylureas residual in water samples with assistance of metallic salt’ by Miyi Yang et al., RSC Adv., 2017, 7, 56528–56536.

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Freezing temperature controlled deep eutectic solvent dispersive liquid–liquid microextraction based on solidification of floating organic droplets for rapid determination of benzoylureas residual in water samples with assistance of metallic salt

Asphaltenes precipitation and deposition is one of the main problems in the petroleum industries which has attracted the attention of many scholars. Precipitation and deposition of asphaltenes can lead to many problems in oil reservoirs such as plugging the pores of the reservoir rocks and changing the wettability of the rocks from water-wet to oil-wet. This ultimately causes a reduction or puts an end to production from reservoirs. Therefore, understanding the factors affecting the formation of asphaltenes precipitation can help us to avoid these drawbacks. Several factors including pressure, temperature, and composition changes have been studied in the literature. The effects of these parameters on the stability of asphaltenes are almost clear. However, the effects of water emulsions, which are formed during the water-based enhanced oil recovery (EOR) methods such as smart water and low salinity water flooding, on the instability of asphaltenes are still unknown and blurred. In this study, the effects o...

Investigating the Effect of Salinity on the Behavior of Asphaltene Precipitation in the Presence of Emulsified Water

Stability of water–Boscan crude oil emulsions: Effect of salts, alcohols and glycols

Stability of nickel(II) binary and ternary complexes with dipicolinic acid and the amino acids serine, threonine, methionine and phenylalanine

Solution equilibria and stabilities of binary and ternary Nickel(II) complexes with picolinic acid and small blood serum bioligands

Solution equilibria in the binary systems of Ni(II)–amino acid {aspartic acid (H2asp), glutamic acid (H2glu), cysteine (H2cys) and histidine (Hhis)} and in the ternary systems of Ni(II)–dipicolinic acid (H2dipic)–amino acid {aspartic acid (H2asp), glutamic acid (H2glu), cysteine (H2cys) and histidine (Hhis)} have been studied pH-potentiometrically. The formation constants of the resulting mixed ligand complexes have been determined at 25 °C and ionic strength 1.0 mol·dm−3 NaCl. In the Ni(II)–H2asp system the data indicated the formation of the [NiHL]+, NiL and [NiL2]2− complexes. For the Ni(II)–H2glu system, the formation of the species NiL and [NiL2]2− are indicated. In the Ni(II)–H2cys system the complexes [NiHL]+, NiL and [NiHL2]− were detected, while in the Ni(II)–Hhis system the species [NiH2L]3+ [NiHL]2+, NiL+, [Ni(HL)2]2+, [NiHL2]+ and NiL2 were detected. In the ternary system Ni(II)–H2dipic–H2asp, the species Ni(dipic)(H2L), [Ni(dipic)(HL)]−, [Ni(dipic)(L)]2− and [Ni(dipic)(L)(OH)]3− were detected. In the Ni(II)–H2dipic–H2glu system, the species Ni(dipic)(H2L), [Ni(dipic)(HL)]−, [Ni(dipic)(L)]2− and [Ni(dipic)(L)(OH)]3− were detected. In the Ni(II)–H2dipic–H2cys system, the species Ni(dipic)(H2L), [Ni(dipic)(HL)]− and [Ni(dipic)(L)]2− were detected. Finally, in the Ni(II)–H2dipic–Hhis system, the species [Ni(dipic)(L)]− and [Ni(dipic)(L)(OH)]2− were detected. Species distribution diagrams as a function of pH are briefly discussed.

Solution Equilibria and Stabilities of Binary and Ternary Systems of Nickel(II) Complexes with Dipicolinic Acid and the Amino Acids (Histidine, Cysteine, Aspartic and Glutamic Acids)

Edgar Del Carpio

Papers

Stability of water–Boscan crude oil emulsions: Effect of salts, alcohols and glycols

Stability of nickel(II) binary and ternary complexes with dipicolinic acid and the amino acids serine, threonine, methionine and phenylalanine

Solution equilibria and stabilities of binary and ternary Nickel(II) complexes with picolinic acid and small blood serum bioligands

Solution Equilibria and Stabilities of Binary and Ternary Systems of Nickel(II) Complexes with Dipicolinic Acid and the Amino Acids (Histidine, Cysteine, Aspartic and Glutamic Acids)

Stability constants of the ternary nickel(II) complexes with salicylic acid and selected amino acids