Cobalt and copper ions synergistically enhanced photochemical vapor generation of molybdenum: mechanism study and analysis of water samples.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "Cobalt and copper ions synergistically enhanced photochemical vapor generation of molybdenum: mechanism study and analysis of water samples."

Herein, we report a discovery that photochemical vapor generation (PCVG) of molybdenum (Mo) can be synergistically enhanced dramatically by cobalt and copper ions sourced from acetates in the medium of formic acid utilizing a flow-through reactor. The nature of this new PCVG was for the first time probed by electron paramagnetic resonance (EPR) spin trapping technique for its possible reaction mechanism. Carboxyl and hydroxyl free radicals were verified during PCVG processes, and results indicate that variations in the relative amounts and proportions of free radical species may account for the synergistic effect from concomitant Co2+ and Cu2+, as well as the generation of molybdenum hexacarbonyl from the UV-induced photolysis of formic acid. Under "dry" plasma conditions, the simultaneous spiking of Co2+ and Cu2+ to 20% (v/v) formic acid solutions and a 60 s irradiation time could give rise to a 15-fold enhancement in signal intensities, together with a blank-limited but still impressive limit of detection of 6 ng L-1 (6 ppt) by inductively coupled plasma mass spectrometry (ICP-MS). The accuracy and reliability of this methodology was validated by analysis of molybdenum in a seawater certified reference material, CASS-6, as well as two varieties of drinking water and seawater samples, with satisfactory spike recoveries (91-101%).


Journal Details

This article was published in the following journal.

Name: Analytical chemistry
ISSN: 1520-6882


DeepDyve research library

PubMed Articles [11677 Associated PubMed Articles listed on BioPortfolio]

High copper and UVR synergistically reduce the photochemical activity in the marine diatom Skeletonema costatum.

Many coastal waters are threatened by heavy metal pollution, of which copper (Cu) is one of the most common contaminants. Since surface waters in marine environments and ecosystems contaminated with h...

Ionic cobalt but not metal particles induces ROS generation in immune cells in vitro.

Total joint replacement is one of the most successful procedures in orthopedic surgery today. However, metal implant materials undergo wear and corrosion processes. Generated particles and ions can ca...

Investigating the effect of copper and magnesium ions on nitrogen removal capacity of pure cultures by modified non-competitive inhibition model.

Copper, a common heavy metal, may be beneficial for or poisonous to microbial activity. The objective of this study was to determine the effect of different copper ion concentrations on the nitrogen r...

A copper(II)/cobalt(II) organic gel with enhanced peroxidase-like activity for fluorometric determination of hydrogen peroxide and glucose.

A bimetallic organic gel was prepared by mixing the bridging ligand 2,4,6-tri(4-carboxyphenyl)-1,3,5-triazine with Cu(II) and Co(II) ions at room temperature. The resulting metal-organic gel (MOG) sho...

Photochemical activation of seemingly inert SO in specific water environments.

Sulfate ions (SO) are ubiquitous in aqueous environments and are generally considered to be inert due to their chemical stability. For the first time, we found that SO can be activated into SO-type ra...

Clinical Trials [2588 Associated Clinical Trials listed on BioPortfolio]

Metal Ion Levels in Stryker Trident II Tritanium System With Modular Dual Mobility (MDM) Liner, Ceramic Head, and SecurFit Advanced Stems

Metal Ions levels of cobalt, chromium, and titanium in 40 patients preoperatively and at least 1 year status post total hip replacement with the Trident II Tritatnium system using an MDM l...

Serum Metal Ion Concentration After Total Knee Arthroplasty (TKA)

All metal implants release metal ions because of corrosion. Total knee arthroplasty implants have large metal surface areas and therefore substantial potential for corrosion. It is planned...

A Phase Ib Study of Intravenous Copper Loading With Oral Disulfiram in Metastatic, Castration Resistant Prostate Cancer

The purpose of this study is to determine the safety and optimal dosing of intravenous copper chloride and disulfiram in men with metastatic castrate-resistant prostate cancer (CRPC). Elig...

Immediate vs. Delayed Insertion of Copper T 380A IUD After Termination of Pregnancy Over 12-Weeks Gestation

The purpose of this study is to compare delayed vs. immediate insertion of the Copper T 380 IUD after termination of pregnancy after 12 weeks.

Human Biomarkers for Assessing Copper Deficiency

Copper is an essential nutrient for humans and is cofactor in enzymes that participate in critical body functions. Insufficient copper can lead to hematological and neurological abnormali...

Medical and Biotech [MESH] Definitions

P-type ATPases which transport copper ions across membranes in prokaryotic and eukaryotic cells. They possess a conserved CYSTEINE-HISTIDINE-SERINE (CPx) amino acid motif within their transmembrane helices that functions in cation translocation and catalytic activation, and an N-terminal copper-binding CxxC motif that regulates enzyme activity. They play essential roles in intracellular copper homeostasis through regulating the uptake, efflux and storage of copper ions, and in cuproprotein biosynthesis.

Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope.

Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.

Unstable isotopes of copper that decay or disintegrate emitting radiation. Cu atoms with atomic weights 58-62, 64, and 66-68 are radioactive copper isotopes.

Disinfectant used in vapor form to sterilize vaccines, grafts, etc. The vapor is very irritating and the liquid form is carcinogenic.

Quick Search


DeepDyve research library

Relevant Topics

Blood is a specialized bodily fluid that delivers necessary substances to the body's cells (in animals) – such as nutrients and oxygen – and transports waste products away from those same cells.  In vertebrates, it is composed of blo...

Multiple Sclerosis MS
Multiple sclerosis (MS) is the most common disabling neurological condition affecting 100,000 young adults in the UK. The condition results from autoimmune damage to myelin, causing interference in nerve signaling. Symptoms experienced depend on the pa...

Searches Linking to this Article