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On the Brazilian equatorial frontier, this research investigated metal contamination in surface sediments and macroalgae of mangroves and port complexes. Samples were collected between August 2020 and February 2021 at seven points in a mangrove swamp under the influence of port operation and at two points without port service at seven locations in a mangrove swamp under the influence of port activity, and at two other locations without port operation. At most collection points, the metals in the sediment were found in the order Fe > Mn > Cr > Cu > Pb. The order Bostrychia radicans and Rhizoclonium africanum was followed by a bioaccumulation pattern of metals in the most abundant macroalgal species.
Source link: https://europepmc.org/article/PPR/PPR495757
Hence, a good CO 2 management plan, which includes correct CO 2 capture, use, and storage, has become a top issue globally. Hence, the concerted attempt to close the void between CO 2 management and methanol/formic acid production by using CO 2 as a C 1 -synthon. CO 2 hydrogenation to methanol and formic acid has emerged as one of the key routes for chemically converting CO 2 to a substantial amount of methanol and formate, which is often catalyzed by transition metal complexes.
Source link: https://europepmc.org/article/MED/35587113
A new DNA biosensor was built using this complicated, and in this work, a new Tb complex of TbCl 3 was used as an electrochemical probe for DNA-metal interaction. The interaction of Tb 3 with double-stranded DNA was investigated by Cyclic voltammetry and differential pulse voltammetry. The degree of hybridization was determined on the basis of the difference between Tb 3's signals and probe DNA before and after hybridization with complementary DNA. The interaction between Tb 3 and DNA was found to be mainly intercalative.
Source link: https://europepmc.org/article/MED/35597268
We describe the simple synthesis of TMCs/N-doping carbon aerogels for the oxygen reduction reaction using protonated chitosan/metal complex anion-chelated aerogels in this work. The Fe 3 C/NCA composite has effective ORR capability, among others, and the Fe 3 C/NCA-assembled Zn-air battery exhibits high power densities of about 250 mW cm -2.
Source link: https://europepmc.org/article/MED/35507679
Proton-coupled electron transport of metal complexes has been extensively investigated, particularly in biochemistry and catalytic chemistry. [Ni 2 ] 2- ] 2 : Theoretical studies showed that the stability of frontier orbitals by protonation is higher in Ni 2 than that in [Ni 2 ] 2-. These results show that -planar metal complexes with redox-active ligands are promising for the creation of novel PCET-type materials.
Source link: https://europepmc.org/article/MED/35470543
The complexation of L-tyrosine with common metal ions was investigated in this paper, as well as the effect of complexation on chlorination with various experimental factors. In a ratio of 2:1, it was speculated that L-tyrosine complexed with metal ions by single dentate ligand or double dentate chelation. The effect of metal complexation on chlorination was more apparent than that of metal coexistence. Mn 2+ > Fe 3+ > Ca 2+, according to the order of limitation on trihalomethane production, it was Ca 2+ > Mn 2+ > Mn 2+ > Ca 2+. The combination of ultraviolet and chlorine disinfection promoted L-Tyrosine degradation and DBPs generation, as well as the promotion of the sale: UV/Cl 2 Cl 2.
Source link: https://europepmc.org/article/MED/35392772
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