Results 141 to 150 of about 175,080 (313)

Evaluation of the concentration of heavy metals (copper, lead and arsenic) in Lahijan tea and Indian tea

open access: green
-, -   +2 more
openalex   +1 more source

Metals' Adsorption Onto Environmental Microplastics at Shoreline Sediments

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT This study assessed trace element concentrations and microplastic (MP) contamination in three sandy beaches on the southern coast of Ilha Grande (Rio de Janeiro, Brazil). Environmental MPs were manually extracted from sand samples, and beaches were classified using the microplastic pollution index (MPPI).
Adriana F. Curty   +4 more
wiley   +1 more source

A New Thallide Auride Double Salt: Cs3.4K4.6[Au][Tl7] Featuring [Tl7]7– Zintl Clusters

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
Single crystal X‐ray structure analysis and band structure calculations of the electron precise alkali metal‐thallide‐auride double salt Cs3.4K4.6[Tl7][Au], including [Tl7]7– and [Au]– anionic moieties. Cs3.4K4.6[Au][Tl7] has been prepared from the elements (Pnma, a = 39.6898(12) Å, b = 12.0407(4) Å, c = 10.9334(3) Å, V = 5225.0(3) Å3, Z = 8, R1/wR2 ...
Vanessa F. Schwinghammer   +1 more
wiley   +1 more source

Simultaneous Formation of Arsenic Nitride Chalcogenides As3NS3 and As3NSe3 and Arsenic–Chalcogen Zintl Anions by Ammonothermal Reactions

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
Mn, As, and S or Se react in liquid NH3 to the Zintl ions (As4S6)2– and (As2Se6)2–. Simultaneously, the arsenic nitride chalcogenides As3NS3 and As3NSe3 are formed. Their isotypic structures contain planar trigonal NAs3 groups connected via chalcogen bridges to 1D‐strands forming channels that can host solvent molecules.
Frederik Hermann   +4 more
wiley   +1 more source

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