Suspended particulate matter in the Gulf of Oman: Spatial variations in concentration, bulk composition, and particulate metals controlled by physical and biogeochemical processes.

The present work aims to assess the biogeochemical and physical sources of variation in the spatial distribution of suspended particulate matter (SPM), its major biotic and abiotic components, particulate metals, and the Redfield (N:P) stoichiometry of particles in a poorly understood basin of the Gulf of Oman. Particulate samples were collected in February 2022 from the Gulf of Oman aboard the R/V Persian Gulf Explorer, revealing surface SPM concentrations ranging from 140 to 1145 μg/l. The elemental composition of crustal-type elements in the surface offshore region confirmed the input of lithogenic components by aeolian dust from the surrounding deserts.

Phallusia nigra-mediated vanadium removal from brine: Assessment and optimization.

The rejected brines from desalination plants contain significant amounts of heavy metals. In this study, we evaluated the effectiveness of Phallusia nigra Savigny, 1816 (P. nigra) in removing vanadium from the rejected brines of desalination plants through the bioaccumulation process.

Spatial and seasonal variations in suspended particulate matter concentration and composition in the Persian Gulf: From dust deposition and sediment resuspension to biological production in the regulation of the particulate trace elements.

The present document is intended to fill the knowledge gap on spatiotemporal variation of suspended particulate matter (SPM) concentration and composition by collecting samples from 26 stations during two contrasting seasons of summer and winter. The horizontal distribution of surface SPM is characterized by hotspots (up to 4.0 mg/l) along the river estuaries which sharply declined to <1 mg/l in the offshore region.

Microplastic occurrence in finfish and shellfish from the mangroves of the northern Gulf of Oman.

This study was conducted to assess microplastic (MP) pollution in some aquatic animals inhabiting planted and natural mangrove swamps in the northern Gulf of Oman. The KOH-NaI solution was used to retrieve MPs from the gastrointestinal tracts of animals. The highest MP prevalence was recorded in crabs (41.

Seasonal variations, potential bioavailability, and ecological risk of phosphorus species in the coastal sediments of the Makran.

Eutrophication and algal blooms occur frequently in coastal waters of the Makran, for which phosphorus is an important driving factor. Therefore, in this study, sequential extraction procedure was used to evaluate abundance of five phosphorus chemical species. Total phosphorus (TP) concentration ranged from 672.

Hypoxia in the Persian Gulf and the Strait of Hormuz.

In this article dissolved oxygen results of research cruises through the Persian Gulf during 2018-2019 are discussed. The results showed that summer to autumn hypoxia occurred mainly at depths ≥ 50 m to the bottom. This seasonal hypoxia started in late summer reaching its greatest severity in mid-autumn with an area of 50,000 km in the Persian Gulf.

Microplastic pollution in the littoral sediments of the northern part of the Oman Sea.

Microplastics (MPs) have been increasingly detected as environmental pollutants in the marine systems. Currently, there is no information about the microplastic pollution in the littoral sediments of the northern Oman Sea, and this problem was addressed in the present study for the first time. Sediment samples were collected at eight sampling stations.

Highly sensitive colorimetric determination of amoxicillin in pharmaceutical formulations based on induced aggregation of gold nanoparticles.

A novel, simple and highly sensitive colorimetric method is developed for determination of Amoxicillin (AMX). The system is based on aggregation of citrate-capped gold nanoparticles (AuNP) in acetate buffer (pH=4.5) in the presence of the degradation product of Amoxicillin (DPAMX).

Development of a sensitive and selective Riboflavin sensor based on carbon ionic liquid electrode.

The electrochemical properties of Riboflavin adsorbed on carbon ionic liquid electrode (CILE) were studied by cyclic voltammetry. A film with a surface coverage of up to 3.3x10(-9) mol cm(-2) was formed after 10 min exposure time.