Results 1 to 10 of about 36,252 (237)

Determination of trace copper in water samples by flame atomic absorption spectrometry after preconcentration on a phosphoric acid functionalized cotton chelator [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
This paper reports the preparation of a phosphorylated cotton chelator (PCC) by solid phase esterification of phosphoric acid (PA) onto defatted cotton fibres using urea as the catalyst. The synthesized PCC was employed for the preconcentration of copper
XINGYAN LIU   +4 more
doaj   +3 more sources

Preconcentration of Fluorescent Dyes in Electromembrane Systems via Electrophoretic Migration

open access: yesMicromachines, 2023
Microfluidic preconcentration enables the collection or extraction of low-abundance analytes at specific locations. It has attracted considerable attention as an essential technology in bioengineering, particularly for detection and diagnosis. Herein, we
Minsung Kim, Bumjoo Kim
doaj   +1 more source

Validation of Near InfraRed preconcentration strategies for ore sorting

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
The early rejection of gangue minerals, at coarse ore particles size (preconcentration), has been shown to be a viable option to cost reduction in many mineral processing applications.
S. Iyakwari   +5 more
doaj   +1 more source

Dispersive Micro-Solid Phase Extraction Using a Graphene Oxide Nanosheet with Neocuproine and Batocuproine for the Preconcentration of Traces of Metal Ions in Food Samples

open access: yesMolecules, 2023
A dispersive micro-solid phase extraction (Dµ-SPE) method for the preconcentration of trace metal ions (Pb, Cd, Cr, Mn, Fe, Co, Ni, Cu, Zn) on graphene oxide with the complexing reagents neocuproine or batocuproine is presented here.
Barbara Feist
doaj   +1 more source

Water Quality of the Trstionica River (Bosnia and Herzegovina) [PDF]

open access: yesKemija u Industriji, 2020
The present study was conducted to investigate the water quality of the Trstionica River, Bosnia and Herzegovina. The physicochemical properties (temperature, pH, conductivity, total solids after evaporation at 105 °C), content of metals (calcium (Ca ...
Šuhreta Delibašić   +3 more
doaj   +1 more source

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+1 more source

Experimental Study on the Recovery of Rare Earth from a Low Grade Rare Earth Tailings in Sichuan

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. This study focuses on a rare earth tailing in Sichuan province. Mineralogy research shows that the distribution minerals of rare earth metal composition in the tailing are relatively ...
Zheng Zhou   +5 more
doaj   +1 more source

Rapid Detection of Legionella pneumophila in Drinking Water, Based on Filter Immunoassay and Chronoamperometric Measurement

open access: yesBiosensors, 2020
Legionella is a pathogenic bacterium, ubiquitous in freshwater environments and able to colonise man-made water systems from which it can be transmitted to humans during outbreaks. The prevention of such outbreaks requires a fast, low cost, automated and
Josune J. Ezenarro   +6 more
doaj   +1 more source

Prakonsentrasi Ion Cd(II) dalam Sampel Pupuk Nitrogen, Fosfor dan Kalium (NPK) Menggunakan Alumina Teraktivasi sebagai Material Pengisi Kolom

open access: yesAlchemy, 2020
Prakonsentrasi ion Cd(II) dalam sampel pupuk nitrogen, fosfor dan kalium (NPK) menggunakan alumina teraktivasi sebagai material pengisi kolom telah dilakukan.
Lossi Hotmaida Simanjuntak   +2 more
doaj   +1 more source

Preconcentration and Determination of Paranitroaniline Using Dispersive Liquid-Liquid Microextraction in the textile waste samples [PDF]

open access: yesشیمی کاربردی روز, 2017
In this study, dispersive Liquid- Liquid microextraction (DLLME) as highly sensitive procedure was developed for preconcentration and determination of paranitroaniline in  textile industrial wastewater samples.
mohammad alimoradi   +3 more
doaj   +1 more source

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