Field analysis Cr(VI) in water samples by a smartphone-based ultralong absorption path reflection colorimetric device

2021 ◽  
Author(s):  
Xiaolan Chen ◽  
Cheng Ma ◽  
Qi Kang ◽  
Yu-Qin Chen ◽  
Dazhong Shen
Keyword(s):  
Hexavalent Chromium ◽  
Water Samples ◽  
Environmental Samples ◽  
Field Analysis ◽  
Absorption Path

Hexavalent chromium is highly toxic and regarded as one of the main pollutants in environmental samples. Sophisticated laboratory instruments are commercially available for in-field determination of chromium. It is highly...

Deconvolution of alpha liquid scintillation spectra for quantitative analysis of actinide elements in water samples

2004 ◽  
Vol 92 (3) ◽  
Author(s):  
Jean Aupiais
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Environmental Samples ◽  
Liquid Scintillation ◽  
Isotopic Ratio ◽  
Ratio Determination ◽  
Alpha Beta ◽  
Uranium Plutonium ◽  
Actinide Elements

SummaryThe reliability and accuracy of actinide measurement in environmental samples strongly depend on theThe intensity of the internal conversions for thorium, uranium, plutonium and americium have been calculated and normalised to the intensity of the main alpha transition. These data can be used to determine the activity of any above-mentioned actinide by alpha liquid scintillation with alpha/beta discrimination. The quantitative analysis and the isotopic ratio determination of several certified solutions of actinides demonstrate the validity of this approach.

scholarly journals The determination of titanium contained in Tytanit biostimulant employed to improve crops performance in natural environmental samples

2017 ◽  
Vol 71 (2) ◽  
pp. 115
Author(s):  
Joanna Wasąg ◽  
Malgorzata Grabarczyk
Keyword(s):  
Natural Water ◽  
Water Samples ◽  
Environmental Samples ◽  
Stripping Voltammetry ◽  
Environmental Water ◽  
Adsorptive Stripping Voltammetry ◽  
Environmental Water Samples ◽  
Chloranilic Acid ◽  
Titanium Complex

<p>The purpose of this work was to determinate the amount of titanium in different environmental water samples spiked with crop biostimulant Tytanit. The measurements were conducted using adsorptive stripping voltammetry (AdSV). The titanium complex with chloranilic acid was accumulated on mercury film silver based electrode (Hg(Ag)FE) at the potential -0.3 V. The analysis of natural water samples enriched with Tytanit, collected in the eastern part ofPolandconfirms that this procedure is fast and essential for the determination of titanium in environmental water samples.</p>

Multi-response optimization followed by multivariate calibration for simultaneous determination of carcinogenic polycyclic aromatic hydrocarbons in environmental samples using gold nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104254-104264 ◽  
Author(s):  
Mahsa Rezaiyan ◽  
Hadi Parastar ◽  
M. Reza Hormozi-Nezhad
Keyword(s):  
Gold Nanoparticles ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Simultaneous Determination ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Environmental Samples ◽  
Multivariate Calibration ◽  
Polycyclic Aromatic ◽  
Response Optimization

A multivariate-based strategy was developed for simultaneous determination of thirteen carcinogenic PAHs in water samples using AuNPs.

scholarly journals Determination of Phenolic Xenoestrogens in Environmental Samples by Liquid Chromatography with Mass Spectrometric Detection

2001 ◽  
Vol 84 (4) ◽  
pp. 1074-1086 ◽  
Author(s):  
Mira Petrović ◽  
Damià Barceló
Keyword(s):  
Water Samples ◽  
Environmental Samples ◽  
Municipal Wastewater ◽  
Solid Phase ◽  
Atmospheric Pressure Chemical Ionization ◽  
Endocrine Disrupting Compounds ◽  
Mass Spectrometric ◽  
Mass Spectrometric Detection ◽  
Solid Samples

Abstract A method is proposed for the determination of several phenolic xenoestrogens in aqueous and solid environmental samples. The method uses solid-phase extraction (preceded by ultrasonic solvent extraction for solid samples), reversed-phase liquid chromatographic separation, and mass spectrometric detection using both atmospheric pressure chemical ionization and electrospray ionization. This method was developed to support several studies undertaken to obtain aquatic and sedimentary data for rivers and seashores in Spain that are likely to be contaminated by endocrine-disrupting compounds (EDCs) as a consequence of wastewater discharge. Nonylphenol polyethoxylates (NPEOs), nonylphenoxy carboxylates (NPECs), nonylphenol (NP), octylphenol (OP), and bisphenol A (BPA) were determined in various samples of surface water and sediment, collected at different locations upstream and downstream from outfalls of municipal wastewater treatment plants (WWTPs). Seawater and marine sediments were collected in different harbor areas in Spain. Additionally, WWTP influent and effluents were analyzed to monitor the occurrence and transformation of phenolic EDCs during physicochemical and biological treatment. Rather high concentrations of the compounds investigated were found in some samples. Concentrations of NP were ≤590 μg/kg in sediments and ≤15 μg/L in water samples. NPEOs and NPECs were found in water samples in concentrations ≤41 and ≤35 μg/L, respectively. In solid samples (river sediment), concentrations of NPEO were ≤818 μg/kg and those of NP1EC were 95 μg/kg.

Colorimetric determination of nitrite in clinical, food and environmental samples using microfluidic devices stamped in paper platforms

2015 ◽  
Vol 7 (17) ◽  
pp. 7311-7317 ◽  
Author(s):  
Thiago M. G. Cardoso ◽  
Paulo T. Garcia ◽  
Wendell K. T. Coltro
Keyword(s):  
River Water ◽  
Water Samples ◽  
Environmental Samples ◽  
Statistical Difference ◽  
Reference Method ◽  
Microfluidic Devices ◽  
Colorimetric Determination ◽  
River Water Samples ◽  
Paper Microfluidic

Paper microfluidic devices were explored to perform the colorimetric determination of nitrite in saliva, sausage, ham, preservative water and river water samples with no statistical difference from a reference method.

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