A green analytical method for ultratrace determination of hexavalent chromium ions based on micro-solid phase extraction using amino-silanized cellulose membranes

2019 ◽  
Vol 149 ◽  
pp. 104060 ◽  
Author(s):  
Ewa Jamroz ◽  
Karina Kocot ◽  
Beata Zawisza ◽  
Ewa Talik ◽  
Anna Gagor ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Hexavalent Chromium ◽  
Analytical Method ◽  
Solid Phase ◽  
Phase Extraction ◽  
Chromium Ions ◽  
Cellulose Membranes

Development of an analytical method for the determination of N-nitrosamines in tobacco by GC-NCD after solid phase extraction

2017 ◽  
Vol 9 (15) ◽  
pp. 2284-2289 ◽  
Author(s):  
F. A. Soares ◽  
S. C. Chiapetta ◽  
W. F. Pacheco
Keyword(s):  
Solid Phase Extraction ◽  
Analytical Method ◽  
Rio De Janeiro ◽  
Solid Phase ◽  
Phase Extraction ◽  
The City

In this paper an analytical method was developed for the determination of some tobacco specific N-nitrosamines (TSNAs) in cigarettes, and applied to cigarettes purchased in the city of Rio de Janeiro/RJ (Brazil).

Packed-nanofiber solid phase extraction coupled with HPLC for the determination of chloramphenicol in milk

2017 ◽  
Vol 9 (46) ◽  
pp. 6499-6506 ◽  
Author(s):  
Lanling Chu ◽  
Jianjun Deng ◽  
Xuejun Kang
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Analytical Method ◽  
High Performance ◽  
Solid Phase ◽  
Phase Extraction

A sensitive analytical method based on packed-nanofiber solid phase extraction (PFSPE) and high performance liquid chromatography (HPLC) has been developed for determining chloramphenicol (CAP) in milk.

scholarly journals Development and optimization of analytical method for the determination of cadmium from mineral water samples by off-line solid phase extraction system using sisal fiber loaded TAR by FAAS

2013 ◽  
Vol 106 ◽  
pp. 363-367 ◽  
Author(s):  
Fábio de Souza Dias ◽  
Josemário Santana Bonsucesso ◽  
Lucylia Suzart Alves ◽  
Domingos Correia da Silva Filho ◽  
Antonio Celso Spínola Costa ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Analytical Method ◽  
Mineral Water ◽  
Solid Phase ◽  
Extraction System ◽  
Sisal Fiber ◽  
Phase Extraction

scholarly journals Ultratrace-level determination of N-Nitrosodimethylamine, N-Nitrosodiethylamine, and N-Nitrosomorpholine in waters by solid-phase extraction followed by liquid chromatography-tandem mass spectrometry

2014 ◽  
Vol 12 (9) ◽  
pp. 928-936 ◽  
Author(s):  
Yassine Kadmi ◽  
Lidia Favier ◽  
Isabelle Soutrel ◽  
Marguerite Lemasle ◽  
Dominique Wolbert
Keyword(s):  
Mass Spectrometry ◽  
Drinking Water ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Solid Phase Extraction ◽  
Analytical Method ◽  
Solid Phase ◽  
Tandem Mass ◽  
Phase Extraction

AbstractN-nitrosamines are a new class of emerging nitrogenous drinking water disinfection by-products. These compounds are probably carcinogenic which could seriously affect the safety of drinking water consumers. The aim of this study is to develop a simple, fast, and specific analytical method for the routine determination of low part per trillion levels of N-nitrosamines in waters. An ultra high pressure liquid chromatography coupled with tandem mass spectrometry (UHPLC/MS/MS) method was developed for the qualitative and quantitative analysis of N-nitrosamines in waters. N-nitrosamines were extracted, purified and concentrated from water samples in one step using a solid-phase extraction (SPE). The compounds were detected in multiple reaction monitoring via electrospray ionisation source with positive ionisation mode. To achieve symmetrical peak shapes and a short chromatographic analysis time, the mobile phase consisting of acetonitrile, water and formic acid (60:40:0.1, v/v/v) was used in the experiment. Chromatographic separation of N-nitrosamines was done in less than two minutes. All calibration curves had good linearity (r2≥ 0.9989). The intra- and inter-day precision of the assay ranged from 0.59% to 3.11% and accuracy ranged from 99.66% to 104.1%. The mean recoveries of N-nitrosamines in spiked water were 98%-101%. The reproducability was acceptable with relative standard deviations of less than 3.53%. The proposed method yielded detection limits very low which ranges from 0.04 to 0.16 ng L−1. Finally, the developed analytical method was successfully applied to the analysis of N-nitrosamines in natural water sample

scholarly journals Synthesis of sulfonated crosslinked polystyrene applied to the determination of aromatic amines derived from azo dyes in textile

2018 ◽  
Vol 1 (T5) ◽  
pp. 158-166
Author(s):  
Phu Hoang Nguyen ◽  
Huong Thu Nguyen ◽  
Mai Anh Nguyen
Keyword(s):  
Experimental Design ◽  
Solid Phase Extraction ◽  
Azo Dyes ◽  
Analytical Method ◽  
Aromatic Amines ◽  
Solid Phase ◽  
Phase Extraction ◽  
Standard Methods ◽  
Crosslinked Polystyrene

Sulfonated microphere material based on crosslinked polystyrene was synthesized by emulsification polymerization, the polymerization yield was of 75 % ± 5 % and the size of microspheres was ranging from 30–180 µm. In order to obtain the suitable capacity for the enrichment of aromatic amines (1.0 meqv/g) the condition for sulfonation process were derived from the model based on an experimental design. The products were used as a stationary phase in solid phase extraction (SPE) to enrich 18 aromatic amines derived from banned azo dyes in textile. In this study, an analytical method has been developed, with LOQ of 2 ppm. The correlation coefficient R2 of the cabliration curve was ≥ 0.9997, most of the aromatic amines had the recoveries > 80 % and RSD < 5 %. In addition, a comparison between obtained results by the developed method and those by international standard methods BS EN 14326-1: 2012 and BS EN 14326-3:2012, was also done.

An analytical method for the determination of perfluorinated compounds in whole blood using acetonitrile and solid phase extraction methods

2009 ◽  
Vol 1216 (25) ◽  
pp. 4950-4956 ◽  
Author(s):  
Leo W.Y. Yeung ◽  
Sachi Taniyasu ◽  
Kurunthachalam Kannan ◽  
Della Z.Y. Xu ◽  
Keerthi S. Guruge ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Analytical Method ◽  
Whole Blood ◽  
Solid Phase ◽  
Extraction Methods ◽  
Perfluorinated Compounds ◽  
Phase Extraction
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