Mercury speciation in whole blood by gas chromatography coupled to ICP-MS with a fast microwave-assisted sample preparation procedure

2011 ◽  
Vol 26 (2) ◽  
pp. 436-442 ◽  
Author(s):  
Jairo L. Rodrigues ◽  
Carolina Rodríguez Alvarez ◽  
Nuria Rodríguez Fariñas ◽  
Juan J. Berzas Nevado ◽  
Fernando Barbosa Jr ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Sample Preparation ◽  
Whole Blood ◽  
Mercury Speciation ◽  
Preparation Procedure ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Sample Preparation Procedure

Experimental design for metal extraction from facial cosmetics samples and determination by square wave voltammetry

2018 ◽  
Vol 10 (44) ◽  
pp. 5327-5334 ◽  
Author(s):  
Lucas Vinicius de Faria ◽  
Thalles Pedrosa Lisboa ◽  
Rafael Arromba de Sousa ◽  
Gustavo Senra Gonçalves de Carvalho ◽  
Maria Auxiliadora Costa Matos ◽  
...  
Keyword(s):  
Experimental Design ◽  
Sample Preparation ◽  
Square Wave Voltammetry ◽  
Metal Extraction ◽  
Preparation Procedure ◽  
Square Wave ◽  
Microwave Assisted ◽  
Wave Voltammetry ◽  
Sample Preparation Procedure ◽  
Extraction Of Metals

An alternative microwave-assisted sample preparation procedure is proposed for the rapid, reliable and easy extraction of metals from facial cosmetics samples.

Rapid sample preparation procedure for As speciation in food samples by LC-ICP-MS

2012 ◽  
Vol 29 (5) ◽  
pp. 780-788 ◽  
Author(s):  
B.L. Batista ◽  
L.R. Nacano ◽  
S.S. De Souza ◽  
F. Barbosa
Keyword(s):  
Sample Preparation ◽  
Food Samples ◽  
Preparation Procedure ◽  
Icp Ms ◽  
Sample Preparation Procedure

Supernatant Decanting on a Centrifugal Platform

2009 ◽  
Vol 74 ◽  
pp. 161-164
Author(s):  
Chih Hsin Shih ◽  
Wei Li Yuan ◽  
Chien Hsing Lu ◽  
Wei Ling Chiang
Keyword(s):  
Sample Preparation ◽  
Elastic Deformation ◽  
Whole Blood ◽  
Preparation Procedure ◽  
Manufacturing Cost ◽  
Novel Approach ◽  
Detection Chamber ◽  
Sample Preparation Procedure

This work presents a novel approach to decant and meter supernatant on a centrifugal platform. Supernatant decanting, such as decanting plasma from the centrifuged whole blood, is an important sample preparation procedure for the whole blood bioassays. By manipulating the centrifugally induced pressure and the elastic deformation of the chamber’s plastic lid, fixed amounts of the supernatant can be decanted into the detection chamber. This approach has the advantages of low manufacturing cost and ease of operation.

scholarly journals Determination of Two Oxy-Pyrimidine Metabolites of Diazinon in Urine by Gas Chromatography/Mass Selective Detection and Liquid Chromatography/Electrospray Ionization/Mass Spectrometry/Mass Spectrometry

2000 ◽  
Vol 83 (5) ◽  
pp. 1229-1238 ◽  
Author(s):  
Robert A Yokley ◽  
Nanzhu Shen ◽  
Max W Cheung
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Sample Preparation ◽  
Preparation Procedure ◽  
Ionization Mass ◽  
Selective Detection ◽  
Esi Ms ◽  
Sample Preparation Procedure ◽  
Mass Spectrometry Mass Spectrometry

Abstract An analytical method was developed for the determination in urine of 2 metabolites of diazinon: 6-methyl-2-(1-methylethyl)-4(1H)-pyrimidinone (G-27550) and 2-(1-hydroxy-1-methylethyl)-6-methyl-4(1H)-pyrimidinone (GS-31144). Two of the urine sample preparation procedures presented rely on gas chromatography/mass selective detection (GC/MSD) in the selected ion monitoring mode for determination of G-27550. For fast sample preparation and a limit of quantitation (LOQ) of 1.0 ppb, urine samples were purified by using ENV+ solid-phase extraction (SPE) columns. For analyte confirmation at an LOQ of 0.50 ppb, classical liquid/liquid partitioning was used before further purification in a silica SPE column. An SPE sample preparation procedure and liquid chromatography/electrospray ionization/mass spectrometry/mass spectrometry (LC/ESI/MS/MS) were used for both G-27550 and GS-31144. The limit of detection was 0.01 ng for G-27550 with GC/MSD, and 0.016 ng when LC/ESI/MS/MS was used for both G-27550 and GS-31144. The LOQ was 0.50 ppb for G-27550 when GC/MSD and the partitioning/SPE sample preparation procedure were used, and 1.0 ppb for the SPE only sample preparation procedure. The LOQ was 1.0 ppb for both analytes when LC/ESI/MS/MS was used.

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