Determination of total and inorganic mercury in whole blood by cold vapor inductively coupled plasma mass spectrometry (CV ICP-MS) with alkaline sample preparation

2009 ◽  
Vol 24 (10) ◽  
pp. 1414 ◽  
Author(s):  
Jairo L. Rodrigues ◽  
Daiane P. Torres ◽  
Vanessa C. de Oliveira Souza ◽  
Bruno L. Batista ◽  
Samuel S. de Souza ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Whole Blood ◽  
Inductively Coupled Plasma ◽  
Inorganic Mercury ◽  
Cold Vapor ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Determination of Arsenic, Chromium, Lead, Manganese, and Mercury in Certifiable Color Additives by Inductively Coupled Plasma/Mass Spectrometry

2015 ◽  
Vol 98 (1) ◽  
pp. 160-164 ◽  
Author(s):  
Nancy Morris Hepp
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Quantitative Determination ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Microwave Assisted Digestion

Abstract Specifications in the Code of Federal Regulationslimit the levels of As, Pb, and Hg in most certifiable color additives, and some have additional specification limits for Cr and Mn. A new ICP/MS method wasdeveloped and validated for the quantitative determination of these elements in various certifiable color additives. One dissolution and two microwave-assisted digestion sample preparation procedures were optimized to address initial low Hg and enhanced As recoveries. Results using the three sample preparation procedures were generally equivalent for all of the elements determined. LOQ values were 0.3 mg/kg for As, 0.7 mg/kg for Cr, 0.4 mg/kg for Pb, 0.7 mg/kg forMn, and 0.1 mg/kg for Hg.

scholarly journals Determination of Halogens by Ion Chromatography in Edible Mushrooms after Microwave-Induced Combustion for Sample Preparation

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Gilberto Silva Coelho Junior ◽  
Filipe Soares Rondan ◽  
Carla Andrade Hartwig ◽  
Rafael Francisco Santos ◽  
Paola Azevedo Mello ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Ion Chromatography ◽  
Inductively Coupled Plasma ◽  
Mushroom Species ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Standard Solution

In this study, the microwave-induced combustion (MIC) method was evaluated for the sample preparation of the most consumed mushroom species in Brazil (Champignon, Shiitake, and Shimeji) and further halogen determination by ion chromatography (IC). For this, sample mass, combustion aid mass, and absorbing solution (H2O and 50 mmol·L−1, 100 mmol·L−1, or 150 mmol·L−1 NH4OH) were evaluated. Bromine and iodine concentrations, determined by IC, were lower than the limits of detection (LODs, Br: 6 mg·kg−1 and I: 24 mg·kg−1). Inductively coupled plasma mass spectrometry (ICP-MS) was also used for Br and I determination, and the LODs were lower (Br: 0.066 mg·kg−1 and I: 0.014 mg·kg−1) than those obtained by IC. Concentrations of Cl, obtained by IC, ranged from 523 mg·kg−1 to 13053 mg·kg−1 with LOD of 40 mg·kg−1. In turn, Br and I concentrations, obtained by ICP-MS, ranged from 2.49 mg·kg−1 to 5.50 mg·kg−1 and from <0.014 mg·kg−1 to 0.047 mg·kg−1, respectively. Fluorine concentrations, determined by IC, were always lower than LOD (23 mg·kg−1). The trueness of the proposed methods was evaluated by recovery tests using standard solutions and a reference material (RM NIST 8435). When using the standard solution, recoveries ranged from 95% to 103% for halogen determination by IC and from 105% to 109% for Br and I determination by ICP-MS. When using the RM, recoveries of 102% for Cl by IC and of 87% and 86% for Br and I by ICP-MS, respectively, were obtained.

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