scholarly journals INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRIC DETERMINATION OF URANIUM AND THORIUM IN HIGH PURITY TUNGSTEN AFTER ION EXCHANGE SEPARATION

1991 ◽  
Vol 7 (Supple) ◽  
pp. 1359-1362
Author(s):  
KI-JUNG PAENG ◽  
DONG SOO LEE ◽  
YONG-KEUN LEE
Keyword(s):  
Ion Exchange ◽  
High Purity ◽  
Inductively Coupled Plasma ◽  
Mass Spectrometric ◽  
Inductively Coupled ◽  
Mass Spectrometric Determination ◽  
Ion Exchange Separation

Selective Precipitation Separation and Inductively Coupled Plasma Mass Spectrometric Determination of Trace Metal Impurities in High Purity Silver

The Analyst ◽  
1997 ◽  
Vol 122 (5) ◽  
pp. 437 ◽  
Author(s):  
Yuh-Chang Sun ◽  
Jerzy Mierzwa ◽  
Chien-Feng Lin ◽  
T. I. Yeh ◽  
Mo-Hsiung Yang
Keyword(s):  
Trace Metal ◽  
High Purity ◽  
Inductively Coupled Plasma ◽  
Mass Spectrometric ◽  
Selective Precipitation ◽  
Inductively Coupled ◽  
Mass Spectrometric Determination ◽  
Metal Impurities

scholarly journals Inductively Coupled Plasma Collision Cell Quadrupole Mass Spectrometric Determination of Extractible Arsenic, Cadmium, Chromium, Lead, Mercury, and Other Elements in Food Using Microwave-Assisted Digestion: Results from an FDA Interlaboratory Study

2019 ◽  
Vol 102 (2) ◽  
pp. 590-604 ◽  
Author(s):  
Patrick J Gray ◽  
William Cunningham
Keyword(s):  
Inductively Coupled Plasma ◽  
Mass Spectrometric ◽  
Interlaboratory Study ◽  
Standard Reference Materials ◽  
Inductively Coupled ◽  
Microwave Assisted ◽  
Mass Spectrometric Determination ◽  
Microwave Assisted Digestion ◽  
Better Than

Abstract Background: An interlaboratory study was conducted to test U.S. Food and Drug Administration (FDA) Elemental Analysis Manual (EAM) Method 4.7, “Inductively Coupled Plasma-Mass Spectrometric Determination of Arsenic, Cadmium, Chromium, Lead, Mercury, and Other Elements in Food Using Microwave Assisted Digestion.” Objective: The goal of the study was to demonstrate the performance of FDA EAM Method 4.7. Methods: Fourteen laboratories participated in the collaborative study, including nine Food Emergency Response Network state laboratories and five federal FDA laboratories. Laboratories tested 8 labeled standard reference materials and 12 blinded foods: mayonnaise, dark chocolate, sunflowerseeds, hamburger with cheese, brown rice flour (blinded reference material included as a test food), infant formula, canned smoked oysters, sardines in tomato paste, swordfish, mineral water, cinnamon, and a multivitamin. The blinded test foods represented every sector of the AOAC food triangle. Participants measured the mass fraction of each element in each sample in triplicate. Results:Horwitz Ratio (HorRat) values were better than 1.5 for all As, Cd, Cu, Hg, Mo, Ni, Pb,and Se measurements when at least eight laboratories reported results greater than LOQ. The HorRat values were better than 1.5 for all Mn and Zn measurements except for the multivitamin and for all Cr measurements exceptfor sunflower seeds, in which the nonhomogeneity was identified. The average HorRat value of the blinded test foods was 0.66 for results greater than LOQ(n = 4206). Conclusions: The study showed that the method performed satisfactorily as a standard method for extractibleelemental analysis of food. Highlights: The method met or exceeded the performance expected.

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