Foodstuffs. Determination of trace elements. Determination of iodine in dietetic foods by ICP-MS (inductively coupled plasma mass spectrometry)

Abstract A joint U.S. Environmental Protection Agency (U.S. EPA)—AOAC interlaboratory method validation study was conducted on U.S. EPA method 200.8, Determination of Trace Elements in Waters and Wastes by Inductively Coupled Plasma–Mass Spectrometry. The purpose of the study was to determine and compare the mean recovery and precision of the inductively coupled plasma–mass spectrometry (ICP–MS) analyses for 20 trace elements in reagent water, drinking water, and groundwater. The formal study was based on Youden’s nonreplicate plan for collaborative tests of analytical methods. The test waters were spiked with the 20 trace elements at 6 concentration levels in the 0.8–200 μg/L range, prepared as 3 Youden pairs. Thirteen collaborators spiked 100 mL aliquots of the test waters, acidified them with 1 mL concentrated HNO3 and 0.5 mL concentrated HCl, reduced the volume to 20 mL by heating in an open beaker at 85°C, refluxed them for 30 min at 95°C, and diluted them to 50 mL. After centrifuging or settling the samples, a 20 mL portion of the supernatant was diluted to 50 mL and analyzed by ICP–MS. Related experiments evaluated the method performance in wastewater and wastewater digestate at a single concentration pair, and an alternative nitric acid digestion procedure. Mean recoveries for reagent water, drinking water, and groundwater were generally 95–105% with between-laboratory relative standard deviations about 4–8%. The method also worked well with wastewaters and digestate, with between-laboratory relative standard deviations averaging 8% and recoveries averaging 100%. Recoveries of silver, however, were low in all matrixes at concentrations over 100 μg/L. The nitric acid digestion procedure was comparable in accuracy and precision to the mixed-acid digestion in U.S. EPA method 200.8. The method was adopted first action by AOAC INTERNATIONAL.

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Alumina–titania (Al2O3–TiO2) hollow fiber sorptive microextraction coupled to inductively coupled plasma mass spectrometry for determination of trace elements in diesel and gasoline samples

RSC Advances ◽

10.1039/c5ra12706h ◽

2015 ◽

Vol 5 (89) ◽

pp. 72500-72507 ◽

Cited By ~ 10

Author(s):

Philiswa N. Nomngongo ◽

J. Catherine Ngila

Keyword(s):

Mass Spectrometry ◽

Trace Elements ◽

Hollow Fiber ◽

Inductively Coupled Plasma ◽

Liquid Fuel ◽

Inductively Coupled ◽

Icp Ms ◽

Plasma Mass Spectrometry ◽

P Application

Application of alumina–titania hollow fiber sorptive microextraction coupled to ICP-MS for simultaneous preconcentration of trace elements in liquid fuel samples.

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Quantification of Trace and Ultra-trace Elements in Nuclear Grade Manufactured Graphites by Fast-Flow Glow Discharge Mass Spectrometry and by Inductively Coupled Plasma – Mass Spectrometry after Microwave – Induced Combustion Digestions

MRS Proceedings ◽

10.1557/proc-1215-v16-09 ◽

2009 ◽

Vol 1215 ◽

Author(s):

Xinwei Wang ◽

Gaurav Bhagat ◽

Kevin Michael O'Brien ◽

Karol Putyera

Keyword(s):

Mass Spectrometry ◽

Trace Elements ◽

Inductively Coupled Plasma ◽

Nuclear Grade ◽

Inductively Coupled ◽

Icp Ms ◽

Plasma Mass Spectrometry ◽

Ultra Trace ◽

Fast Flow

AbstractFF-GDMS and MIC-ICP-MS methods were developed for the determination of mg/kg- and μg/kg-level B, Mg, Al, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, Sb, W and Pb in nuclear-grade graphite. Consistent results have been achieved in determining trace elements like B, Ti, Cr, Mn, Zr, Sb and Pb by both methods, which vary mostly less than ±30%, and are in line with the manufacturer reference values. On Mg, Al, Fe, Co, Zn, Mo and W, FF-GDMS analyses also show good agreement with the manufacturer's data. Continuing efforts in identifying source of interference, which has limited the MIC-ICP-MS analysis of these elements, is currently underway.

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