Food and Beverage Analysis

Determination of Contaminants in Beer Using LC–MS/MS and ICP-MS

October 01, 2016

Jan Knoop

Special Issues

The authors compare LC–MS/MS methods for quantification of the pesticide glyphosate with and without sample derivatization, and discuss ICP-MS methods for the determination of heavy metals.

Determination of Cannabinoid Content and Pesticide Residues in Cannabis Edibles and Beverages

October 01, 2016

Special Issues

QuEChERS is introduced to the discipline of forensic testing as a viable method for the extraction of pesticides and cannabinoids in various complex sample matrices.

Using Headspace Gas Chromatography for the Measurement of Water in Sugar and Sugar-Free Sweeteners and Products

October 01, 2016

Lillian A. Frink

Special Issues

This fast, automated method was shown to be accurate and precise for 16 liquid sweeteners, and is likely more accurate than Karl Fischer titration.

Ensuring the Safety of the Food Supply: Speeding Up Arsenic Speciation Analysis

October 01, 2016

Special Issues

This speciation method based on ion-interaction chromatography has a run time of

LC–MS Characterization of Mesquite Flour Constituents

October 01, 2016

Tina Nguyen
Sunny Jarman
Diona Diep
Cuong Pham
Charlie Ly
Gary R. Takeoka

Special Issues

Given the wide range in polarity of the components of mesquite flour, it is advantageous to study the health benefits of this flour using methods that combine the complementary approaches of reversed-phase and aqueous normal phase LC.

Determination of _α-Dicarbonyls in Wines Using Salting-Out Assisted Liquid–Liquid Extraction

October 01, 2016

ByJosé António Rodrigues
Inês Maria Valente

Special Issues

A new methodology for the analysis of three important -dicarbonyls (methylglyoxal, diacetyl, and pentane-2,3-dione) in wines was developed.

Analysis of Milk Powders Based on Chinese Standard Method Using the Agilent 5100 SVDV ICP-OES

July 20, 2015

Spectroscopy

Trace toxic and major nutrient elements were measured in a single measurement in a milk powder SRM, with no ionization buffers, using a synchronous dual view ICP-OES. The methodology was in accordance with Chinese method GB 5413.21 for raw milk and dairy products. Excellent recoveries were achieved for all elements determined in the SRM, demonstrating the accuracy of the method over a large dynamic range.

Rapid Determination of Five Arsenic Species in Polished Rice Using HPLC-ICP-MS

July 20, 2015

Spectroscopy

Five arsenic species, including the toxicologically relevant inorganic forms As(III) and As(V), were determined in 4 minutes, with excellent sensitivity, accuracy and precision using an Agilent LC fitted with a reversed phase column coupled to an ICP-MS. Any potential interferences on As such as ArCl+ were removed using a single-cell gas mode (helium mode), speeding up the analysis.

Determination of Chromium, Selenium, and Molybdenum in Nutritional Products by ICP-MS

July 20, 2015

Spectroscopy

A validated ICP-MS method for the determination of Cr, Se, and Mo in infant formula and adult nutritional products was transferred to a next-generation system. This methodology is potentially suitable as a global reference method for the application, as all samples can be analyzed using a single-cell gas mode (helium mode) that provides effective removal of polyatomic interferences - significantly improving productivity.

High Throughput Determination of Inorganic Arsenic in Rice Using Hydride Generation-ICP-MS

July 20, 2015

Spectroscopy

A fast and sensitive method using hydride generation (HG) with ICP-MS has been developed for the separation and detection of toxic inorganic arsenic (iAs) in foodstuffs. The iAs measured values in 31 commercial rice products all fell below the current legislative maximum level of 150 µg/kg set by China. Comparing the results obtained by HG-ICP-MS and HPLC-ICP-MS showed comparable limits of detection were achieved.