May 10th 2024
Michelle Colgrave of Edith Cowan University and Australia’s national science agency is the recipient of the 2024 Harvey W. Wiley Award.
Determination of Soft Drink Ingredients
December 2nd 2006Soft drink formulas often include preservatives, artificial sweeteners, flavours or caffeine in their list of ingredients. Using the Acclaim OA column, as many as eight common additives may be determined in a single run. Many of these additives are hydrophilic organic acids for which this column was designed. Notably, benzoate and sorbate, which do not resolve on C18 columns at low pH, are fully separated.
Determination and Confirmation of Priority Pesticide Residues in Baby Food
September 8th 2005To utilize the power of the Waters® UltraPerformance Liquid Chromatography (UPLC®) System combined with the fast MS acquisition rates of the Xevo™ TQ Mass Spectrometer for rapid determination and confirmation of pesticide residues in baby food.
Tandem GC–MS Analysis of Pesticides in Food Oils by Large Volume Injection with a Back-flush Option
September 2nd 2005As the global sourcing of foodstuffs becomes more common, the number of pesticide analyses performed continues to increase to test these sources for compliance with various regulations. The sheer number of analyses dictates that utilized methods must be reliable, robust and inexpensive.
Analysis of Fusarium Toxins Using LC–MS-MS: Application to Various Food and Feed Matrices
April 1st 2005Co-occurrence of several mycotoxins (deoxynivalenol, zearalenone, T-2-toxin, HT-2 toxin) produced by field fungi, such as Fusarium graminearum and Fusarium culmorum, requires several analysis methods for their characterization. A reliable method for the determination of type A- and B-trichothecenes and zearalenone in cereal-based samples is presented. To achieve optimal mass spectrometric detection, electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) were compared. Best results were obtained with ESI by implementing a two-period switching for the ionization polarity. The limit of quantification differs for each individual substance within the range 1–10 ppb. Mean recoveries using a standardized clean-up procedure were in the 54–93% range.