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Featured Application Note:
Profiling of Citrus Oils by 2D-LC
Udo Huber, Agilent Technologies
This application note describes the analysis of citrus oils using the Agilent 1290 Infinity 2D-LC solution with normal phase LC in the first dimension and reversed-phase LC in the second dimension. Read More |
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The Analysis of Chlorinated Dioxins Using Automated Pressurized Liquid Extraction, Multicolumn Cleanup, and Concentration
Phillip Bassignani, FMS,Inc.
Traditional dioxin/difuran extraction procedures require 24 h soxlet extraction, and a wide array of manual sorbent cleanup procedures, each with their own evaporation step. This results in extensive manual prep hours, high levels of potential error, and increased potential for background or cross-contamination of samples. By utilizing the FMS total prep process, extraction and cleanup processes are automated into a high efficiency process capable of delivering same day analysis of these samples. Read More |
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Improve CE-SDS Results with Automated Sample Preparation
Michael Kowalski, Clarence Lew, James A. Thorn, and Mehul P. Vora, Beckman Coulter Life Sciences
This application note presents an automated preparation method for the analysis of IgG protein samples by CE-SDS. The method improves results, reduces sample preparation variability, and samples show reproducible peak areas and migration times. Read More |
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Extraction of MPA and MPAG from Serum Using ISOLUTE SLE+ prior to LC–MS–MS
Dr. Victor Vandell, Biotage AB, Sweden
This application note describes a simple, efficient, and high-throughput method for the extraction of the immunosuppressant drug MPA and its metabolite MPAG from serum using ISOLUTE SLE+ in a 96-well plate format. The method demonstrates high reproducible recoveries for both analytes over a range of concentrations and RSDs less than 10%. Read More |
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Determination of Bisphenol A in Beverages by QuEChERS and LC–MS–MS
Xiaoyan Wang, UCT, LLC
Bisphenol A (BPA) is a chemical widely used in the production of various types of food and beverage containers, including the lining of metal cans. BPA is an endocrine disrupter that can mimic human hormones and can have adverse health effects. This application presents a simple, fast, and effective QuEChERS method for the determination of the BPA levels in bottled or canned beverages. Read More |
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Aqueous SEC Analysis of Pectins Used in Pharmaceutical Products
Stephen Luke, Agilent Technologies
Pectin, a natural product used for coating capsules, is produced from plant raw materials (apple, citrus, and beet). This application note presents Agilent PL aquagel-OH MIXED-H 8 µm columns that are ideal for resolving pectins. Read More |
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SEC–MALS Analysis of Polycarbonate Urethanes
Jason Todd, Wyatt Technology
Polycarbonate urethanes (PCUs) are a class of biocompatible polyurethanes that show great promise for use in orthopaedic implants, such as artificial hips. The molar mass distribution of a PCU is of critical importance for its performance in medical device applications and the absolute distributions of PCUs can only be obtained reliably from light scattering analysis. Read More |
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Enhancing Aroma Profiling of Wine with GC–TOF-MS
Nick Bukowski, Laura McGregor, and Steve Smith, Markes International
This application note shows that BenchTOF time-of-flight mass spectrometers, coupled with GC, can provide a high-performance solution for the detection and quantitation of aroma compounds in wine extracts. In particular, we show how the ChromCompare software module allows rapid identification of differences between samples, and how Select-eV variable-energy ionization capability enhances both the sensitivity and selectivity of analyses. Read More |
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