A QuEChERS approach was effectively used to extract PAHs from grilled hamburger meat; the SPB-608 GC column provided the selectivity necessary to resolve all but one isomeric set.
Method: Spectrophotometric Color Determination at 420 nm
Zero adjustment
For each measurement series, a zero adjustment is required.
It is recommended to use the same cell for zero adjustment and for sample measurement.
The zeroing procedure for the measurement series is automatically prompted by
High performance, reliability, and reproducibility of HS-SPME in combination with GC/MS for the determination of VOCs in water was proven in an interlaboratory trial. The new ISO 17943 using HS-SPME is an improvement on existing official methods for this determination
Terpenes are present in essential oils derived from plants and often impart characteristic aromas to the plant or its oil. The SPME is a convenient, efficient, and easy to automate sample preparation technology for analyzing the terpene/terpenoid profile of these
The use of solid phase microextraction (SPME) allowed for the straightforward, fast, sensitive, and accurate GC/MS determination of the residual solvent content of spiked and unspiked samples of hemp extract.
Rapid, easy, sensitive method for the anaysis of PAEs, using LLE and direct immersion SPME, demonstrated good accuracy, repeatability, linearity and LOQ.
This assay protocol is suitable for the colorimetric/fluorometric detection of Galactose and Lactose in cell and tissue culture supernatants, urine, plasma, serum, and other biological samples using the Galactose Assay Kit.
Simple sugars using hydrophilic interaction chromatography (HILIC): Chromatographic analysis of simple sugars can be challenging because these compounds are highly polar, uncharged, and lack a chromophore. The preferred mode of HPLC separation is HILIC because it provides the advantage of
A step-by-step description of the reflectometric determination of sucrose (saccharose) in soft drinks using Reflectoquant® test strips and reflectometer, ideal for in-process control and on-site testing.
Determination of the fatty acid composition of nuts using established methods for GC analysis on capillary columns of 3 selectivities: Omegawax, SP-2560, and ionic liquid based SLB-IL111.
RP-Amide and HILIC, both amenable to the analysis of polar compounds, were successfully used to resolve several beverage components, including sugars, vitamins, sweeteners, preservatives, and caffeine.
The use of veterinary drugs may be integral to the process of raising food producing animals and fish. These can include antibiotics, hormones, and steroids.
Supelco's Z-Sep+ sorbent effectively removes fat and pigment interferences from avocado, with good pesticide recoveries; it removes more matrix than traditional PSA/C18 sorbent, and produces a lower background for GC-MS analysis.
Supel™ Tox AflaZea SPE cartridges provide exceptional cleanup of corn meal, wheat meal, and raw peanut paste, yielding high analyte recoveries and low %RSD for aflatoxin analysis.
Polychlorinated biphenyls (PCBs) were once widely used in many industrial and commercial applications such as insulating fluids, dielectrics, and lubricants. This included their extensive use in electrical transformers. PCB use has been banned in many countries, and the Stockholm Convention