Investigation of ultrahigh‐performance liquid chromatography/travelling‐wave ion mobility/time‐of‐flight mass spectrometry for fast profiling of fatty acids in the high Arctic sea surface microlayer

Abstract

This study presents a fast alternative method for screening and profiling of FAs, which has the advantage of not requiring any complicated sample preparation, thus limiting the loss of analytes. Almost no manual handling, together with the very small sample volumes needed, is certainly beneficial for the determination of trace amounts and should open up the field of applications to also include atmospheric aerosol and fog.

Wintertime Arctic Sea Spray Aerosol Composition Controlled by Sea Ice Lead Microbiology

“…32% of individual SSA particle Raman spectra contained at least one short-chain fatty acid, while long-chain fatty acids and amino acids were present in 21% and 9% of SSA particles, by number, respectively (Figure 4). Amino acids and fatty acids have previously been observed in the SML of open leads in the summer high Arctic 61,62 and in bulk ambient aerosols during spring–summer in the Canadian Arctic 60,63 and during spring–fall at Svalbard. 64,65 Notably, all SSA particles containing amino acids also contained saccharides, and most particles (75%, by number) containing one short-chain fatty acid also contained a saccharide signature.…”

Anti-aphrodisiac pheromone, a renewable signal in adult butterflies

“…To the best of our knowledge, there are no data published dealing with amino acid composition in nectar of B. orientalis flowers. In spite of nectar production per flower in B orientalis being relatively low 32 , our developed sensitive analytical method enabled us to detect 19 of 20 standard proteinogenic amino acids, including Phe that is used for production of anti-aphrodisiac by P. napi male amino acids, from around 1μl of nectar. Our data are in accordance with the results of a large scale screening of nectar samples by Baker and Baker 33 , revealing the presence of amino acids in 260 of 266 species tested and showing that amino acids are commonly present in floral nectars.…”

“…The amino acid profiles in nectar of B. orientalis , was identified by derivatization of the free amino acids with N -hydroxysuccinimide ester of N-butylnicotinic acid (C 4 -NA-NHS) 32 , followed by identification using liquid chromatography tandem mass spectrometry (LC-MS/MS) in multiple reaction monitoring (MRM) mode (for more details, see Supplementary Information).…”

Analysis of illicit pills and drugs of abuse in urine samples using a 3D-printed open port probe hyphenated with differential mobility spectrometry-mass spectrometry

“…The application of IMS has been described for the analysis of amino acids, peptides, proteins, lipids, oligonucleotides, carbohydrates, and pharmaceutical and recreational drugs. 17–21 Differential ion mobility spectrometry (DMS), 22 alternatively called high-field asymmetric waveform ion mobility spectrometry (FAIMS), 23 utilizes separation voltage (SV) as an alternating electric field to force trajectory on the ion based on its collisional cross section. An additional DC voltage named compensation voltage (CoV) is also applied to correct the trajectory and enable the ions to pass through the DMS cell.…”