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Quantification of insulin-like growth factor-I by liquid chromatography-mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 38 ()

We describe three methods of sample preparation for the liquid chromatography coupled with mass spectrometric measurement of insulin-like growth facto......

Non-lethal sampling does not misrepresent trophic level or dietary sources for Sagmariasus verreauxi (eastern rock lobster)

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (4)

RationaleIsotope analysis can be used to investigate the diets of predators based on assimilation of nitrogen and carbon isotopes from prey. Recent wo......

Gas chromatography coupled to time-of-flight mass spectrometry using parallel electron and chemical ionization with permeation tube facilitated reagent ion control for material emission analysis

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (7)

RationaleVolatile organic compounds (VOCs) emitted by an artificial leather part for car interiors are determined using GC-MS (gas chromatograph coupl......

Metabolic study of selective androgen receptor modulator LY2452473 in thoroughbred horses for doping control

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (9)

RationaleSince 2010, there has been an increasing number of adverse analytical findings related to selective androgen receptor modulators (SARMs) in c......

A novel dynamic proteomics approach for the measurement of broiler chicken protein fractional synthesis rate

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (10)

RationaleThe study of protein synthesis in farm animals is uncommon despite its potential to increase knowledge about metabolism and discover new biom......

Bias estimation in the certification of steroid reference materials for carbon isotope delta measurements via elemental analyser and gas chromatography-combustion-isotope ratio mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (10)

RationaleTwo new certified reference materials (CRMs) have been prepared providing three steroids certified for stable carbon isotope delta values, de......

Stronger negative priming effect and lower basal respiration rates in nutrient-poor as compared to nutrient-rich forestry-drained peatland

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (16)

RationaleLand-use changes, e.g., forestry drainage, modify the characteristics of peatland soil and affect the peatland carbon (C) balance. Peat soil ......

Hydroxy levamisole and its phase II conjugates as potential indicators of levamisole doping in thoroughbred horses

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (3)

RationaleAccording to previous research, aminorex is the major metabolite of levamisole; however, in the screening of levamisole-positive racehorse ur......

Adapting an elemental analyser to perform high-temperature catalytic oxidation for dissolved organic carbon measurements in water

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (4)

RationaleMany laboratories employ elemental analyzers (EAs) coupled to isotope ratio mass spectrometers (IRMSs) to measure carbon stable isotope ratio......

Electrospray ionization mass spectrometry adduct formation by mobile phase additives: A case study using nitrile functional groups containing selective androgen receptor modulators

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (14)

RationaleThe formation of mass adducts is common during electrospray ionization mass spectrometry (ESI-MS). However, the mechanism that leads to adduc......

Deprotonation of trinitrotoluene by dichloromethane in atmospheric pressure chemical ionization mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2023; 37 (3)

RationaleTrinitrotoluene (TNT) and its derivatives are found in the environment. Depending on the analysis conditions, TNT may be detected as a deprot......

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