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Gas chromatography/mass spectrometry analysis of organic acid profiles in human serum: A protocol of direct ultrasound-assisted derivatization

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (17)

Rationale Low-molecular-weight organic acids that generally contain one to three carboxyl groups are involved in many important biological processes; ......

Application of a "Continuous-Acquisition-Method" to potassium isotope measurements by multi-collector inductively coupled plasma mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (13)

Rationale The very small mass difference between K-41 and (ArH+)-Ar-40 makes the flat, hydride interference-free peak shoulders very narrow (0.002-0.0......

Comparative study of B content and delta B-11 in the enamel of isolated teeth from brothers in the same family

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (19)

Rationale The quantity of boron (B) and its isotopic ratios in tooth can provide information on dietary habits and oral health of individuals. These m......

Influences of oxidation ability on precision in nitrogen isotope measurements of organic reference materials using elemental analysis-isotope ratio mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (14)

Rationale The precision of the standard measurements of reference materials (RMs) is critical to normalize the raw delta N-15 values of samples to the......

Daporinad in vitro metabolite profiling via rat, dog, monkey and human liver microsomes by liquid chromatography/quadrupole-orbitrap mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (18)

Rationale Daporinad is a novel and potent inhibitor of nicotinamide phosphoribosyl transferase with potential antineoplastic and antiangiogenic activi......

Hollow electrode capillary plasma ionization source for rapid online detection of gaseous samples

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (12)

RATIONALE Gas chromatography mass spectrometry (GC-MS) with electron ionization (EI) is the most widely used analysis technique of gaseous samples, bu......

Comprehensive analysis of phospholipids and glycerol glycolipids in green pepper by ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (18)

Rationale As important components of plant cells, lipids are involved in various biological functions. However, the composition and content of lipids ......

Determination of trace fluoride in water samples by silylation and gas chromatography/mass spectrometry analysis

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (11)

Rationale Due to the ubiquity of fluorides and the small gap between a safe dose and a harmful one, it is necessary to develop a robust analytical met......

Investigation of phytochemical composition and metabolite profiling in vivo of Beta vulgaris L.

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (19)

Rationale Beta vulgaris L. has attracted increasing attention because of its broad application. The root of B. vulgaris L. (beetroot) possesses many e......

Rapid detection of nine synthetic cathinones in blood and urine by direct analysis in real-time-tandem mass spectrometry

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (15)

Rationale Designer drugs of cathinone, a kind of hallucinogen, were abused in the recent years. They were also known as bath salts, plant fertilizers,......

Tracking the deprotonation site of dehydroandrographolide with electrospray ionization mass spectrometry by deuteration

期刊: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2021; 35 (18)

Rationale Dehydroandrographolide (DA) is a diterpene compound of biological interest that contains one alpha,beta-unsaturated lactone group and two hy......

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