Quantifying absolute carbon isotope ratios by AMS
Keywords: AMS; IRMS; 14C; Collision cell; Cross-section; Absolute ratio;
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The forensic analysis of office paper using carbon isotope ratio mass spectrometry. Part 3: Characterizing the source materials and the effect of production and usage on the δ13C values of paper
Keywords: Isotope; Forensic; Paper; Document; IRMS;
Molecular effects of ER alpha- and beta-selective agonists on regulation of energy homeostasis in obese female Wistar rats
Keywords: Alpha; ER alpha-selective agonist 16α-LE2; Beta; ER beta-selective agonist 8β-VE2; BMI; body mass index; E2; 17β-estradiol; ER; estrogen receptor; FAS; fatty acid synthase; Gen; genistein; Glut4; glucose transporter 4; HF; high fat; HOMA; Homeostasis A
Highly IR-transparent microfluidic chip with surface-modified BaF2 optical windows for Infrared Microspectroscopy of living cells
Keywords: IRMS; Microfluidic; Living cells; Barium fluoride
Isolation of a unique dipyridodiazepinone metabolite nevirapine during large scale extraction of Cliv-92 from the seeds of Cleome viscosa
Keywords: Cleome viscosa; Nevirapine; Dipyridodiazepinone; IRMS; Chiral-HPLC
Stable isotope analysis of cattle tail hair: A potential tool for verifying the geographical origin of beef
Keywords: Carbon; Nitrogen; Hydrogen; IRMS; Traceability database
Physicochemical characterisation of French royal jelly: Comparison with commercial royal jellies and royal jellies produced through artificial bee-feeding
Keywords: Royal jelly; IRMS; Water; Amino acids; Sugars; 10-HDA; Protein; Principal component analysis; Food analysis; Food composition
Isotope ratio mass spectrometry identifies soil microbial biocontrol agents having trophic relations with the plant pathogen Armillaria mellea
Keywords: Biocontrol; Armillaria mellea; Soil; IRMS
The forensic analysis of office paper using carbon isotope ratio mass spectrometry—Part 2: Method development, validation and sample handling
Keywords: Isotope; Forensic; Paper; Document; IRMS; Method validation
A prospective randomised study comparing oral 13C-bicarbonate tracer technique versus indirect calorimetry for measurement of energy expenditure in adults
Keywords: Energy expenditure; Bicarbonate; Tracer; Calorimetry; Exercise; Rest; Adult; BMI; body mass index; BT; oral 13C-bicarbonate tracer; dob; delta over base; EE; energy expenditure; IC; indirect calorimetry; IRMS; isotope ratio mass spectrometry; RaCO2; rate
H, C, N and S stable isotopes and mineral profiles to objectively guarantee the authenticity of grated hard cheeses
Keywords: IRMS; ICPMS; Traceability model; Parmigiano Reggiano; Mislabelling
Forensic utility of carbon isotope ratio variations in PVC tape backings
Keywords: Carbon Isotope; PVC; Adhesive tape; Forensic; IRMS
Elucidating the chemical structure of pyrogenic organic matter by combining magnetic resonance, mid-infrared spectroscopy and mass spectrometry
Keywords: CPMAS; cross polarization magic-angle spinning; DPMAS; direct polarization magic-angle spinning; DRIFT; diffuse reflectance Fourier transform infrared spectroscopy; EPR; electron paramagnetic resonance; IRMS; isotope ratio mass spectrometer; ssNMR; solid
Investigating carbonate formation in urban soils as a method for capture and storage of atmospheric carbon
Keywords: C&D; Construction and Demolition; CCS; Carbon Capture and Storage; IRMS; Isotope Ratio Mass Spectrometry; SOC; Soil Organic Carbon; SIC; Soil Inorganic Carbon; TC; Total Carbon; TG DSC QMS; Thermogravimetry-Differential Scanning Calorimetry Coupled with Q
Influences of β-HCG administration on carbon isotope ratios of endogenous urinary steroids
Keywords: CIR; carbon isotope ratios; TESTO; testosterone; DHEA; dehydroepiandrosterone; ERC; endogenous reference compound(s); TC; target compound(s); VPDB; Vienna Pee Dee Belemnite; IRMS; isotope ratio mass spectrometry; HCG; human chorionic gonadotropin; TBME; T
Effects of combustion emissions from the Eurasian continent in winter on seasonal δ13C of elemental carbon in aerosols in Japan
Keywords: Stable carbon isotope ratio; IRMS; Particulate matter; Elemental carbon; SPM; PM2.5; Source apportionment
A modified procedure for measuring oxygen-18 content of nitrate
Keywords: 18O isotope; Nitrate extraction; IRMS; Cl− interference; Performance assessment; Uncertainty evaluation
Authenticity control and identification of origin of synthetic creatine-monohydrate by isotope ratio mass spectrometry
Keywords: Creatine-monohydrate; IRMS; Authenticity; Origin; Carbon isotopes; Nitrogen isotopes
Characterisation of the geographical origin of Italian potatoes, based on stable isotope and volatile compound analyses
Keywords: Potatoes; IRMS; Volatile compounds; Geographical origin
Nitrogen metabolism of wood decomposing basidiomycetes and their interaction with diazotrophs as revealed by IRMS
Keywords: IRMS; Isotope labeling; Microbial interaction; N2 assimilation; Nitrogen; Wood decomposing basidiomycetes
Tissue turnover in ovine muscles and lipids as recorded by multiple (H, C, O, S) stable isotope ratios
Keywords: Stable isotopes; Carbon; Sulphur; Hydrogen; Oxygen; Meat; Muscle; Lipid; Lamb; IRMS; Isotopic clock;
Combining isotopic signatures of n(87Sr)/n(86Sr) and light stable elements (C, N, O, S) with multi-elemental profiling for the authentication of provenance of European cereal samples
Keywords: Cereal; Authentication of geographical origin; Isotopic tracers; Multi-elemental profiling; CRM; Certified Reference Materials; IRMS; Isotope Ratio Mass Spectrometry; MC-TIMS; Multi Collector Thermal Ionisation Mass Spectrometer; MC-ICPMS; Multi Collector
Stable carbon isotope ratio analyses on trace methane from ice samples
Keywords: Methane; Ice; Method; IRMS; Carbon isotope; δ13CH4;
On the use of IRMS in forensic science: Proposals for a methodological approach
Keywords: Isotope ratio mass spectrometry; IRMS; Forensic application; Stable isotope; Methodological framework; Process; Methodology; Source inference; Illicit drug; Ignitable liquid; Explosive
Analysis of 1-deoxy-d-xylulose 5-phosphate synthase activity in Grey poplar leaves using isotope ratio mass spectrometry
Keywords: Populus x canescens; Salicaceae; Grey poplar; Enzyme analysis; IRMS; Isoprenoids; MEP pathway; DXS; DXP;
Reliability of stable isotope values from meat juice for the determination of the meat origin
Keywords: Origin; Meat; δ18O; δD; Meat water; IRMS
Berberine and plant stanols synergistically inhibit cholesterol absorption in hamsters
Keywords: ABCG; ATP-binding cassette superfamily G; BBR; berberine chloride; BBRPS; combination of BBR and plant stanols; BW; body weight; CT; control; FSR; free cholesterol fractional synthesis rate; CYP7A1; cholesterol-7α-hydroxylase; CYP27A1; sterol 27-hydroxla
Intra-muscular and inter-muscular variation in carbon turnover of ovine muscles as recorded by stable isotope ratios
Keywords: Stable isotopes; Carbon; IRMS; Lamb; Diet-switch; Muscle turnover; Intra-muscular variation; Inter-muscular variation; Authenticity; Traceability
Determination of the geographical origin of Slovenian black locust, lime and chestnut honey
Keywords: Honey; Geographical origin; TXRF; Elements; IRMS; δ13C; δ15N; Chemometrics
Characterisation of authentic Italian extra-virgin olive oils by stable isotope ratios of C, O and H and mineral composition
Keywords: Olive oil; Glycerol; IRMS; ICP–MS; PDO
Isotope ratio mass spectrometry analysis of the oxidation products of the main and minor metabolites of hydrocortisone and cortisone for antidoping controls
Keywords: Hydrocortisone; Cortisone; IRMS; Oxidation
Detection of counterfeit antiviral drug Heptodin™ and classification of counterfeits using isotope amount ratio measurements by multicollector inductively coupled plasma mass spectrometry (MC-ICPMS) and isotope ratio mass spectrometry (IRMS)
Keywords: IRMS; Multicollector ICP-MS; Isotope ratio; Counterfeit drug; Authenticity; Forensic evidence
Discrimination between Southern Italy and foreign milk samples using spectroscopic and analytical data
Keywords: Cow milk; NMR; IRMS; Geographical origin
Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Preliminary study on TATP and PETN
Keywords: TATP; PETN; Isotope ratio mass spectrometry; Stable isotopes; IRMS; Explosives
Discrimination of document paper by XRF, LA–ICP–MS and IRMS using multivariate statistical techniques
Keywords: Document paper; Forensic; XRF; LA–ICP–MS; IRMS; Paper analysis
2H NMR and 13C-IRMS analyses of acetic acid from vinegar, 18O-IRMS analysis of water in vinegar: International collaborative study report
Keywords: Vinegar; Authenticity; SNIF–NMR; IRMS; Deuterium; Carbon 13; Oxygen 18
Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Discrimination of ammonium nitrate sources
Keywords: Stable isotopes; Ammonium nitrate; Explosives; Isotope ratio mass spectrometry; IRMS
Stable isotope analysis for green coffee bean: A possible method for geographic origin discrimination
Keywords: Food composition; Green coffee; Geographic origin discrimination; Stable isotope analysis; IRMS; Elemental analysis
De novo biosynthesis versus sequestration: A network of transport systems supports in iridoid producing leaf beetle larvae both modes of defense
Keywords: Leaf beetle; Chemical defense; Iridoids; IRMS; 8-Hydroxygeraniol; 8-Hydroxylinalool; 8-Hydroxygeraniol-8-O-β-d-glucoside; Sequestration; Excretion
Determining the geographic origin of milk in Australasia using multi-element stable isotope ratio analysis
Keywords: Milk; Dairy; Appellation; Origin; Isotopes; IRMS
Coupling of thermal analysis with quadrupole mass spectrometry and isotope ratio mass spectrometry for simultaneous determination of evolved gases and their carbon isotopic composition
Keywords: TG–DSC; TG–DSC–QMS; IRMS; Lignin; Cellulose; Fungal degradation; Wheat straw
Dynamic pathway allocation in early terpenoid biosynthesis of stress-induced lima bean leaves
Keywords: Phaseolus lunatus; Léguminosae; Lima bean; Isoprenoid biosynthesis; Cross talk; 1-Deoxy-d-xylulose; Mevalonate; Terpenoids; Volatiles; Isotopically labeled; Inhibitors; IRMS; Isotopic discrimination;
Forensic comparison of soil samples: Assessment of small-scale spatial variability in elemental composition, carbon and nitrogen isotope ratios, colour, and particle size distribution
Keywords: Soils; Major elements; Trace elements; Particle size distribution; Colour; Stable isotopes; Sampling; Principal components analysis; Agglomerative hierarchical cluster analysis; ICP-AES; ICP-OES; ICP-MS; IRMS; Laser granulometry; Spatial variation
Stable isotopic composition of the active pharmaceutical ingredient (API) naproxen
Keywords: IRMS; Isotope Ratio Mass Spectrometry; Naproxen; API; Active pharmaceutical ingredient; Isotope ratio; δ13C; δ18O; δD;
On-line gas chromatography combustion/pyrolysis isotope ratio mass spectrometry (HRGC-C/P-IRMS) of major volatiles from pear fruit (Pyrus communis) and pear products
Keywords: IRMS; HRGC-C/P-IRMS; Isotope ratio mass spectrometry; Pear flavour; Pear products; 13C/12C ratio; 2H/1H ratio;
Characterisation of the geographical origin of buffalo milk and mozzarella cheese by means of analytical and spectroscopic determinations
Keywords: Buffalo milk mozzarella; NMR; Multivariate statistical analysis; IRMS; Geographical origin;
Changes in flux pattern of the central carbohydrate metabolism during kernel development in maize
Keywords: DAP; days after pollination; IRMS; isotope-ratio mass spectroscopy; NMR; nuclear magnetic resonance; PPP; pentose phosphate pathway; Zea mays; Kernel culture; NMR spectroscopy; Starch; Carbohydrate cycling; 13C-glucose;