Sample preparation for stable isotope determination
Stable isotope mass spectrometric determination of semen transfer in malaria mosquitoes
... the sample preparation is straightforward and cost of sample analysis is ...that stable isotopes offer a great potential to study mating behaviour in ...addition, stable isotopes are ...
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Method for the determination of concentration and stable carbon isotope ratios of atmospheric phenols
... the determination of the stable car- bon isotopic composition of atmospheric nitrophenols in the gas and particulate phases is ...and isotope ratio measurements of precursor and product to test the ...
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DETERMINATION OF PROTEIN SYNTHESIS IN RAINBOW TROUT, ONCORHYNCHUS MYKISS, USING A STABLE ISOTOPE
... It has been suggested (Houlihan, 1991) that the consumption of 1 g of protein in a variety of species of fish stimulates the synthesis of, approximately, an equal amount of protein. Although synthesis of protein may ...
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Determination of Trophic Structure in Selected Freshwater Ecosystems by using Stable Isotope Analysis
... where X is δ 13 C or δ 15 N and R is 13 C/ 12 C or 15 N/ 14 N of sample or standard. Statistical Analysis Homogeneity of variances and normality of the samples were checked in all instances. Since the data was ...
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Method for determination of stable carbon isotope ratio of methylnitrophenols in atmospheric particulate matter
... for isotope ratio analysis, which require substantial modification of existing ...larger sample masses per measure- ment than GC coupled to conventional mass spectrometry or other state-of-the-art GC ...
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Sample Preparation Techniques For Total Biomass Content Determination
... available sample size, but beyond that are not ...hypothetical sample preparation method can be conclud- ed by foreseeing any potential issues with the subsequent stable isotope ...
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Determination of Subsurface Nitrogen Contamination using Tree Leaves and Stable Nitrogen Isotope Ratios.
... 126 positive outlier value of 17‰. An ANOVA of all tree species indicated that no significant difference (ANOVA, P = 0.19) existed between tree species for the small and large tree population δ 15 N values. An important ...
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Determination of the geographical origin of rice using stable isotope ratio and multi-element analyses
... strontium isotope ratio ( 87 Sr/ 86 Sr) of brown rice to estimate their ...Sr isotope ratio, those of the Chinese and Vietnamese rice samples were slightly higher than most of the Japanese ones, and ...
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Stable Isotope Sourcing Using Sampling
... Abstract Stable isotope mixing models are used to estimate proportional contributions of sources to a mix- ture, such as in the analysis of animal diets, plant nutrient use, geochemistry, pollution, and ...
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Stable Isotope Studies of Fuel Oxygenate Biodegradation.
... Identification of organisms in self-inoculated BioGAC reactors is important as it can provide insights into the range of naturally occurring organisms that can degrade MTBE and TBA and the conditions necessary to support ...
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APPLICATION OF STABLE ISOTOPE SIGNATURES IN FOOD TRACEABILITY
... Flow Isotope Ratio Mass Spectrometer (IRMS). The stable isotopic compositions were recorded in the delta (δ) notation and expressed as a per mil (‰) relative to a standard: Vienna Pee Dee Beleminite (VPDB) ...
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SELDI-TOF-MS determination of hepcidin in clinical samples using stable isotope labelled hepcidin as an internal standard
... high-throughput sample preparation via on-chip retentate chromatography with hepcidin binding to NP20, CM10 and IMAC surfaces (normal-phase silica, cation exchange or immobilised metal ion chromatography ...
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Determination of zirconium isotope composition and concentration for nuclear sample analysis using Thermal Ionization Mass Spectrometry
... zirconium isotope abundance and ...M. Sample 1 was the most challenging in terms of separation: the Mo/Zr concentration ratio was close to ...of sample 1 was essentially a fission product. ...
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Stable Isotope Techniques to Address Coastal Marine Pollution
... The stable isotope analyses were performed using a modified Varian Mat GD-150 Mass ...Spectrometer. Stable isotope data are reported as standard mean ocean water (SMOW) for 18 O and 2 H ...
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My Stable Isotope Journey in Biogeochemistry, Geoecology, and Astrobiology
... We took a step “backwards” so to speak and walked away to refrain from immediately collecting the obvious organisms in the springs and devised a coordinated sampling plan on the terraces adjacent to the springs hoping ...
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A guide for proper utilization of stable isotope reference materials.
... of sample and standard can minimise any analytical bias only when samples and reference materials are of comparable chemical and elemental compositions, which is termed matrix ...
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Sample size determination for estimating antibody seroconversion rate under stable malaria transmission intensity
... situations, sample sizes of no less than 1,000 and 500 are recommended for EIR = ...to sample sizes of more than 1,000 ...large sample size diminishes the chance of underestimating SCR due to null ...
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PECULIARITIES OF SAMPLE PREPARATION FOR THE DETERMINATION OF CERTAIN MYCOTOXINS IN GRAIN PRODUCTS AND FRUITS BY IMMUNOBIOSENSOR ANALYSIS
... of sample preparation for detection of mycotoxins aflatoxin B1 and T2 in grain products (wheat, maize, sunflower and oats) as well as patulin in fruits (plum, apple and grape) by the surface plasmon ...
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Improved sample preparation for determination of phosphoramidates in water samples based on Na + cat-ion exchange
... A new (Na + ) cat-ion exchange method for CWA sample preparation was evaluated. The new method prevents the acidification of samples associated with the use of exchangers in H + -mode. The acidification may ...
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The use of stable isotope measurements for monitoring and verification of CO2 storage
... Well 2 at both Weyburn (Fig. 2d,e) and Pembina (Fig. 3d,e) show that even with very small increases in CO 2 concentration at the wells, the G 13 C CO2 values trend toward the value of the injected CO 2 . Figure 4 ...
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