Sentences with phrase «as liquid chromatography»

They analyzed those samples using a chemical detection technique known as liquid chromatography mass spectrometry that singles out the presence of targeted chemicals.

Not exact matches

According to one of the program's earliest participants, Northern Michigan sophomore Alex Roth, who has 400 - level classes like Biostatics and Gas and Liquid Chromatography to get through, that's not as simple as it sounds.

Editor's Note: Brian Ruddell, a New Zealander studying in Australia, was kind enough to write us about High Performance Liquid Chromatography tests that he performed on a number of chiles that he grew in his garden, as well as a famous hot sauce.

by Brian Ruddell Editor's Note: Brian Ruddell, a New Zealander studying in Australia, was kind enough to write us about High Performance Liquid Chromatography tests that he performed on a number of chiles that he grew in his garden, as well as a famous hot sauce.

As Dave noted back then, the report was interesting for the lack of detail of the methodology used to calculate Scoville Units through HPLC (High Performance Liquid Chromatography).

With this labeling method, the intrinsically labeled Golden Rice β - carotene showed a protonated molecule of m / z of Mβc + H + = 536 + 1 (representing unlabeled β - carotene) and a range of isotopomers with the most abundant showing an enrichment of 9 deuterium at Menrich - βc = Mβc + H + + 9 mass units (Figure 4) as analyzed by using the liquid chromatography / mass spectrometry with a positive atmospheric pressure chemical ionization interface (the total m / z was Mβc + 9 + H + = 536 + 9 + 1 = m / z 546)(23).

Total urinary As was measured by collision cell ICP - MS using germanium as an internal standard.30 Arsenic species were obtained by a high - performance liquid chromatography GP50 pump (Dionex Corp) and a PRP100X column (Hamilton Co) connected to a collision cell ICP - MS.29, 31 - 33 Approximately 10 % of samples were run in duplicate for both analyseAs was measured by collision cell ICP - MS using germanium as an internal standard.30 Arsenic species were obtained by a high - performance liquid chromatography GP50 pump (Dionex Corp) and a PRP100X column (Hamilton Co) connected to a collision cell ICP - MS.29, 31 - 33 Approximately 10 % of samples were run in duplicate for both analyseas an internal standard.30 Arsenic species were obtained by a high - performance liquid chromatography GP50 pump (Dionex Corp) and a PRP100X column (Hamilton Co) connected to a collision cell ICP - MS.29, 31 - 33 Approximately 10 % of samples were run in duplicate for both analyses.

For products with As concentrations of more than 300 ng / g, a different lot number sample was purchased and tested using ICP - MS for total As and high - performance liquid chromatography with ICP - MS for As species.

As a result, the employment of qualitative or quantitative chromatographic techniques such as high - performance liquid chromatography (HPLC) could be very useful for quality control of TCHAs a result, the employment of qualitative or quantitative chromatographic techniques such as high - performance liquid chromatography (HPLC) could be very useful for quality control of TCHas high - performance liquid chromatography (HPLC) could be very useful for quality control of TCHM.

Our researchers may offer a broad range of laboratory work or focus on specific technical tasks, such as high - performance liquid chromatography or statistical analysis.

The researchers used liquid chromatography - mass spectrometry to analyse the collected samples, as well as investigating the impact of different breathing patterns.

The Xevo G2 - XS QToF can be integrated with Waters» chromatographic tools, such as ultra-performance liquid chromatography, for high throughput.

Simultaneous quantitative determination of 5 - aza - 2 ′ - deoxycytidine genomic incorporation and DNA demethylation by liquid chromatography tandem mass spectrometry as exposure - response measures of nucleoside analog DNA methyltransferase inhibitors.

chromatography Separation and detection of chemical compounds as a result of their having traveled at different rates according to their different attractions to the matter that carries them (such as a flowing liquid or gas).

Liquid chromatography coupled to mass spectrometry (LC - MS) is becoming the method of choice for examining complex biological specimens, that contain hundreds to thousands of proteins [9], such as CSF [10].

Here we use a metabolic labelling approach to achieve rapid generation of bio-isotopologues of the complete Caenorhabditis elegans transcriptome and its modifications and use them as reference standards to characterise the RNA modification profile in this multicellular organism through an untargeted liquid - chromatography tandem high - resolution mass spectrometry (LC - HRMS) approach.

ApoC - III ASO treatment reduced TG levels in chylomicrons, VLDL, and remnant particles in all of the mutants as measured by size - exclusion fast protein liquid chromatography (FPLC)(Figure 2, A — E), but had no effect in Ldlr — / — Lrp1fl / fl Alb - Cre + mice (Figure 2F).

Cells were then washed in medium, and metabolites were extracted with acetone and analyzed by reverse - phase high - performance liquid chromatography (HPLC) and by electrospray mass spectrometry as described previously (19).

As discussed in Part II of this review, urine hormone testing using both gas chromatography - mass spectrometry (GS - MS) or liquid chromatography - tandem mass spectrometry (LC - MS / MS) is well - established in the medical literature as a reliable method of assessing levels of active (free & conjugated) hormones and their metabolites, correlates well with patient symptoms, and reflects the beneficial impact (or lack of benefit and potentially oncogenic effect) of therapeutic interventions.43, 444 Radioimmunoassay (RIA) and enzyme - linked immunosorbent assay (ELISA, also known as enzyme immunoassay [EIA]-RRB- analysis may not be accuratAs discussed in Part II of this review, urine hormone testing using both gas chromatography - mass spectrometry (GS - MS) or liquid chromatography - tandem mass spectrometry (LC - MS / MS) is well - established in the medical literature as a reliable method of assessing levels of active (free & conjugated) hormones and their metabolites, correlates well with patient symptoms, and reflects the beneficial impact (or lack of benefit and potentially oncogenic effect) of therapeutic interventions.43, 444 Radioimmunoassay (RIA) and enzyme - linked immunosorbent assay (ELISA, also known as enzyme immunoassay [EIA]-RRB- analysis may not be accuratas a reliable method of assessing levels of active (free & conjugated) hormones and their metabolites, correlates well with patient symptoms, and reflects the beneficial impact (or lack of benefit and potentially oncogenic effect) of therapeutic interventions.43, 444 Radioimmunoassay (RIA) and enzyme - linked immunosorbent assay (ELISA, also known as enzyme immunoassay [EIA]-RRB- analysis may not be accuratas enzyme immunoassay [EIA]-RRB- analysis may not be accurate.

Measuring steroid hormones via urine testing using both gas chromatography - mass spectrometry (GS - MS) or liquid chromatography - tandem mass spectrometry (LC - MS / MS) has been shown to produce highly accurate results, but radioimmunoassay (RIA) and enzyme - linked immunosorbent assay (ELISA, also known as enzyme immunoassay [EIA]-RRB- analysis may not be accurate.

Pooled fecal samples collected within the last week of each dietary period were prepared for analysis of neutral and acidic fecal sterols as described previously.20 Gas — liquid chromatography of neutral and acidic fecal sterols was performed on a gas chromatograph (model HP5890, Hewlett — Packard, Palo Alto, Calif.) equipped with an automatic sample injector.

Tags for this Online Resume: CL (Command Language for AS / 400), High Performance Liquid Chromatography (HPLC), Research, microbiology, HPLC, GC, IC, Bioinformatics, DNA / RNA extraction, Next - generation sequencing, Cultivation, Wet lab work, Molecular biology, Gene cloning, Biogeochemistry, Oceanography, Marine biology, Field work, Research cruise