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用于药物分析的Supel-Select HLB SPE
Select HLB SPE是一种亲水性聚合物相,用于从水性基质中提取分析物。在本文中,它将用于从血浆中提取他汀类药物,以及从饮用水中提取48种药物分析物。
蛋白质SEC的色谱柱和分析标准品
体积排阻色谱(SEC)色谱柱和现成的标准品有助于方法开发,并提高蛋白质SEC方法的耐用性。
食品包装中的残留溶剂
食品包装中的残留溶剂
NMR参考标准品
Sigma-Aldrich.com提供了有关使用稳定标记同位素作为NMR参考标准品的参考文章。
默克Supelco®标准物质_选购指南-默克生命科学
标准物质作为分析测量值溯源与传递的重要载体,在分析检测或测量过程中起着非常重要的作用。默克标准物质种类超过20,000种,尤其是色谱、光谱及元素分析、滴定和物理性质等分析技术标准物质广受欢迎。
LC/MS/MS法测定谷物中的草甘膦、AMPA和草铵膦
使用 HPLC 和 SPE 的离子交换聚合物基颗粒测定燕麦片和婴儿谷物中的草甘膦及相关化合物。获得低水平的检测结果。
用于详细碳氢化合物分析的P-I-A-N-O标准
这是一篇有关详细的烃分析的P-I-A-N-O标准的文章。
Solid-state NMR on Larger Biomolecules
Solid-state NMR on Larger Biomolecules; Sigma-Aldrich.com
Enzymatic Method for Determining Branched Chain Amino Acids (BCAA Assay)
Assay protocol for the colorimetric detection of Branched Chain Amino Acids (BCAA) in biological samples using the alanine assay kit.
Hopane Reference Standards for use as Petrochemical Biomarkers in Oil Field Remediation and Spill Analysis
We provide high-quality, relevant hopane reference standards to be used as biomarkers for petrochemical oil field remediation and spill analysis.
New cis/trans FAME Standard for Optimising GC System Performance
AOCS and AOAC methods for determining the trans fatty acid composition of foods by gas chromatography require the use of a highly polar cyanosilicone capillary column to provide the best peak resolution attainable of the numerous geometric (cis & trans)
Investigating Matrix Interference in Analysis of Antiarrhythmic Cardiac Drugs in Plasma
For efficient therapeutic drug monitoring, it is important for clinicians to have access to fast and robust analytical methods for accurate assessment of drug efficacy. Industrial trends toward highly specific LC/MS applications over traditional immunoassay have resulted in the need
High-Performance Quantitative H-1 NMR
The signal ratio of two different protons can be measured with tremendous precision, which enables the generation of certified reference materials for use as qNMR standards.
A validated amino acid analysis assay for accurate quantification of stable isotope labeled protein reference materials: SIL thyroglobulin case study
With the emergence of mass spectrometry for the clinical measurement of proteins in biological matrices, the development of biological reference materials will continue to grow in importance.
P-I-A-N-O Standards for Detailed Hydrocarbon Analyses
This is an article concerning P-I-A-N-O standards for detailed hydrocarbon analyses.
Reference Standards for Analyzing Polyphenol Catechins
Reference Standards for Analyzing Polyphenol Catechins
A Comparison of Solid Phase Extraction (SPE) Products Used to Purify Peanut Paste Extract for Aflatoxin Analysis
Supel Tox AflaZea SPE produced exceptional analyte recoveries with good reproducibility for all aflatoxins while requiring less than half the sample volume required by competing products.HPLC analysis of all spiked samples after SPE cleanup showed that all compared SPE cartridges
Molecularly Imprinted Polymer SPE- Acid NSAIDs from Muscle
A new, successfully developed and validated LC-MS-MS method allowing the extraction of NSAIDs from poultry muscle tissue using Molecularly Imprinted Polymer (MIP) SPE.
Analysis of Pesticides in Baby Food by Solid Phase Microextraction (SPME) Using a New Overcoated Fiber
A direct immersion SPME method using a new overcoated SPME fiber was developed for the extraction of pesticides from pureed prune baby food.
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
Analysis of Tetrahydrocannabinol (THC) and Carboxytetrahydrocannabinol (THCCOOH) in Surface Waters by SPME and GC/MS
Certified Reference Materials: Synthesis and Characterization of Cocaine N-oxide HCl
Cocaine is one of the most widespread illicit drugs of abuse in the US. Cocaine N-oxide is a metabolite of cocaine formed by cytochrome P-450 mediated oxidation of cocaine.1,2
LC/MS/MS Method for Determination of Glyphosate, AMPA, and Glufosinate in Cereals
Glyphosate and related compounds are measured in oatmeal and infant cereal using ion-exchange polymer-based particles for HPLC and SPE. Low level detection was obtained.
Extended Lifetime Ethanol Metabolites and Method Development for Ethyl Sulfate and Ethyl Glucuronide Separation
Review of clinically relevant ethanol metabolites and analytical method development for the analysis of ethyl glucuronide and ethyl sulfate in urine matrix.
Method Validation for Determination of Chloramphenicol in Urine Using Molecularly Imprinted Polymer (MIP) SPE
The method for determination of low concentrations of chloramphenicol in bovine and porcine urine was developed. Sample cleanup was performed by Molecular Imprinted Polymer (MIP) columns. Confirmatory analyses were conducted using GC/MS-NCI after derivatisation (silylation). The described method was fully
Comparison of QuEChERS Products for the Extraction of Planar Pesticides from Spinach
Supel™ QuE Verde combines a novel carbon with zirconia coated silica (Z-Sep+) to provide an optimum balance between planar pesticide recovery and color removal.
Quantification of bitter acids in hops by thin layer chromatography
HPTLC separation followed by UV detection of the bitter acid content in various hop samples.
Analysis of Pesticide Residues in Cannabis Using QuEChERS Extraction and Cleanup Followed by GC/MS/MS Analysis
Compared to conventional PSA/C18/GCB cleanup, cannabis extracts cleaned with the Supel QuE Verde mixture showed lower GC/MS background, and better recoveries for many pesticides.
Multiplex Quantification of Infliximab and Adalimumab in Human Serum by LC-MS/MS Using Full-Length Stable Isotope Labeled Internal Standards
Infliximab and Adalimumab monoclonal antibodies (mAbs) are used widely to treat rheumatoid arthritis, psoriatic arthritis, and many autoimmune diseases by binding to tumor necrosis factor-alpha (TNFα) to reduce the inflammatory response.
Melamine Analysis via GC-MS
Sigma-Aldrich presents an article about the analysis of melamine and related compounds in dog food with the use of more economical gas chromatography-mass spectrometry (GC-MS) instrumentation.
Large Molecule BioAnalysis
Bioanalysis for large molecules, like Proteins or specific Biotherapeutics, refer to a set of methods, assays, and procedures that enable scientists to analyze specific proteins found in living organisms and the biochemical reactions underlying life processes.
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