Applications

Clinical laboratory extraction of urine metabolites using WAX SPE cartridges

Using WAX SPE to Detect Organic Acid Metabolites in Urine

Why Profile Organic Acid Metabolites in Urine? Organic acid metabolites are intermediates of amino acid, fatty acid, and carbohydrate metabolism, and their urinary levels serve as critical biomarkers for inherited metabolic disorders, mitochondrial dysfunction, and nutritional status. Accurate profiling using weak anion exchange (WAX) SPE enables sensitive, selective detection of these acidic compounds. Characteristics of […]

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Laboratory extraction of veterinary drug residues from milk using HLB SPE

Extraction of Veterinary Drug Residues from Milk Using HLB SPE

Extraction of Veterinary Drug Residues from Milk Using HLB SPE 1. Regulatory Importance of Veterinary Drug Monitoring Veterinary drugs are widely used in dairy production to prevent and treat diseases, but their residues in milk pose potential health risks to consumers, including allergic reactions, antimicrobial resistance, and endocrine disruption. Regulatory agencies such as the FDA,

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SPE cartridge method used to isolate alkaloids from herbal medicine extracts

Developing an SPE Cleanup Protocol for Herbal Medicine Alkaloids

Herbal Matrices: A Unique Analytical Challenge Herbal medicines contain complex chemical mixtures, including alkaloids, flavonoids, tannins, pigments, and other secondary metabolites. This complexity poses significant challenges for targeted analysis. The matrix effect in LC-MS can suppress or enhance ionization of target analytes, leading to inaccurate quantification. Developing a robust solid-phase extraction (SPE) cleanup protocol is

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Laboratory SPE workflow used for PFAS environmental testing

Sample Preparation Strategy for PFAS Analysis Using SPE Cartridges

Introduction to PFAS Contamination Issues Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals widely used in industrial and consumer products due to their unique water- and oil-repellent properties. However, their extreme persistence in the environment and potential adverse health effects—including immune suppression, thyroid disruption, and certain cancers—have made them a top priority

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Laboratory workflow extracting artificial sweeteners from wastewater with HLB SPE

Using HLB SPE to Monitor Artificial Sweeteners in Wastewater

Environmental Occurrence of Artificial Sweeteners Artificial sweeteners, such as sucralose, acesulfame-K, and saccharin, are widely used as sugar substitutes in food, beverages, and pharmaceuticals. Due to their high water solubility, chemical stability, and resistance to biodegradation, these compounds pass largely unchanged through wastewater treatment plants and have been detected in surface waters, groundwater, and even

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MCX SPE cartridge extraction of antidepressant drugs from plasma samples in analytical laboratory

Optimizing MCX SPE for Quantification of Antidepressants in Human Plasma by LC-MS/MS

Analytical Challenges in Antidepressant Quantification Quantifying antidepressants such as selective serotonin reuptake inhibitors (SSRIs), serotonin-norepinephrine reuptake inhibitors (SNRIs), and tricyclic antidepressants (TCAs) in human plasma presents significant analytical challenges. These compounds are present at low nanogram-per-milliliter concentrations, requiring high sensitivity and selectivity. Plasma is a complex matrix containing proteins, lipids, salts, and other endogenous compounds

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SPE purification of flavonoids from green tea extracts

SPE Isolation of Flavonoids from Green Tea Samples

Flavonoid Compounds in Green Tea (Catechins) Green tea is rich in flavonoids, particularly catechins such as epigallocatechin gallate (EGCG), epigallocatechin (EGC), epicatechin gallate (ECG), and epicatechin (EC). These polyphenolic compounds contribute to the antioxidant, anti-inflammatory, and cardioprotective properties of green tea. Their isolation and purification are critical for nutritional research, quality control, and functional food

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SPE cartridge extraction of heavy metal chelates from water samples

SPE Sample Preparation for Trace Heavy Metal Chelates in Water

SPE Sample Preparation for Trace Heavy Metal Chelates in Water Heavy metal contamination in environmental waters remains a critical global concern. While regulatory frameworks often target total metal concentrations, the speciation and chelation state of metals profoundly impact their toxicity, bioavailability, and environmental fate. Chelating agents—both naturally occurring (humic substances, amino acids) and anthropogenic (EDTA,

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SPE purification of terpene compounds from essential oils

SPE Isolation of Terpenes from Essential Oil Samples

Chemical Diversity of Terpenes in Essential Oils Essential oils are complex natural mixtures containing a wide variety of volatile organic compounds, with terpenes and terpenoids being the principal constituents. Terpenes are classified based on the number of isoprene (C5H8) units: monoterpenes (C10), sesquiterpenes (C15), diterpenes (C20), and triterpenes (C30). Monoterpenes and sesquiterpenes are the most

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SPE cartridge extraction of pharmaceutical metabolites from wastewater

SPE Extraction of Pharmaceutical Metabolites from Hospital Wastewater

Hospital Wastewater as a Source of Pharmaceutical Metabolites Hospital wastewater is a significant point source for pharmaceutical residues and their metabolites, including antibiotics, analgesics, antidepressants, and contrast media. These compounds enter wastewater streams through patient excreta, disposal of unused medications, and laboratory activities. Unlike municipal sewage, hospital effluent contains higher concentrations of active pharmaceutical ingredients

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