A simple, rapid, sensitive, and non-consuming solvent method for the determination of cotinine in urine was developed, based on sample preparation by the relatively new technique microextraction in packed sorbent (MEPS) and analysis by GC-MS. This optimized method was compared with conventional solid-phase extraction/liquid-liquid extraction method used as reference. The wide linear range (5-5,000 ng/mL) and high sensitivity of the MEPS method (limit of detection 0.8 ng/mL) allow application to analysis of urine from smokers as well as non-smokers susceptible to passive smoking.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00216-009-3236-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Metal organic framework derived composite as a new sorbent for micro-solid phase extraction of parabens from breast milk samples.
J Chromatogr A
December 2024
School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
In an attempt to enhance the adsorptive properties while addressing the limitations associated with powdered nature, zeolitic imidazolate framework (ZIF-67)-derived cobalt-doped nanoporous carbon (Co-NPC) was incorporated into chitosan and then shaped like hollow fiber by a simple casting method. Further modification with polyaniline (PANI) was also performed to improve extraction efficacy. The applicability of the modified hollow fibers was then investigated by packing them into a cartridge and utilizing them for conducting hollow fibers-packed in-cartridge micro solid-phase extraction (HF-IC µ-SPE) of parabens including methylparaben (MP), ethylparaben (EP), and propylparaben (PP) from human breast milk samples.
View Article and Find Full Text PDFA comprehensive review of portable syringe systems using micropipette-based extraction techniques for metal analysis.
J Chromatogr A
November 2024
Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia. Electronic address:
The release of harmful compounds, particularly dangerous metal ions, into the environment has drawn deep concern from the scientific community. Therefore, it has become common in research to evaluate and quantify the harmful concentrations in the presence of these metal ions in several real samples (food, water, and biological samples). To increase sensitivity and lessen the impact of the matrix, sample pretreatment is a helpful strategy to implement before analysis.
View Article and Find Full Text PDFInfection of In Vivo and In Vitro Pines with the Pinewood Nematode Bursaphelenchus xylophilus and Isolation of Induced Volatiles.
J Vis Exp
September 2024
INIAV, I.P., National Institute for Agrarian and Veterinary Research, I.P.; GREEN-IT Bioresources for Sustainability, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa (ITQB NOVA).
The pinewood nematode (PWN) is a phytoparasite that causes pine wilt disease (PWD) in conifer species. This plant parasitic nematode has heavily contributed to pine deforestation in Asian countries, e.g.
View Article and Find Full Text PDFDevelopments and Applications of Molecularly Imprinted Polymer-Based In-Tube Solid Phase Microextraction Technique for Efficient Sample Preparation.
Molecules
September 2024
School of Pharmacy, Shujitsu University, Nishigawara, Okayama 703-8516, Japan.
Article Synopsis
- Sample preparation is still a major challenge in analytical processes, despite improvements in instruments, with solid-phase extraction becoming favored over traditional methods due to its simplicity and reduced solvent needs.
- Various microextraction techniques, particularly in-tube solid-phase microextraction (IT-SPME), have been developed for more efficient sample handling and automation, offering a "green extraction technique" option that minimizes solvent use.
- Innovative materials like molecularly imprinted polymers (MIPs) are enhancing extraction efficiency; MIPs are custom-designed adsorbents that are created through a specific fabrication process to recognize and selectively bind target molecules.
In-tube solid-phase microextraction of polycyclic aromatic hydrocarbons from refinery water samples using UiO-66/polyacrylonitrile electrospun nanofibers followed by high-performance liquid chromatography-ultraviolet detection.
J Sep Sci
September 2024
Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Iran.
Article Synopsis
- A new method called fiber-in-tube solid-phase microextraction (FIT-SPME) was developed to extract and analyze nine polycyclic aromatic hydrocarbons from refinery water samples using high-performance liquid chromatography with a UV detector.
- * The method utilizes a special material, UiO-66, applied to stainless steel wires to enhance extraction efficiency.
- * Results showed strong accuracy with a wide detection range and low relative standard deviations, indicating the method's reliability for analyzing water samples with high dissolved solids.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!