128 results
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2. Simultaneous determination of 24 or more acidic and alkaline phytohormones in femtomole quantities of plant tissues by high-performance liquid chromatography–electrospray ionization–ion trap mass spectrometry
3. Using Zn/Al layered double hydroxide as a novel solid-phase extraction adsorbent to extract polycyclic aromatic hydrocarbons at trace levels in water samples prior to the determination of gas chromatography–mass spectrometry
4. Determination of 1-hydroxypyrene in human urine by HPLC with electrochemical detection at a boron-doped diamond film electrode
5. FI on-line chemiluminescence reaction for determination of MCPA in water samples
6. Determination of steroid hormones in blood by GC–MS/MS
7. First results on Fe solid-phase extraction from coastal seawater using anatase TiO2 nano-particles
8. Comparison of off- and in-line solid-phase extraction for enhancing sensitivity in capillary electrophoresis using ochratoxin as a model compound
9. Using bamboo charcoal as solid-phase extraction adsorbent for the ultratrace-level determination of perfluorooctanoic acid in water samples by high-performance liquid chromatography–mass spectrometry
10. Electrospun polymer nanofibers as a solid-phase extraction sorbent for the determination of trace pollutants in environmental water
11. Sensitive determination of thiamethoxam, imidacloprid and acetamiprid in environmental water samples with solid-phase extraction packed with multiwalled carbon nanotubes prior to high-performance liquid chromatography
12. Elimination of 7-aminoclonazepam in urine after a single dose of clonazepam
13. Characterization of liquid chromatography-tandem mass spectrometry method for the determination of acrylamide in complex environmental samples
14. Application of graphene for the analysis of pharmaceuticals and personal care products in wastewater
15. Applications of monolithic solid-phase extraction in chromatography-based clinical chemistry assays
16. Non-invasive detection of drug toxicity in rats by solid-phase extraction and MALDI-TOF analysis of urine samples
17. Enantioselective analysis of zopiclone in rat brain by liquid chromatography tandem mass spectrometry
18. Determination of biocides in different environmental matrices by use of ultra-high-performance liquid chromatography–tandem mass spectrometry
19. Application of the molecularly imprinted solid-phase extraction to the organophosphate residues determination in strawberries
20. Determination of nitrotyrosine in Arabidopsis thaliana cell cultures with a mixed-mode solid-phase extraction cleanup followed by liquid chromatography time-of-flight mass spectrometry
21. Rapid narrow band elution for on-line SPE using a novel solvent plug injection technique
22. Comparison of dialysis and solid-phase extraction for isolation and concentration of dissolved organic matter prior to Fourier transform ion cyclotron resonance mass spectrometry
23. Monolithic molecularly imprinted solid-phase extraction for the selective determination of trace cytokinins in plant samples with liquid chromatography–electrospray tandem mass spectrometry
24. Application of microextraction by packed sorbent to isolation of psychotropic drugs from human serum
25. Environmental analysis of alcohol ethoxylates and nonylphenol ethoxylate metabolites by ultra-performance liquid chromatography–tandem mass spectrometry
26. Molecularly imprinted polymers for selective extraction of synephrine from Aurantii Fructus Immaturus
27. Trace analysis of environmental matrices by large-volume injection and liquid chromatography–mass spectrometry
28. Fluoridized iron phosphate as a novel adsorbent for selective separation/isolation of cytochrome c
29. Bubble cell for magnetic bead trapping in capillary electrophoresis
30. Development and validation of a reference measurement procedure for certification of phenytoin, phenobarbital, lamotrigine, and topiramate in human serum using isotope-dilution liquid chromatography/tandem mass spectrometry
31. Multi-walled carbon nanotubes as solid-phase extraction adsorbents for the speciation of cobalamins in seafoods by liquid chromatography
32. Synthesis of molecularly imprinted polymers via ring-opening metathesis polymerization for solid-phase extraction of bisphenol A
33. The UHPLC-DAD fingerprinting method for analysis of extracellular metabolites of fungi of the genus Geosmithia (Acomycota: Hypocreales)
34. Determination of nine high-intensity sweeteners in various foods by high-performance liquid chromatography with mass spectrometric detection
35. Application of molecularly imprinted polymer solid-phase extraction for salivary cotinine
36. Targeted analysis of sphingoid precursors in human biofluids by solid-phase extraction with in situ derivatization prior to μ-LC-LIF determination
37. Molecular imprinting in ionic liquid-modified porous polymer for recognitive separation of three tanshinones from Salvia miltiorrhiza Bunge
38. Evaluation of extraction methods for quantification of aqueous fullerenes in urine
39. Flow injection photoinduced chemiluminescence determination of imazalil in water samples
40. Molecularly imprinted polymers: synthetic receptors in bioanalysis
41. Simultaneous determination of disulfiram and bupropion in human plasma of alcohol and nicotine abusers
42. Multiresidue method for the determination of 32 human and veterinary pharmaceuticals in soil and sediment by pressurized-liquid extraction and LC-MS/MS
43. Multi-walled carbon nanotubes as solid-phase extraction adsorbent for the ultra-fast determination of chloramphenicol in egg, honey, and milk by fused-core C18-based high-performance liquid chromatography–tandem mass spectrometry
44. Development and validation of a liquid chromatography–tandem mass spectrometry method for simultaneous quantification of p-aminohippuric acid and inulin in rat plasma for renal function study
45. Highly sensitive determination of polycyclic aromatic hydrocarbons in ambient air dust by gas chromatography-mass spectrometry after molecularly imprinted polymer extraction
46. SPE and LC-MS/MS determination of 14 illicit drugs in surface waters from the Natural Park of L’Albufera (València, Spain)
47. Analysis of thyroid hormones in serum by liquid chromatography-tandem mass spectrometry
48. Solid-phase extraction for purification of alkannin/shikonin samples and isolation of monomeric and dimeric fractions
49. Highly selective and non-conventional sorbents for the determination of biomarkers in urine by liquid chromatography
50. Certification of drugs of abuse in a human serum standard reference material: SRM 1959
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