Direct immersion thin film solid phase microextraction of polychlorinated n-alkanes in cod liver oil.

A thin film-solid phase microextraction (TF-SPME) method was developed to test for 5 individual polychlorinated n-alkanes (PCAs) from commercial cod liver oil samples. This was accomplished by preparing a novel aluminum supported, hydrophilic-lipophilic balance/polydimethylsiloxane (HLB/PDMS) TF-SPME device that enabled direct immersion extraction from fish oil. Matrix-matched calibration gave a linear range from 0.

Direct-immersion SPME in soy milk for pesticide analysis at trace levels by means of a matrix-compatible coating.

This study demonstrates a newly developed PDMS/DVB/PDMS fiber's suitability for the determination of pesticides in soy milk via direct-immersion solid-phase microextraction (SPME) combined with gas chromatography-mass spectrometry, eliminating the need for extensive sample pre-treatment procedures. Fouling accumulation on the coating surface was further minimized by implementing rapid and effective pre- and post-desorption cleaning steps. Under optimum conditions, the fiber was used to perform over 120 extractions while maintaining RSD values of less than 24.

The efficiency assessment of rehabilitation with DBC method in low back pain patients.

Rehabilitation in patients with low back pain is one of the crucial therapeutic and social problems. This work attempts to present therapeutic procedures according to DBC (Documentation Based Care) treatment concept. The aim of the research was to assess the efficiency of DBC method on the basis of spine mobility in frontal, saggital and transverse plane and also on the basis of patient's subjective feelings.