์ฝ˜ํ…์ธ ๋กœ ๊ฑด๋„ˆ๋›ฐ๊ธฐ
Merck

A comparative study of the analysis of human urine headspace using gas chromatography-mass spectrometry.

Journal of breath research (2008-09-01)
S Smith, H Burden, R Persad, K Whittington, B de Lacy Costello, N M Ratcliffe, C S Probert
์ดˆ๋ก

First-void urine samples were obtained from 24 elderly, asymptomatic men (median age 62.9 years). The headspace above pH adjusted urine samples were extracted using a carboxen/polydimethylsiloxane solid phase micro-extraction fibre and the volatile organic compounds analysed by gas chromatography/mass spectrometry. A total of 147 compounds were identified in the headspace of urine. The acidified samples recorded a total of 92 compounds, 27 of which were ubiquitous, basified samples 70 compounds, with 12 ubiquitous and unmodified pH samples 49, with 6 ubiquitous. Five compounds were ubiquitous irrespective of pH: acetone, methylene chloride, 4-heptanone, 2-pentanone and 2-butanone. A comparative analysis of unfrozen and frozen-thawed urine (stored at room temperature for 0, 1 and 8 h) showed that samples retained the same number of compounds although variations in the peak areas for some compounds were observed.

MATERIALS
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Supelco
Carboxenยฎ Adsorbent, matrix Carboxenยฎ 569, 20-45 mesh, bottle of 500 g
Supelco
Carboxenยฎ 1000 Reversible SPE Tube, 200 mg/mL, pk 30
Supelco
Carboxenยฎ 572 for Tobacco Smoke, Adsorbent Bed Wt: 300 mg, cartridge size 3 mL, pkg of 50 ea
Supelco
SPME fiber assembly Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 7 ฮผm(PDMS, needle size 23 ga, for use with autosampler
Supelco
SPME Fiber Assembly Polydimethylsiloxane/Divinylbenzene (PDMS/DVB), df 65 ฮผm(PDMS/DVB, needle size 23 ga, PDMS/DVB StableFlex, for use with autosampler
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 75 ฮผm(CAR/PDMS, needle size 23 ga, for use with manual holder
Supelco
Carboxenยฎ Adsorbent, matrix Carboxenยฎ 1000, 40-60 mesh, bottle of 50 g
Supelco
SPME Fiber Assembly Polydimethylsiloxane/Divinylbenzene (PDMS/DVB), df 65 ฮผm(PDMS/DVB, for use with autosampler, needle size 23 ga
Supelco
SPME fiber assembly Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, for use with manual holder
Supelco
SPME Sampling Stand, for use with 15 mL vials
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 85 ฮผm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler
Supelco
Carboxenยฎ Adsorbent, matrix Carboxenยฎ 564, 20-45 mesh, pack of 144 ร— 290 mg
Supelco
SPME fiber assembly polyacrylate (PA), df 85 ฮผm(PA, for use with autosampler, needle size 23 ga
Supelco
SPME fiber assembly Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with manual holder or autosampler, fiber L 2 cm
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 85 ฮผm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler
Supelco
SPME fiber assembly Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, StableFlex
Supelco
SPME fiber assembly Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 7 ฮผm(PDMS, needle size 24 ga, for use with autosampler
Supelco
SPME fiber assembly polyacrylate (PA), df 85 ฮผm(PA, for use with manual holder, needle size 24 ga
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 75 ฮผm(CAR/PDMS, needle size 23 ga, for use with autosampler
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 30 ฮผm(PDMS, needle size 24 ga, for use with autosampler
Supelco
SPME fiber assembly Polydimethylsiloxane (PDMS), df 100 ฮผm(PDMS, for use with autosampler, needle size 24 ga
Supelco
SPME fiber assembly polyacrylate (PA), df 85 ฮผm(PA, for use with autosampler, needle size 24 ga
Supelco
SPME Sampling Stand, for use with 4 mL vials
Supelco
SPME Portable Field Sampler, coating PDMS/DVB
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 75 ฮผm(CAR/PDMS, for use with manual holder, needle size 24 ga
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 85 ฮผm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber
Supelco
SPME Portable Field Sampler, coating CAR/PDMS
Supelco
SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS), df 75 ฮผm(CAR/PDMS, needle size 24 ga, for use with autosampler