July 8, 2022 published

Sampler for Skin Gases

MonoTrap SG DCC18
Enable to Absorb Diffusion Gases from The Skin

MonoTrap SG DCC18 is a sampler for skin gases to use monolithic silica adsorption with high adsorption
efficiency, and enable to adsorb diffusion gases from the skin out of touch with human body, but adsorb in spacefrom surface of the skin.
After sampling, it can be stored by attaching it to the transport/extraction vial.

PTFE baseandPTFE seat

Collection patch

MonoTrap
Through-pore

Transport /extraction vial

Meso-pore

Silica Monolith Structure【 Specification 】
MonoTrap
C18 containing activated carbon
Desorption method
Solvent extraction
MonoTrap diameter
10 mm
MonoTrap height
1 mm
Surface area of patch
0.594 cm2
Vial volume
6 mL【How to Sampling】
Take out the collection patch from the transport / extraction vial, and fix at position where it is to be collectedskin gases.
*Use of medical tape is recommended for attachment.

Adsorption of skin gas from arm

Adsorption of skin gas from neck

【Extraction】
Remove the collection patch from the transport/extraction vial and pour the extraction solvent into the transport/ extraction vial. The collection patch is then mounted upside down, solvent extraction is performed by ultrasonicirradiation, and the collected components are extracted into a solvent.

Water level should
be higher thansolvent level
Pour solvent for extraction

Screw tightly*Easy to tighten using
attached a rubber sheet.

Turn upside and start ultrasonic【Application】
This is the result of the GC/MS analysis after placed MonoTrap SG DCC18 to the neckon 45 years old man, then solvent extraction is performed by ultrasonic irradiation.
Conditions

SampleSystem
ColumnCollection skin gasesMonoTrap SG DCC186hResponse

The neck on
45 years old man

Col. Temp.
Carrier Gas
Injection
Detection： GC/MS： InertCap Pure-Wax
0.25 mm I.D.×30 m, df=0.25 μm： 45 ℃(3 min) – 15 ℃/min – 250 ℃(5 min)
： He, 1 mL/min： 250 ℃, 1 μL, Split 20:1
： SIM (m/z=43,86 for diacetyl, 70, 83 for trans-2-nonenal)

Extraction← Dichloromethane
500 μLtrans-2-nonenal

diacetyl

GC/MSTime(min)【Calculation of Skin Gases】
From adsorption amount analyzed using GC/MS analysis: W (ng), adsorption time: t(hour), surface area of MonoTrap SG DCC18: S (cm2), desorption flux amount: E canbe calculated. The result of desorption flux of diacetyl calculated on each body sites.
The flux value is different between sites to sites.

E = Desorption flux 【 ng cm-2 h-1 】
W = Adsorption amount 【 ng 】
t = Adsorption time 【 h 】
S’ = Area of collection 【 cm2 】*Examinee : 45 years old man, unit (ng cm-2 h-1)
Presented data is provided by Prof. Sekine, University of Tokai

Reference・ Sekine, Y., Toyooka, S., Watts, S. F.: J. Chromatogr. B, 859, 201-207(2007)
・ Kimura, K., Sekine, Y. et al., J. Chromatogr. B, 1028, 181-185(2016)
・ Furukawa, S., Sekine Y. et al.: J. Chromatogr. B, 1053,60-64(2017)
・ Sekine, Y., Toyooka, S., Watts, S. F.: J. Chromatogr. B, 859, 201-207(2007)
・ Kimura, K., Sekine, Y. et al., J. Chromatogr. B, 1028, 181-185(2016)
・ Furukawa, S., Sekine Y. et al.: J. Chromatogr. B, 1053,60-64(2017)
・ Kimura, K. et al.: Abstract of academic conference for the Society of Indoor Environment, Japan,202-203(2016)

【Ordering】
Description
MonoTrap SG DCC18Qty.
10pairs
20pairs

Cat.No.
1050-70001
1050-70002

Note 1) 1 Kit of MonoTrap SG DCC18 is a set of transport/extraction vial and the collection patch.
Note 2) 1 pc robber is in 1 pk MonoTrap SG DCC18.
Note 3) Please prepare fixing tape.

GL Sciences disclaims any and all responsibility for any injury or damage which may be caused by this data directly or indirectly.
We reserve the right to amend this information or data at any time and without any prior announcement. Please note that , in the interests of continuous improvement, models orspecifications are subject to change without notice. Please also note that the company name and product name appearing in this catalogue are the trademark or registeredtrademark of each corresponding company. In the descriptions in this catalogue, TM and R marks are not used.

Published in Japan, July 8, 2022(PDF)
AA1074-20220708PDF