TDS 3 Brochure.pdf

Online analysis with the TDS
• The GERSTEL Online TDS G
is designed for the continuous
analysis of compounds in air,
gas streams or large volume
headspace. It features automatic
sample volume contol and
reversed sample desorption flow.
Sample taken from rape plants
Extracted ion chromtogram. The figure shows the mass traces
m/z = 50 (ISTD) and m/z = 93 (monoterpene).
Abundance
22 000
21 000
20 000
19 000
18 000
17 000
16 000
15 000
14 000
13 000
12 000
11 000
10 000
9 000
8 000
7 000
6 000
5 000
4 000
3 000
2 000
1 000
alpha-Thujene
alpha-Pinene
n-Decan, d22 (ISTD)
Sabinene
Myrcene
beta-Pinene
alpha-Phellandrene
alpha-Terpinene
Limonene
beta-Phellandrene
Eucalyptole
0
Time 28.00 29.00 30.00 31.00 32.00 33.00 34.00 35.00
gamma-Terpinene
Terpinolene
Outdoor Air Sample
spiked with a 22 Compound Standard
Transfer of Fraction #1 (pre-Benzene) onto the Polar Column
Abundance
6000
4000
10-14
3 68 9 15 16 18
4
2
5
7
1
1 Ethane 10 1,3-Butadiene
2 Acetylene 11 trans-2-Butene
3 Propane 12 cis-2-Butene
4 Propylene 13 i-Butylene
5 i-Butane 14 2-Methylbutane
6 n-Butane 15 n-Pentane
7 Chlormethane 16 Chlorethane
8 Vinylchloride 17 1,2-Dichlorethane
9 1-Butene 18 n-Hexane
2000
17
Time--> 4.00 8.00 12.00
16.00
Transfer of Fraction #2 (past Benzene) onto the Polar Column
Abundance
8000
19
20
21 22
19 Benzole
20 Xylene
21 Ethylbenzole
22 o-Xylene
6000
4000
2000
Time--> 4.00 8.00 12.00
16.00