DET
innovations in chemical detection
Examples:
RTIAITID-1
Analyses
TRAP-DESORB-DETECT
AIR SAMPLING THROUGH CARBOTRAP
AMBIENT WITH TRACE TRICHLOROETHANE
___TRAP INTO
ecvc
REACTOR
--TRAP AT ROOM TEMPERATURE
--1
4-----
TIME
AMBIENT WITHOUT TRICHLOROETHANE
/
TRAP INTO Daoe
__
~"
-TRAP AT ROOM TEMPERATURE
~
I--
1
~
HOUR
RTIAlTI0-1. 1 Llmin ambient Air· 1 hour through
unheated trap, then trap into
90GC
reactor.
PetroleumSourceRock from 3DifferentGeological Sites
4mm
dia.
x
13mmColumn ofSample into Hot RTIAReactor
250
deg.C
TID·1·AIRDetection
Petrol.
Rock
Agricultural
Site
1
Soil
~
I
I
I
I
I
out
in
in
out
in
crushed rocklsoilloosely packed into
%
inch long
column inside 6mm 00 x 4mm 10 glass tube tube insertedand sealed into reactor so incoming
Air flowed through tube 10 and the samples sample tubes inserted/removed as indicated •
peak in signals followed by decay indicates
constituent beingvolatilizedand removed-steady
signal plateau indicates constituent vapor
pressure, but no volatilization/removal.
DETector Engineering
&
Technology, inc.
486
N.WigetLane, WalnutCreek, CA
94598
USA
telephone:
(925) 937-4203
fax:
(925) 937-7581
e-mail:DETplp@aol.com
DESORB/OXIDIZE
&
DETECT
350degC, 2.70A, 256pA f.s.
Wine
Ceramic Rod Dipped into Samples,
then Inserted into Reactor
Urine Diluted
1:10 inWater
TapWater
water based liquid samples - ceramic sample rod
moist with both water and residual organic
material when inserted into the reactor· signals
mostlydue to oxidation products of the organics.
RAMPED TEMPERATURE
OXIDIZE
&
DETECT
5 microLiters of sample
injected onto glass \/Vool
320 pA
f .s.
NON-FATMILK
12 9 Sugar (S)
8g Protein (P)
S
FLAVORED JUICE DRINK
26 9 Sugar
I
I
I
50
150
250
350
dog C
variation of the RTIA technique - TID-1 detector
mounted onto a
GC
·2 inch long 6mm 00 x 4mm
10 open end glass tube packed with glass wool
located insideGCovenand connected todetector
inlet - sample pump at detector exit pulled Air
through the system - liquid samples injected onto
glass wool
column oven temperature
programmed to provide profile of oxidation
product signals vs. temperature.
Website :
E-mail :
TelNo : 03 9762 29034 . . . inAUSTRALIA
