REDUCING ODOUR SAOMPARATIVE STUDY OF NALOPOMPARATIVE STUDY OF NALOP
BA
March
By: Ardevan B
Foundder of ID
AMPLE DEGRADATIONPHAN TEDLAR® AND PTFE SAMPHAN, TEDLAR® AND PTFE SAMGS
5, 2014
Bakhtari, Ph.D
DES Canada Inc.
Scen
COMPANYCOMPANY
S Canada is the world’s premier supplier dour sampling, storage and surement equipmentsurement equipment.
engineering and manufacturing facility is ted in Toronto, Canada.
d ld ld id h h ducts are sold worldwide through our work of distributors in 37 countries uding Chile, Spain, Italy, Germany, herland, Turkey, US, Uruguay, Malaysia, herland, Turkey, US, Uruguay, Malaysia, ea and China.
Yo
OVERVIEWOVERVIEW
u now belong to the Scentroid Community spanning 3countries 5000+ members.
PRODUCT LINESPRODUCT LINES ‐
d Sm100 Field Olfactometer
SC300 Portable O
OLFACTOMETERSOLFACTOMETERS
SS600 Laboratory Olfactom
Olfactometer
PRODUCT LINES SAPRODUCT LINES – SA
uum Chamber Static Hood
MPLING EQUIPMENTMPLING EQUIPMENT
Diluting SampFlux Chamber
PRODUCT LINESPRODUCT LINES –
dlPTFE Sample Bags Tedlar Sam
Heated P
SAMPLE STORAGESAMPLE STORAGE
lmple Bags Stainless Steel Sample
Purger
OBJECTIVE OOBJECTIVE O
Transportation conditions and delay beodour degradation.
European Canadian and American stan European, Canadian, and American stannew German standard limiting storage
Objective of this study is to demonstrate
1. the effects of sample storage media (PTdegradation during transportation and
2. some of the good practices and techniqsample losses.sample losses.
F THE STUDYF THE STUDY
etween sampling and analysis will cause
ndards impose a 30 hour limit with thendards impose a 30 hour limit with the to 6 hours.
TFE, Tedlar, and Nalophan) on sample storage.
ques in sampling and storage to minimize
EQUIPMEEQUIPME
The Equipment used for this study was theequipment was used in a laboratory configmethod with 2 panelist. p
ENT USEDENT USED
e SM100 Field Olfactometer. The guration using binary forced choice
STUDY 1 – BACKGSTUDY 1 – BACKG
Each Sample bag was filled with Nitrogen a
Sample bagN l hNalophanVirgin TedlarPre‐conditioned TedlarPTFE
GROUND ODOURGROUND ODOUR
and checked in 2 hours.
Odour Concentration measured (OU)94270
STUDY 2 – SAMPLESTUDY 2 – SAMPLE
les were stored at standard temperature andhours.
Odour Degradation for WWTP Odour Degradation for WWTP samplessamples
0000
000
0 2 4 6 8 10 12 14 16 18 20 22STORAGE TIME (HOURS) STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION AT STPDEGRADATION AT STP
d pressure (21C and 1 atm) and analyzed
24
STUDY 2 – SAMPLESTUDY 2 – SAMPLE
les were stored at standard temperature andhours.
Odour Degradation for Agriculture Odour Degradation for Agriculture samplessamples
60
80
100
20
40
0 2 4 6 8 10 12 14 16 18 20STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION AT STPDEGRADATION AT STP
d pressure (21C and 1 atm) and analyzed
22 24
STUDY 2 – SAMPLESTUDY 2 – SAMPLE
les were stored at standard temperature andhours.
Odour Degradation for Compost Odour Degradation for Compost samplessamples
60
80
100
20
40
0 2 4 6 8 10 12 14 16 18 20 22 2STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION AT STPDEGRADATION AT STP
d pressure (21C and 1 atm) and analyzed
24
STUDY 2 – SAMPLESTUDY 2 – SAMPLE
les were stored at standard temperature andhours.
Odour Degradation for Refinery Odour Degradation for Refinery samplessamples
0 2 4 6 8 10 12 14 16 18 20 22 24STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION AT STPDEGRADATION AT STP
d pressure (21C and 1 atm) and analyzed
STUDY 2 – SAMPLESTUDY 2 – SAMPLE
vestigate the rapid odour loss sample bags weentration losses over time.
Material Concentration in the tank (ppm)
A
Nalophan 100
Tedlar® 100
PTFE 100PTFE 100
DEGRADATION AT STPDEGRADATION AT STP
ere sent to the laboratory for analysis of Ben
After 10 min (ppm) After 45 min in (ppm)
51 35
65 53
88 8588 85
STUDY 3 – SAMPLE FRE
eight is subjected to lower pressure and temge were based on 13C and 90 Kpa (0.9 Atm).
Odour Degradation for Odour Degradation for WWTP WWTP samplessamples
2 4 6 8 10 12 14 16 18 20 22 24STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION IN AIR EIGHT
perature than STP. The conditions of
100
N
Odour Degradation for WWTP samples Odour Degradation for WWTP samples subjected to air Freight temp. and Pressuresubjected to air Freight temp. and Pressure
60
70
80
90
UR RED
UCT
ION
30
40
50
0 2 4 6 8 10 12 14 16 18 20
% O
DOU
STORAGE TIME (HOURS) STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
STUDY 3 – SAMPLE FRE
eight is subjected to lower pressure and temge were based on 13C and 90 Kpa (0.9 Atm).
Odour Degradation for Odour Degradation for WWTP WWTP samplessamples
2 4 6 8 10 12 14 16 18 20 22 24STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
DEGRADATION IN AIR EIGHT
perature than STP. The conditions of
100
N
Odour Degradation for WWTP samples Odour Degradation for WWTP samples subjected to air Freight temp. and Pressuresubjected to air Freight temp. and Pressure
60
70
80
90
UR RED
UCT
ION
30
40
50
0 2 4 6 8 10 12 14 16 18 20
% O
DOU
STORAGE TIME (HOURS) STORAGE TIME (HOURS)
Nalophan Tedlar PTFE
STUDY 4 – CROSSSTUDY 4 – CROSS
ples were taken from inlet and outlet of a odoe carton box resulting in cross contamination
00
Outlet SamplesOutlet Samples
00
00
00
00
00
0
00
00
‐1 4 9 14 19 24HOURSHOURS
Nalophan Tedlar PTFE
S CONTAMINATIONS CONTAMINATION
our filter and placed along side each other n of the samples.
3000
Inlet SamplesInlet Samples
1500
2000
2500
3000
OUR UNITS
500
1000
0 5 10 15 20
ODO
HOURSHOURS
Nalophan Tedlar PTFE
STUDY 4 – CROSSSTUDY 4 – CROSS
carton box had a background odour of 8 OU. To the samples being released through the ba
700
800
HeadHead
300
400
500
600
DOUR UNITS
0
100
200
0 5
OD
Nalophan
S CONTAMINATIONS CONTAMINATION
The addition of odour contamination is ag material.
space Odourspace Odour
10 15 20HOURS
Tedlar PTFE Blank
CONCLUCONCLU
1. Samples should be analyzed as soon as
2. The data clearly shows an improved satraditionally used materials such as Natraditionally used materials such as Na
3. When bags are subjected to lower presfurther exposed and therefore odour d
4. This is especially an issue if the bag is fvolume.
USIONSUSIONS
s possible.
mple preservation in PTFE over lophan or even Tedlar®lophan or even Tedlar®.
ssure the permeability of the bag is degradation is accelerated.
filled to 80% or higher of its maximum
CONCLUCONCLU
5. If possible samples of similar type and and preferably for as short a period as
6 that samples that require more than a6. that samples that require more than a should be analyzed using portable olfa
7. The advantages of increased accuracy ginsignificant to the odour degradation freight.
USIONSUSIONS
concentration should be stored together possible.
few hours of transit to a stationary labfew hours of transit to a stationary lab ctometers or field olfactometers.
gained by stationary laboratories is caused by long distance shipping and air
QUESTQUESTTIONS?TIONS?