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Figure 1 Chlo rinated pesticide residu es in olive oil are easily separated
on either Rtx®-CLPesticid es 2 or Rxi®-SSil MS columns.
A. Rtx®-CLPesticides2
11 12 131415 18 19 20
4
9 10
5
8
16
6 V
.. .. ,.1 ~ Jl~ ..~ 1 .
8 9 10 11 min.
GCJF01043
B. Rxi®-SSii MS 14
3 9,10 1112 15 18 20 19
4
13
8
16
5
7
I I! I
6
,II A I I I
17
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25min.
GC_FF01044
Column: Rt -CLPesticides2,30m,
0.25mm10, 0,20llm (cat.# 11323)
Sample: 10llg/mLOrganochlorine Pesticide
Mix AB# 3 (cat.# 32415)
inolive oil
Inj.: l!JL,splitless(hold 0.5min.),
3.5mm single gooseneckliner
(cat.# 20962) packedwithwool
Inj. ternp.: 225' C
Carrier gas: helium, constant flow
Flowrate: I rnt/rnin,
Oventemp.: 140'C(hold 0.5min.) to 268' C@
20°C/min,to 290°C@ 3' C
330' C(hold 5 rnin.)@ 20' C/ min.
Del: MS
Transfer line temp.: 320°C
Ionization: EI
Mode: SIM
Compound Quant. ion
*1.a -BHC 219
2.y-BHC 219
3.~-BHC 219
4.8-BHC 219
5. heptachlor 272
6.aldrin 263
7. heptachlor epoxide 263
8.y-chlordane 272
9.a-chlordane 272
10. endosulfan I 195
11.4,4'-DDE 246
12. dieldrin 79
13. endrin 263
14. 4,4'-DDD 235
15.endosulfanII 195
16. 4,4'-DDT 235
17, endrinaldehyde 67
18.endosulfansulfate 272
19. methoxychlor 227
20. endrin ketone 67
* notpresent
Ql
181
181
181
181
237
293
237
237
237
207
318
263
281
165
207
165
250
229
274
317
Global RESTEKAdvantage · 9·
comparable to conventional SPE- without the necessi­
ty of vacuum manifolds or high pressure systems. The
GPC method attained recoveries of > 95%. However
this method requires large amounts of solvent and
takes over twice as long as other method s.
The dSPE method shown here is an efficient, cost­
effective way to clean up chlorinated pesticide
residues in olive oil. With good recoveries and mini mal matrix interference, it is an easy way to reduce
solvent usage, compared to conventional SPE, and is
more cost-effective than GPc.
References
1. C. Lentza-Rizos, E.J. Avramides, Rev. Environ. Contam.Toxicol, 141(1995)
111.
2. S, Cunha, S. Lehotay, K. Mastovska, J. Sep.Sci. 30(2007) 620.
3. M. Crawford, M. Halvorson, J. Stevens,The Examination andAutomation
ofGPC, 5PEandQuEChERSUtilized in ExtractingPesticides fromOlive Oil.
HPLC2008poster presentation.
Product Listing
dSPE Tube for Clean-Up of Pesticide Residue
Samples
Description
2mLMicro-Ce
Material
ntrifugeTubes fo
Methods
r dSPE
qty. cat#
Resprep
Q250
150mg MgSO"
50mgPSA AOAC2007,1 100-pk. 26124
PSA-primary and secondary amine exchange material.
Organochlorine Pesticide Mix AB # 3
(20 components)
aldrin dieldrin
a -BHC endosulfan I
P-BHC endosulfan II
o-BHC endosulfan sulfate
y-BHC (lindane) endrin
a -chlordane endrin aldehyde
y-chlordane endrin ketone
4,4'-000 heptachlor
4,4'-00E heptachlor epoxide (isomer B)
4,4'-00T methoxychlor
2,00011g/ mL each in hexane:toluene (1:1), ImL/ ampul
cat. # 32415 ea.
Rtx®-CLPesticides2 Columns (fused silica)
ID df temp.limits length cat. #
0.25mm 0,20 -60 to 320/340' C 30-Meter 11323
Rxi®-SSii MS Columns (fused silica)
(Crossbond" , selectivity close to 5%diphenyl/ 95%dimethyl polysiloxane)
ID df temp. limits length cat. #
0.25mm 0,25 -60 to330/350'C 30-Meter 13623
For more SPE products, please
visit us at or
contact your local
Restek representative.
Q3
109
109
109
109
100
220
81
65
65
241
176
277
81
199
199
345
239
281
Website : E-mail : TelNo : 03 9762 2034 . . . in AUSTRALIA