Water
Soil
Restek
Extraction
Extraction
SPE-Cleanup
MDL
MDL
Compound
Recovery (%)
Recovery (%)
Recovery (%)
Liquid (ng/L)
Soil (µg/Kg)
tetrabutyl tin
83
86
92
29.9
0.45
tributyl tin
110
96
99
20.9
0.39
dibutyl tin
75
66
96
15.7
0.46
tripentyl tin (SSTD)
NA
NA
101
NA
NA
monobutyl tin
38
36
118
19.6
0.14
Table I
Commercial LaboratoryResultsUsing theProposedMethod.
5
30m, 0.32mm ID, 1.0µmRtx
®
-35 (cat.# 10454). Direct injection using a Uniliner
®
(cat.# 20335).
Concentration:
5pg on-column. .
Head pressure:
15psi, constant.
Oven temp.:
100°C (hold 1min.) to 285°C@ 10°C/min. (hold 10min.);
Detector:
PFPDModel 5380 courtesy of O.I. Analytical Corp., College Station, TX.
Figure 3
PFPD* Increases Sensitivity by 100 timesWhenAnalyzingOrganoTinCompoundsUsing thisMethod.
min. 8
10
12
14
16
18
1. tetrapropyl tin
2. tetrabutyl tin
3. tributyl tin
4. dibutyl tin
5.monobutyl tin
1
2
3
4
5
Figures 1& 2
500pg of DerivatizedOrganoTinCompounds SeparatedWell onRtx
®
-5 andRtx
®
-35ColumnsUsingGC/FPD.
30m, 0.32mm ID, 1.0µmRtx
®
-5 and Rtx
®
-35 columns (cat.# 10254 and 10454) 3µl direct injection
using a Uniliner
®
(cat.# 20335)
.
Concentration:
~500pg on-column.
Head pressure:
15psi, constant.
Oven temp.:
100°C (hold 1min.) to 285°C
@ 10°C/min. hold 10min.;
Inj. & det. temp.:
250°C;
Carrier gas:
He
Figure 1:Rtx
®
-5
Figure 2:Rtx
®
-35
1. tetrapropyl tin
2. tetrabutyl tin
3. tributyl tin
4. dibutyl tin
5. tripentyl tin
6.monobutyl tin
min. 6
8
10
12
14
1
2
3
4
5
6
min. 6
8
10
12
14
1
2
3
4
5
6
*Tailing is a function of this detector.
RestekCorporation
(800) 356-1688
