Samplea
Temperature
(°C) |
Peak
Area
at ± 9.2 min.b |
Peak
Area
At ± 12.0 min.b |
%
Area of
2-M-2-B of totalc |
Peak
Area
At ± 15.2 min.b |
2-MIB
Area
m/z 95d |
GSM
Area
m/z 112d |
2-MIB
Assay
(ng/L)e |
2-MIB
Accuracy
(%)f |
GSM
Assay
(ng/L)e |
GSM
Accuracy
(%)f |
20 |
ndg |
nd |
|
nd |
nd |
nd |
|
|
|
|
30 |
nd |
nd |
|
nd |
nd |
nd |
|
|
|
|
40 |
20 723 |
45 073 |
31 |
49 310 |
25 845 |
35 975 |
1.44 |
28.80 |
1.13 |
22.60 |
50 |
28 201 |
87 730 |
24 |
103 403 |
54 193 |
75 586 |
3.01 |
60.20 |
2.37 |
47.40 |
60 |
50 705 |
160 373 |
24 |
188 463 |
93 474 |
138 392 |
5.19 |
103.80 |
4.34 |
86.80 |
70 |
52 297 |
221 145 |
19 |
257 964 |
123 511 |
185 826 |
6.85 |
137.00 |
5.82 |
116.40 |
80 |
56 667 |
304 435 |
16 |
356 702 |
174 907 |
256 176 |
9.71 |
194.20 |
8.02 |
160.40 |
Mean |
|
|
23 |
|
|
|
|
|
|
|
SD |
|
|
6 |
|
|
|
|
|
|
|
RSD% |
|
|
25.08 |
|
|
|
|
|
|
|
a5 ng/L composite of 2-MIB/GSM in MQ water
b From the TIC, in SIM mode, by manual integration
c = [(Area of 2-M-2-B/(area of 2-M-2-B + area of 2-MIB)]100, using TIC responses
d from SIM chromatogram, at respective tr; extracted ions m/z 95, 107 (for 2-M-2-B, 2-MIB) and m/z 112 (for GSM)
e By calibration, using the normal composite standards of 2-MIB/GSM in MQ water
f By recovery
g Not detected |
