T
(°C)b

tr
(min)c

Peak
area

tr
(min)

Peak
areac

% Area
of 2-M-2-B
of totald

SCANa

 

 

 

 

 

20

-

-

11.980

     276 420

-

30

-

-

12.028

  1 158 064

-

40

9.174

1 114 861

11.986

  3 536 478

24

50

9.175

2 793 335

11.984

  5 613 065

33

60

9.169

5 691 336

11.983

10 491 636

35

70

9.168

5 532 433

11.985

12 412 558

31

80

9.172

6 510 569

11.985

17 251 559

27

Mean

9.172

4 328 507

 

  7 248 540

30

SD

0.004

2 277 741

 

  6 316 693

  4

RSD%

0.05

52.62

 

  87.14

14.93

 

 

 

 

 

 

SIMa

 

 

 

 

 

20

-

-

-

-

-

30

-

-

11.989

   457 787

  0

40

9.171

233 543

11.984

   545 015

30

50

9.170

386 850

11.984

1 035 640

27

60

9.175

609 005

11.985

1 622 511

27

70

9.178

819 173

11.986

2 352 676

26

80

9.188

782 252

11.990

3 369 163

19

Mean

9.176

566 165

11.986

1 563 799

26

SD

0.007

252 653

  0.003      

1 133 600

  4

RSD%

0.08

44.63

  0.02

72.49

16.22

a 200 ng/L and 100 ng/L composite standard of 2-MIB/GSM in MQ water, for full scan and SIM modes respectively
b Sample purge temperature
c Retention times of target compounds
d Calculated as follows: [(Area of 2-M-2-B/(area of 2-M-2-B + area of 2-MIB)]100 using TIC response
Table 4: Effect of sample purge temperature on dehydration and sensitivity of 2-MIB.