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1438 Pang et al.: Journal of AOAC International Vol. 98, No. 5, 2015
Table 2. The number of test data of AOAC collaborative study provided by 30 laboratories from 11 countries and regions
Results of target pesticides Monitoring ions Ion abundance Calibration curve
Results of
precollaborative study
Lab GC/MS
GC/MS/
MS
LC/MS/
MS GC/MS
GC/MS/
MS
LC/MS/
MS GC/MS
GC/MS/
MS
LC/MS/
MS GC/MS
GC/MS/
MS
LC/MS/
MS GC/MS
GC/MS/
MS
LC/MS/
MS
1 124 124 126 972 648 652 648 324 326 40 40 40 200 200 200
2 124 – a – 972 – – 648 – – 40 – – 200 – –
3 124 – 126 972 – 652 648 – 326 40 – 40 200 – 200
4 124 – 126 972 – 652 648 – 326 40 – 40 100 – 100
5 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
6 124 – 126 972 – 652 648 – 326 40 – 40 200 – 100
7 – – 126 – – 652 – – 326 – – 40 – – 200
8 124 – 126 972 – 652 648 – 326 40 – 40 200 – 100
9 124 – 126 972 – 652 648 – 326 40 – 40 200 – 200
10 124 124 126 972 648 652 648 324 326 40 40 40 200 200 200
11 124 – 126 972 – 652 648 – 326 40 – 40 100 – –
12 124 – 126 972 – 652 648 – 326 40 – 40 100 – 100
13 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
14 124 – – 972 – – 648 – – 40 – – 40 – –
15 124 – – 972 – – 648 – – 40 – – 200 – –
16 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
17 – – 126 – – 652 – – 326 – – 40 – – 100
18 – 124 126 – 648 652 – 324 326 – 40 40 200 – 200
19 124 – – 972 – – 648 – – 40 – – 200 – –
20 – 104 126 – 608 652 – 304 326 – 40 40 – – –
21 – 104 67 – 608 534 – 304 267 – 40 40 – 140 140
22 124 – 126 972 – 652 648 – 326 40 – 40 200 – 200
23 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
24 – 124 124 – 648 648 – 324 324 – 40 40 – 200 200
25 123 – 126 969 – 652 646 – 326 40 – 40 – – 100
26 – 118 – – 616 – – 308 – – 38 – – 200 –
27 – 124 126 – 648 652 – 324 326 – 40 40 – 100 100
28 118 118 120 939 616 620 626 308 310 39 38 38 200 200 95
29 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
30 – 124 126 – 648 652 – 324 326 – 40 40 – 200 200
Sum 1977 1808 3083 15516 9576 16146 10344 4788 8073 639 596 998 2740 2440 3735
Total 6868 41238 23205 2233 8915
a – = This method was not used.