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Method efficiencies of GC-MS, GC-MS/MS and LC-MS/MS
Based on the results from the statistical analysis of AOAC method efficiency software, all the parameters
derived from the experiment have fulfilled the technical requirements of AOAC standards.
Method efficiency of GC-MS determination of 20 pesticides (16 Labs)
Samples
Avg, Rec, %
RSD
r
, %
RSD
R
, %
HorRat
Green tea fortified samples
87.0-96.0
2.1-4.9
6.5-9.9
0.3-0.5
Oolong tea fortified samples
81.0-91.1
2.8-7.8
12.5-25.0
0.5-1.3
Oolong tea aged samples
-
2.1-6.1
9.1-20.0
0.4-1.0
Green tea incurred
-
3.3-4.0
12.2-23.0
0.7-1.0
Method efficiency of GC-MS/MS determination of 20 pesticides (14 Labs)
Samples
Avg, Rec, %
RSD
r
, %
RSD
R
, %
HorRat
Green tea fortified samples
87.0-97.1
3.1-6.0
6.6-14.8
0.3-0.7
Oolong tea fortified samples
77.1-90.8
1.4-5.4
7.0-32.7
0.4-1.3
Oolong tea aged samples
-
4.6-9.6
21.7-34.7
1.1-1.8
Green tea incurred
-
5.6-5.6
14.1-22.2
0.8-0.9
Method efficiency of LC-MS/MS determination of 20 pesticides (23 Labs)
Samples
Avg, Rec, %
RSD
r
, %
RSD
R
, %
HorRat
Green tea fortified samples
91.7-97.2
4.9-8.6
8.0-15.8
0.3-0.6
Oolong tea fortified samples
81.7-93.8
3.6-10.5
13.8-30.4
0.4-1.3
Oolong tea aged samples
-
5.1-9.3
16.8-35.1
0.7-1.6
Green tea incurred
-
8.9-10.8
21.1-24.5
0.8-1.1
An overview on how your organization can obtain feedback for your method
performance?
Date: July 14-Aug 20, 2016. Feedback requested from: 30 collaborative laboratories and 45 laboratories using
Cleanert TPT. The feedback information has been received from a total of 15 laboratories (excluding the information
submitted online), including three overseas laboratories: Japan, Spain and Taiwan of China, and see the table below.
Lab
Organization
Question
1
Question
2
Question
3
Question
4
Question
5
Question
6
Lab-1
Asia pacific technicalcenter, the coca-cola company
Y
N
Y
N
N
Y
Lab-2
Inspection & QuarantineTechnique Centre of Fujian Entry-exit Inspection
and QuarantineBureau
Y
N
N
Y
N
N
Lab-3
HuangshanTea QualityAnd Safety Research Center of Huangshan Entry-
Exit Inspection & Quarantine Bureau
Y
Y
Y
Y
N
N
Lab-4
Food inspection central of CIQ ShenZhen
Y
N
N
Y
N
N
Lab-5
QinhuangdaoEntry-exit Inspection and QuarantineBureau
Y
N
N
Y
N
N
Lab-6
Japan grain inspection association central research laboratory
Y
N
N
N
N
N
*Lab-7
Tundingsubstation, tea research and extension station, executive yuan,(Taiwan)
N
N
N
N
N
N
Lab-8
Tea research institute ChineseAcademy of agricultural sciences
Y
Y
Y
Y
Y
N
Lab-9
EURL-FV, University of Almería
Y
N
Y
N
N
N
Lab-10
Dalianentry-exit inspection and quarantine bureau
Y
N
N
Y
N
N
Lab-11
ICAS Testing Center (Shanghai)
Y
Y
Y
Y
Y
N
Lab-12
BENGBUCenter for Disease Control and prevention
Y
Y
Y
N
N
N
Lab-13
Shanghai BinoTesting Service Co., Ltd
Y
Y
Y
Y
Y
N
Lab-14
DENO TESTING Service (Shanghai)
Y
Y
Y
Y
Y
Y
Lab-15
Tea Research Institute, Chinese Academy of Agricultural Sciences
Y
Y
Y
Y
N
Y
* This lab didn’t use the method, so its feedback is not used for analysis.