References
1. AOAC Official Method 2007.01 Pesticide Residues in Foods by
Acetonitrile Extraction and Partitioning with Magnesium Sulfate, S.
Lehotay,
Journal of AOAC International
. Vol. 90, No. 2, (2007) 485-520.
2. Rapid Method for the Determination of 180 Pesticide Residues in Foods
by Gas Chromatography/Mass Spectrometry and Flame Photometric
Detection, M. Okihashi,
Journal Pesticide Science
. 304 (4), (2005) 368-377.
3. Commission Decision of August 12, 2002 Implementing Council Directive
96/23/EC Concerning the Performance of Analytical Methods and the
Interpretation of Results,
Official Journal of European Communities
.
17.8.2002.
4. MRLs for tea as listed at
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Component
Avg Conc
Theo Conc
% RSD
% Recovery
Dichlorvos
158
150
4.5
105
Molinate
64
75
6.8
85
Trifluralin
66
75
4.2
89
Ethoprophos
64
75
3.4
86
Di-allate
59
75
4.1
79
Phorate
60
75
4.3
80
Propyzamide (Pronamide)
133
150
7.9
88
Atrazine
61
75
5.5
82
Diazanon
49
37.5
8.4
130
Gamma BHC (Lindane)
81
75
5.0
108
Aldrin
36
37.5
13.7
96
Metribuzin
67
75
11.7
89
Dursban (Chlorpyrifos)
175
225
6.3
78
Malathion
730
600
13.3
122
Sevin (Carbaryl)
72
75
9.9
96
Parathion
75
75
9.4
100
trans
-Chlordane
43
37.5
16.0
115
Terbufos
76
75
9.8
101
cis
-Chlordane
39
37.5
9.9
105
Bifenthrin
65
600
11.6
109
cis
-Permethrin
1236
1200
15.1
103
trans
-Permethrin
1239
1200
11.6
103
Average
10.8
104
Table 6: Results of method validation study, showing good precision and high recoveries
