Page 39 - Volume 2,Issue 2, July 2009
Basic HTML Version
© Benaki Phytopathological Institute
LC-MS/MS multiresidue method in peaches
85
Table 3 (continued)
Area = f(C)
Analyte
R
r
2
b
S
b
a
S
a
S
u
spiroxamine
0.999 0.997 3.30E+09 7.35E+07 1.91E+07 2.46E+07 0.0158
tebuconazole
0.994 0.988 6.38E+08 2.86E+07 1.65E+07 9.57E+06 0.0320
tebufenozid
0.986 0.973 8.30E+08 5.68E+07 3.97E+07 1.90E+07 0.0487
tebufenpyrad
0.996 0.991 5.70E+08 2.16E+07 6.55E+06 7.23E+06 0.0270
tetraconazole
0.997 0.993 2.69E+08 9.07E+06 5.85E+06 3.03E+06 0.0240
thiabendazole
0.994 0.989 1.83E+09 7.89E+07 4.85E+07 2.64E+07 0.0308
thiacloprid
0.996 0.992 1.97E+09 7.08E+07 5.52E+07 2.37E+07 0.0255
thiamethoxam
0.990 0.980 3.76E+08 2.17E+07 1.21E+07 7.24E+06 0.0410
thiodicarb
0.988 0.975 3.60E+08 2.34E+07 -8.52E+06 7.82E+06 0.0462
triadimefon
0.993 0.986 3.41E+08 1.64E+07 1.44E+07 5.49E+06 0.0343
triadimenol
0.991 0.982 7.80E+08 4.33E+07 3.93E+07 1.45E+07 0.0395
trifloxystrobin
0.996 0.993 3.46E+09 1.22E+08 2.16E+07 4.07E+07 0.0251
vamidothion
0.995 0.989 4.91E+08 2.09E+07 5.17E+06 6.99E+06 0.0303
1
0.025–0.75 μg/ml concentration levels
r
2
: Correlation coefficient
b: Slope of the regression line
S
b
: Mean standard deviation of the slope of the regression line
a: Mean of the population that corresponds to x=0
S
a
: Mean standard deviation of the mean of the population that corresponds to x=0
S
u
: The uncertainty in the predicted value C (mg/kg) due to the variability in the Area
Table 4.
Recovery data and relative standard deviation (RSD) values (n = 6) obtained for the
56 pesticides from the spiking experiments in the peach matrix.
Compound
1
st
level
(0.01 mg/kg)
2
nd
level
(0.05 mg/kg)
3
th
level
(0.5 mg/kg)
Mean
recovery
(%)
RSD
Mean
recovery
(%)
RSD
Mean
recovery
(%)
RSD
acetamiprid
113.47
18.31
73.7
20.6
87.2
4.3
alachlor
-
-
91.2
15.3
96.4
5.3
aldicarb
-
-
82.6
9.6
96.18
2.5
aldicarb sulfone
-
-
77.2
6.2
82.6
3.9
aldicarb sulfoxide
-
-
55.5
11.8
48.6
5
boscalid
81.33
16.33
119.8
13.4
91.7
6.3
bromuconazole
-
-
89.7
11.8
93.8
6.8
buprofezin
100.43
6.95
98.6
8.6
93.8
3.9
carbaryl
82.68
19.63
106.2
7.7
100.9
2.3
carbendazim
121.48
17.38
118.0
6.2
90.5
3.5
carbofuran
76.81
14.56
80.4
19.6
110.9
2.3
carbofuran 3-hydroxy
-
-
92.8
6.7
99.4
3.6
clofentezine
105.8
6.79
119.7
22.6
97.5
25.7
cymoxanil
95.35
4.89
98.8
10.7
101.3
4.8
demeton-S-methyl
-
-
66.65
11
88.72
5.5
demeton-S-methyl sulfoxide
92.78
15.83
82.2
17.9
71.2
2.1
dimethomorph
91.74
16.38
110.1
4.9
102.8
3.7
