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1056
C
HANG
ET AL
.:
J
OURNAL OF
AOAC I
NTERNATIONAL
V
OL
.
99, N
O
.
4, 2016
ratios of predicted and measured results also have the relatively
higher deviation ratios of their initial values (10.1–13.7 ).
However, the deviation ratios of initial values of the other 14
pesticides were <10 , with a range of 0.1–9.1 . With the
decrease of the deviation ratio of initial values, the deviation
ratio of predicted and measured results gets smaller. It can
be concluded that the closer their initial values, the better the
results obtained.
Table 4. Deviation ratios of predicted and determined results of
c
concn at different time intervals
a
No.
Pesticide
Time interval, days
5
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
1
7ULÀXUDOLQ
13.3 14.1 11.6 í 21.0 15.4 14.1 18.0 11.6 16.0 í 17.8 10.0 19.2 11.4 21.5 20.3 20.2
2
7HÀXWKULQ
15.2 17.4 16.0 14.1 15.1 25.5 16.1 19.7 12.2 23.5 20.3 20.7 17.8 20.6 21.2 26.0 25.3 21.4
3
Pyrimethanil
5.4 11.2 9.7 3.6 3.5 7.7 6.2 9.0 0.3 11.1 6.6 8.8 6.3 11.7 10.4 20.0 13.7 14.1
4
Propyzamide 6.9 11.4 9.9 3.6 4.9 7.6 9.2 7.1 0.0 11.4 3.4 8.6 8.9 8.6 7.8 15.4 12.4 10.4
5
Pirimicarb
7.4 11.9 10.7 5.7 9.5 13.7 11.6 11.2 8.1 15.7 8.5 12.6 11.5 13.2 13.4 20.6 17.1 14.5
6
Dimethenamid 9.4 13.0 11.4 6.6 15.3 18.0 17.6 16.3 7.9 17.5 12.3 17.2 13.7 19.9 17.0 24.0 21.4 18.9
7
Fenchlorphos
6.5 12.8 11.3 í 9.2 12.8 4.1 12.0 8.0 13.9 3.8 15.6 16.0 17.7 12.7 24.4 19.3 18.5
8
Tolclofos-methyl
9.5 13.7 11.8 5.8 11.9 9.4 8.2 13.6 9.2 16.1 9.7 17.0 15.8 17.4 14.5 23.1 19.9 17.6
9
Pirimiphos-methyl
9.2 13.9 13.0 6.1 11.2 10.1 9.2 13.1 í 13.1 11.3 13.5 12.9 16.0 14.9 21.8 20.6 17.6
10
ƍ ''(
0.8 5.6 7.0 4.5 4.1 í 5.3 2.6 0.2 7.3 5.7 4.1 0.4 4.3 6.7 10.8 11.3 4.6
11 Bromophos-ethyl
3.8 10.5 10.8 2.4 8.0 1.2 5.6 6.0 5.7 10.5 3.4 11.6 9.2 13.2 10.7 17.8 16.8 12.4
12
ƍ ''(
0.4 5.2 6.4 3.9 3.5 í 4.5 1.8 í 6.4 5.4 4.5 0.4 5.2 7.9 10.8 11.4 5.6
13
Procymidone í
4.0 5.7 4.4 3.7 í 6.3 í í 4.8 2.0 3.9 í 1.9 6.2 9.8 8.6 2.9
14
Picoxystrobin í
2.7 5.5 4.0 2.5 í 8.4 í í 3.2 0.4 3.2 í 2.1 6.2 8.9 7.1 0.1
15
Quinoxyfen
2.3 11.2 10.1 4.1 1.2 í
8.1 í í 0.7 í 2.1 í 4.5 5.6 14.7 6.1 3.2
16
Chlorfenapyr
í
4.6 6.2 2.0 2.9 í 6.7 í í 3.1 í 3.7 í 2.3 4.0 8.4 6.0 í
17
Benalaxyl
í
4.2 4.6 4.0 3.0 í
6.8 í í 4.6 1.7 4.3 í 3.0 7.4 8.7 6.5 í
18
Bifenthrin
í
4.3 5.4 7.8 3.1 í 10.0 í í 3.5 4.2 4.7 í 3.7 8.9 11.1 7.8 í
19
'LÀXIHQLFDQ í
9.1 7.3 2.0 1.8 í
9.5 í í 0.5 í 2.3 í 4.7 6.6 13.5 8.2 2.5
20
Bromopropylate í
9.1 7.3 í 6.0 í 10.5 í í 2.1 í 4.5 í 10.0 6.9 10.2 7.4 0.3
a
9DOXHV DUH GHYLDWLRQ UDWLRV FDOFXODWHG DV GHWHUPLQHG UHVXOW í SUHGLFWHG YDOXH î · GHWHUPLQHG UHVXOW
Table 5. Initial values of
c
and
d
concns and the range of deviation ratios of predicted and determined results
No.
Pesticide
Initial value
Range of deviation
UDWLR
b
Revised range of deviation
UDWLR
c
c
&RQFQ ȝJ NJ
d
&RQFQ ȝJ NJ 'HYLDWLRQ UDWLR
a
1
7ULÀXUDOLQ
214.4
248.6
13.7
í WR
í WR
2
7HÀXWKULQ
106.1
122.6
13.5
12.2–26.0
12.2–25.5
3
Pyrimethanil
116.9
124.7
6.3
0.3–20.0
0.3–14.1
4
Propyzamide
119.6
126.6
5.5
0–15.4
0–12.4
5
Pirimicarb
114.7
126.2
9.1
5.7–20.6
5.7–17.1
6
Dimethenamid
46.2
51.9
11.1
6.6–24.0
6.6–21.4
7
Fenchlorphos
240.3
267.4
10.1
í WR
í WR
8
Tolclofos-methyl
116.7
130.5
10.5
5.8–23.1
5.8–19.9
9
Pirimiphos-methyl
113.0
126.3
10.6
í WR
í WR
10
ƍ ''(
451.7
466.9
3.3
í WR
í WR
11
Bromophos-ethyl
116.0
124.2
6.6
1.2–17.8
1.2–16.8
12
ƍ ''(
451.7
466.9
3.3
í WR
í WR
13
Procymidone
117.9
120.3
2.0
í WR
í WR
14
Picoxystrobin
234.0
236.0
0.9
í WR
í WR
15
Quinoxyfen
115.9
116.4
0.4
í WR
í WR
16
Chlorfenapyr
965.0
966.0
0.1
í WR
í WR
17
Benalaxyl
116.8
118.9
1.7
í WR
í WR
18
Bifenthrin
112.9
114.8
1.7
í WR
í WR
19
'LÀXIHQLFDQ
118.6
119.4
0.7
í WR
í WR
20
Bromopropylate
237.4
240.0
1.1
í WR
í WR
a
'HYLDWLRQ UDWLRV DUH FDOFXODWHG DV
d
&RQFQ í
c
FRQFQ î ·
d
concn.
b
%HWZHHQ SUHGLFWHG DQG GHWHUPLQHG UHVXOWV
c
%HWZHHQ SUHGLFWHG DQG GHWHUPLQHG UHVXOWV ZLWKRXW WKH GD\ LQWHUYDO UHVXOWV