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Table 6 Residues and DRI values for UK-Grown and imported, conventional potatoes tested by the UK-FSA in 2013 [No OC’s Banned by US included]

From: The dietary risk index system: a tool to track pesticide dietary risks

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Total Samples

Number of Positives

Percent Positive

Mean of Positives (ppm)

cRfC (ppm)

Serving Size (g)

Positive Samples DRI-M

FS-DRI

Percent FS-DRI

UK-Grown

 Chlorpropham (potato def.)

102

26

25.5%

1.55

10.7

75

0.146

0.0371

45.3%

 Maleic Hydrazide

102

20

19.6%

9.58

53.3

75

0.180

0.0352

43.0%

 Fosthiazate

102

1

1%

0.020

0.0360

75

0.561

0.00550

6.72%

 Thiabendazole

102

1

1%

2.00

7.04

75

0.284

0.00279

3.40%

 Pencycuron

102

6

5.9%

0.025

2.13

75

0.0117

0.000689

0.842%

 Imazalil

102

1

1%

0.300

5.33

75

0.0563

0.000551

0.065%

 Propamocarb

102

6

5.9%

0.0233

25.6

75

0.000911

0.0000536

0.673%

 Azoxystrobin

102

1

1%

0.0200

38.4

75

0.000521

0.00000511

0.006%

Average Number of Samples:

102

        

Total Positives and Aggregate DRI:

 

62

    

1.240

0.0819

 

Average Residues Detected per Sample:

 

0.608

       

Number of Analytes Detected:

8

        

Imported to UK

 Chlorpropham (potato def.)

13

9

69.2%

0.933

10.7

75

0.0875

0.0606

66.0%

 Maleic Hydrazide

13

2

15%

8.800

53.3

75

0.165

0.0254

27.30%

 Thiabendazole

13

1

7.7%

0.600

7.04

75

0.0852

0.00656

7.04%

 Imazalil

13

1

7.7%

0.040

5.33

75

0.00750

0.000577

0.62%

 Propamocarb

13

1

7.7%

0.020

25.6

75

0.000781

0.0000601

0.065%

Average Number of Samples:

13

        

Total Positives and Aggregate DRI:

 

14

    

0.346

0.0932

 

Average Residues Detected per Sample:

 

1.08

       

Number of Analytes Detected:

5