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Table 2 Limits of detection and summary statistics for pesticide dust concentrations (ng/g) in samples collected in 2006 from low-income farmworker and urban homes.a,b

From: Pesticides in house dust from urban and farmworker households in California: an observational measurement study

 

Salinas farmworker homes

(n = 29 samples collected from 15 homes)

Oakland urban homes

(n = 25 samples collected from 13 homes)

 

LOD (ng/g)

DF

min

p25

p50

p75

p95

max

DF

min

p25

p50

p75

p95

max

Organophosphates

               

Diazinon

4

79

--

8.21

14.4

18

35.8

56.4

52

--

--

6.98

18.1

133

139

Chlorpyrifos

10

55

--

--

21.9

28

135

200

36

--

--

--

34.9

43.7

56.4

Malathion

10

7

--

--

--

--

52.2

70.8

12

--

--

--

--

877

1160

Tetrachlorvinphos

50

10

--

--

--

--

252

271

4

--

--

--

--

--

15.8

Diazinon-oxon

4

ND

--

--

--

--

--

--

4

--

--

--

--

--

4.73

Methidathion

10

ND

--

--

--

--

--

--

ND

--

--

--

--

--

--

Methyl Parathion

10

ND

--

--

--

--

--

--

ND

--

--

--

--

--

--

Phorate

10

ND

--

--

--

--

--

--

ND

--

--

--

--

--

--

Pyrethroids

               

cis-permethrin

4

100

45.9

84.9

568

908

5930c

6300c

100

11.6

84.4

291

946

21600

26700

trans-permethrin

4

100

88.4

144

952

1380

9170c

9690c

100

18.4

166

504

1620

36400

46800

Allethrind

10

83

--

18.4

57.1

129

652c

694

80

--

20.376

50.5

158

276

289

Cypermethrine

20

55

--

--

230

918

4540

13500

64

--

--

587

1050

5990

13100

Bifenthrin

10

14

--

--

--

--

23.8

23.9

44

--

--

--

45

2050

2120

Sumithrin

10

24

--

--

--

--

591

807

8

--

--

--

--

104

116

Deltamethrin

250

17

--

--

--

--

3780

5590

12

--

--

--

--

13000

16300

Imiprothrin

50

7

--

--

--

--

253

2140

4

--

--

--

--

--

160

Prallethrin

2

ND

--

--

--

--

--

--

4

--

--

--

--

--

33.6

Esfenvalerate

50

3

--

--

--

--

--

66.5

ND

--

--

--

--

--

--

Other

               

Piperonyl butoxidef

2

86

--

30.9

92.3

283

9060

9350

96

--

51.6

353

751

40300

46600

Chlorthal-dimethylg

2

97

--

13.3

16.3

23.5

34.1

34.8

ND

--

--

--

--

--

--

Iprodioneh

100

ND

--

--

--

--

--

--

ND

--

--

--

--

--

--

  1. a. Two samples were obtained from each home in both locations except for one home in each location due to inadequate sample volume. b. Samples were collected from carpets or area rugs with the exception of three samples from two farmworker homes which were collected from furniture due to the absence of a carpet. c. Denotes that the reported concentration was observed in a furniture sample. d. Reported as the sum of two isomers (cis/trans) isomers. e. Reported as the sum of four isomers. f. Insecticide synergist. g. Phthalate herbicide h. Dicarboximide fungicide. Abbreviations and notation: LOD = limit of detection; DF = detection frequency (based on the number of samples obtained); ND or '--' indicates that analyte was not detected or detected <LOD so a summary statistic is not reported.