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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.