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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Environ Int. 2017 Jun 8;106:248–256. doi: 10.1016/j.envint.2017.05.015

Table 2.

Distribution of OP insecticide concentrations in umbilical cord blood plasma samples (ng/mL) at delivery, Zhejiang Province, China (n=237)

Organophosphate LOD N >LOD (%) 50th 75th 90th 95th 99th Max
Acephate 0.10 7 (3.0) ND ND ND ND 0.57 0.68
Chlorpyrifos 0.40 87 (36.7) ND 0.56 1.92 2.71 4.65 7.33
Chlorpyrifos-methyl 0.01 18 (7.6) ND ND ND 0.07 0.47 1.14
Fensulfothion 0.03 1 (0.4) ND ND ND ND ND 10.35
Fosthiazate 0.07 1 (0.4) ND ND ND ND ND 7.82
Isofenphos-methyl 0.13 2 (0.8) ND ND ND ND ND 14.70
Methamidophos 1.52 153 (64.6) 6.11 28.10 59.60 113.71 231.96 496.86
Methidathion 0.07 1 (0.4) ND ND ND ND ND 9.23
Mevinphos 0.12 15 (6.3) ND ND ND 0.14 0.25 0.26
Naled 0.42 236 (99.6) 1.51 4.33 9.17 12.22 22.13 29.23
Omethoate 1.35 19 (8.0) ND ND ND 1.83 4.37 9.34
Phorate 1.79 40 (16.9) ND ND 3.10 5.14 7.02 12.82
Terbufos 0.33 3 (1.3) ND ND ND ND 0.39 3.32
Trichlorfon 0.35 121 (51.0) 0.46 1.69 3.65 5.52 10.56 11.30
* Carbophenothion sulfone 0.02 16 (6.8) ND ND ND 0.49 1.64 18.83
* DEDTP 0.06 2 (0.8) ND ND ND ND ND 0.69
* DMTP 1.35 1 (0.4) ND ND ND ND ND 9.24
* TCPY 2.32 1 (0.4) ND ND ND ND ND 13.52

Undetected:

Diazinon, Dicrotophos, Dimethoate, Formothion, Phosphamidon, Dimethylvinphos, Parathion-methyl, Malathion, Dichlorphos, Monocrotophos, *Phorate sulfone, *DMDTP

*

Denotes a metabolite

Abbreviations: ND, non-detect; DEDTP, diethyldithiophosphate; DMTP, dimethylthiophosphate, TCPY, 3,5,6-trichloro-2-pyridinol; DMDTP, dimethyldithiophosphate