Intra-individual variations of organophosphate pesticide metabolite concentrations in repeatedly collected urine samples from pregnant women in Japan

Table 1 Limit of detection, detection rates, geometric means, and percentile values of urinary dialkylphosphate concentrations among pregnant women in Japan

Compounds	LOD	> LOD (%)	GM	Min.	Percentile					Max.	Between-variance	Within-variance
Compounds	LOD	> LOD (%)	GM	Min.	5th	25th	50th	75th	95th	Max.	Between-variance	Within-variance
DMP	0.06	87	1.5	< LOD	0.09	0.60	1.8	4.7	18	81	14	1.4
DMTP	0.10	98	5.3	< LOD	0.41	2.0	5.6	17	54	332	10	1.5
DMDTP	0.63	66	0.94	< LOD	< LOD	< LOD	0.73	1.7	4.7	12	2.6	0.44
DEP	0.47	99	3.6	< LOD	0.69	1.9	3.4	6.5	21	153	4.8	0.56
DETP	0.02	100	0.73	0.11	0.16	0.29	0.57	1.6	7.17	102	7.4	0.79
DEDTP	0.02	67	0.05	< LOD	< LOD	< LOD	0.05	0.12	0.41	2.4	8.0	0.79
ΣDMAPs	–	–	70	4.0	7.9	29	64	177	535	2621	7.2	0.89
ΣDEAPs	–	–	30	2.9	6.3	15	28	53	178	1005	5.1	0.53
ΣDAP	–	–	110	8.7	18	51	100	249	648	2742	5.9	0.66

DMP dimethylphosphate (μg/L); DMTP dimethylthiophosphate (μg/L); DMDTP dimethyldithiophosphate (μg/L); DEP diethylphosphate (μg/L); DETP diethylthiophosphate (μg/L); DEDTP diethyldithiophosphate (μg/L); ΣDMAPs sum of DMP, DMTP, and DMDTP (nmol/L); ΣDEAPs sum of DEP, DETP, and DEDTP (nmol/L); ΣDAP sum of six DAPs (nmol/L); LOD limit of detection; > LOD detection rate (%); GM geometric mean; Min. minimum value; Max. maximum value

ISSN: 1347-4715