A revised method for determination of dialkylphosphate levels in human urine by solid-phase extraction and liquid chromatography with tandem mass spectrometry: application to human urine samples from Japanese children

Table 2 Compound-specific mass spectrometer settings

Compounds	Fragementor (V)	Precursor ion (m/z)	Product ion (m/z)	Collision energy (eV)	Polarity	Retention time (min)
DMP-d₆	90	133	115	18	Positive	6.48
DMP	90	127	109 (Q) 95 (C)	20 20	Positive	6.48
DMTP-d₆	90	147	129	14	Negative	6.54
DMTP	90	141	126 (Q)^a 96 (C)	13 21	Negative	6.54
DEP-d₁₀	80	165	101	16	Positive	6.53
DEP	80	155	127 (Q) 99 (C)	10 10	Positive	6.53
DETP-d₁₀	100	179	95	20	Negative	6.89
DETP	90	169	95 (Q) 141 (C)	17 9	Negative	6.89

ISSN: 1347-4715