Table 1: Retention time, target ion pair, LOQ, and linear range of the six PAEs under consideration.

Compounds CAS Retention time (min) Target ion pairs (m/z)
and excitation voltage (V)		 LOQ
(µg/L)		 Linear ranges (µg/L) Correlation
coefficients
DIBP 84-69-5 8.143 149.1 > 121.2 (1.0)*
223.1 > 149.1 (1.5)		 2.5 2.5-1250 0.9998
DBP 84-74-2 8.578 149.1 > 121.2 (1.0)*
223.1 > 149.1 (2.1)		 2.5 2.5-1250 0.9998
DNPP 131-18-0 9.342 149.1 > 121.2 (1.0)*
237.1 > 149.1 (1.3)		 2.5 2.5-1250 0.9998
BBP 85-68-7 10.069 149.1 > 121.2 (0.8)*
206.0 > 149.1 (1.0)		 5 5-1250 0.9994
DEHP 117-81-7 10.692 149.1 > 121.2 (0.8)*
   167.0 > 149.1 (1.0)		 5 5-1250 0.9996
DNOP 117-84-0 11.537 149.1 > 121.2 (0.8)*
279.1 > 149.1 (1.2)		 12.5 12.5-1250 0.9998

* Precursor > quantifier (excitation voltage)