Table 1 Description and distribution of variables and models for dietary exposure assessment of OP residues in tea infusion

OPs

Conc _Qp

Concentration in methamidophos equivalents of OPs in tea infusion (detected value)

Lognorm (0.052, 4.636)^a

Monitoring data

Lognorm (0.003, 0.041)^b

Lognorm (0.003, 0.151)^c

Conc _Qn

Concentration in methamidophos equivalents of OPs in tea infusion (undetected value)

Uniform (0, 0.105)^a

Monitoring data

Uniform (0, 0.044)^b

Uniform (0, 0.105)^c

Conc ^* _Qp

Concentrationin in methamidophos equivalents of OPs in tea infusion (detected value)

Lognorm (0.038, 2.987)^a

Monitoring data

Lognorm (0.002, 0.019)^b

Lognorm (0.001, 0.019)^c

Conc ^* _Qn

Concentration in methamidophos equivalents of OPs in tea infusion (undetected value)

Uniform (0, 0.447)^a

Monitoring data

Uniform (0, 0.235)^b

Uniform (0, 0.447)^c

Pp

Rate of sample with detectable

10.11%^a

Calculated

13.53%^b

6.20%^c

Pn

Rate of sample with undetectable

89.89%^a

Calculated

86.47%^b

93.80%^c

Conc _QC

Concentration in methamidophos equivalents of OPs in tea infusion

Discrete (ConcQp: ConcQn, Pp: Pn)

Calculated

TR

Transfer rate

87.4%

Based on the open scientific literatures to calculate

22.1%

2.8%

Cons

The consumption of tea

Invgauss (3.772, 0.721)^a

China National Nutrient and Health Survey

Invgauss (4.474, 1.718)^b

Invgauss (11.532, 10.870)^c

BW

Body weight for tea consumers

Normal (55.1, 15.5)

China National Nutrient and Health Survey