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Table 2 The residue concentrations (μg kg−1) of PFOA and PFOS in upland soil and crops

From: The dietary risk assessment of perfluorooctanoic acid (PFOA) and perfluorosulfonic acid (PFOS) in the root crops from the survey of the residue in agricultural soil and the crops

Crop

Average residue (detection ranges, μg kg−1)

Soil

Crop

PFOA

PFOS

PFOA

PFOS

Radish

0.541 (< 0.020–5.579)

0.111 (< 0.020–0.698)

0.067 (< 0.020–0.356)

 < 0.020

Onion

0.173 (0.032–0.586)

0.067 (< 0.020–0.342)

0.193 (< 0.020–0.698)

 < 0.020

Carrot

0.124 (< 0.020–0.308)

0.061 (< 0.020–0.565)

0.088 (< 0.020–0.768)

 < 0.020 (< 0.020–0.025)

Potato

0.156 (0.073–0.342)

0.065 (< 0.020–0.303)

0.150 (0.035–0.375)

 < 0.020 (< 0.020–0.021)

Garlic

0.098 (< 0.020–0.342)

0.088 (< 0.020–0.359)

0.161 (0.070–0.471)

 < 0.020 (< 0.020–0.247)

Sweet potato

0.054 (< 0.020–0.141)

0.024 (< 0.020–0.103)

0.111 (< 0.020–0.300)

 < 0.020 (< 0.020–0.027)