Table 2 Maximum exposures and benchmark concentrations for contaminants in fish.

From: Spatial distribution, source identification, and risk assessment of organochlorines in wild tilapia from Guangxi, South China

Compounds

Oral RfDa (μg/kg/day)

Cancer slope factora (per μg/kg/day)

Cancer benchmark concentration (ng/kg/day)

50th MECb (ng/kg, ww)

95th MECb (ng/kg, ww)

Endosulfan

6

  

2.10E-03

7.91E-03

γ-HCH

0.3

1,100

0.87

1.71E-01

2.36E + 00

DDTs

0.5

340

2.81

1.81E-02

8.28E-02

Chlordane

0.06

350

2.73

9.60E-03

2.46E-02

Dieldrin

0.05

16,000

0.06

2.82E-02

6.73E-02

HCB

0.8

1,600

0.60

9.78E-02

1.33E-01

PCBs

0.02

2000

0.48

1.12E-01

7.58E + 00

  1. aOral RfDs and cancer slope factors were obtained from USEPA’s Integrated Risk Information System (IRIS).
  2. b50th and 90th percentile MECs (measured concentrations) of OCPs and PCBs were used in the assessment of the risk posed to human health by the consumption of contaminated fish from the main river in the southern Guangxi, China.
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