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Table 1 Details of the sampling sites for Cyprinidae and water

From: Heavy metal baselines in cyprinidae of the Han River: a decade-long study on bioaccumulation trends and species-specific sensitivities

Purpose

Period

Sites

Target

No. of samples

To determine HM baseline concentrations

March and September 2011–2020 (twice a year)

S1–S3

Common carp

60

Crucian carp

60

Barbel steed

60

To identify the correlation between HM level and fish size

March and September 2019–2021 (twice a year)

S1–S3

Common carp

18

Crucian carp

18

Barbel steed

18

To identify whether different habitats affect bioaccumulation

June–August 2021 (eight times)

W1–W5

Water

40