Table 2 Results of blank and spiked recoveries of copper in real environmental samples.

From: Preparation of a magnetic polystyrene nanocomposite for dispersive solid-phase extraction of copper ions in environmental samples

Sample

Cadded (ng mL−1)

Cfound+SD (ng mL−1)

Recovery%

Soil

0

14.1

—

25

40.3

104 ±0 0.7

River water

0

7

—

25

31.8

99.2 ±0 1

Oyster

0

5.2

—

25

20.1

101.2 ±0 0.1

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