Spiked real samples

Copper(II) concentration

of spiked sample [mg/L]

determined by ISE [mg/L]

determined by AAS [mg/L]

River water (Zschopau, Germany)

6.4

7.7

5.8

Sea water (Baltic sea, Kolobrzeg, Poland)

63.5

66.1

57.1

River water (Rhein, Germany)

63.5

62.7

53.1

Sea water (Baltic sea, Glowe, Germany)

63.5

57.5

53.9