Fig. 10. ELISA calibration function for DCF with increasing content of NOM ((A) NOM isolated from Groβe Fuchskuhle; ■ 0 mg L⁻¹ NOM, 1.25 mg L⁻¹ NOM, 2.5 mg L⁻¹ NOM; (B) NOM isolated from Schwarzer see; ■ 5 mg L⁻¹ NOM, 10 mg L⁻¹ NOM, 50 mg L⁻¹ NOM).