Table 5 Effects of influence substances on the determination of AO and MB.

From: Dispersive solid phase microextraction based on magnesium oxide nanoparticles for preconcentration of auramine O and methylene blue from water samples

Foreign species

Spiked concentration

%ER

(μg mL−1)

AO

MB

Li+, Na+, K+ Mg2+, Ca2+, F−, C−, Br−

100

97.41

98.53

Co2+, NO3−, Fe2+, Fe3+, Pb2+

70

99.56

98.85

Al3+, Cd2+, Ni2+

50

98.37

97.20

Ag+, Cu2+, Sn2+

10

99.12

98.94

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