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mAbs a 357.9 nm (ETAAS)<br />

100<br />

80<br />

60<br />

40<br />

20<br />

acqua: intercetta =13.1±1.5 mAbs, pendenza = 16.8±0.5, r = 0.998<br />

CAE: intercetta =13.3±1.4 mAbs, pendenza = 14.5±0.5, r = 0.997<br />

0<br />

0 1 2 3 4 5<br />

Cr(VI) (μg/L)<br />

Figura 10: Retta di calibrazione di Cr(VI) in nell’intervallo 0-5 μg/L dopo estrazione<br />

con TBA e complessazione con DPC in acqua, and in un pool di CAE. L’intercetta<br />

rappresenta il valore del bianco in assenza di standard Cr(VI).<br />

109

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