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egrup dem nettav i COV va sylanA kinket part dna - Chalmers ...

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Bilaga 13, standardkurvor 21 ng l -1 – 1000 ng l -1 tio punkter<br />

Punkterna representerar ett uppmätt medelvärde vid <strong>va</strong>rje koncentration. De s<strong>va</strong>rta ”-”<br />

tecknen visar standardavvikelsen. Standardkurvorna gäller vid extraktion vid<br />

Vg<br />

rumstemperatur och då = 30 .<br />

V<br />

Uppmätt halt bensen (ng prov -1 )<br />

Uppmätt halt toluen (ng prov -1 )<br />

Uppmätt halt etylbensen<br />

(ng prov-1 )<br />

100,0<br />

80,0<br />

60,0<br />

40,0<br />

20,0<br />

100,0<br />

90,0<br />

80,0<br />

70,0<br />

60,0<br />

50,0<br />

40,0<br />

30,0<br />

20,0<br />

10,0<br />

0,0<br />

l<br />

89<br />

y = 0,083x<br />

R 2 = 0,9986<br />

0,0<br />

0 200 400 600 800 1000 1200<br />

100,0<br />

90,0<br />

80,0<br />

70,0<br />

60,0<br />

50,0<br />

40,0<br />

30,0<br />

20,0<br />

10,0<br />

0,0<br />

Provkoncentration bensen (ng l -1 )<br />

y = 0,0863x<br />

R 2 = 0,9946<br />

0 200 400 600 800 1000 1200<br />

Provkoncentration toluen (ng l -1 )<br />

y = 0,0894x<br />

R 2 = 0,9924<br />

0 200 400 600 800 1000 1200<br />

Provkoncentration etylbensen (ng l -1 )

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