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

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Bilaga 11, standardkurvor 21 ng l -1 - 103 ng l -1 fem 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 toluen (ng prov -1 )<br />

Uppmätt halt bensen<br />

(ng prov -1 )<br />

9,0<br />

8,0<br />

7,0<br />

6,0<br />

5,0<br />

4,0<br />

3,0<br />

2,0<br />

1,0<br />

0,0<br />

Uppmätt halt etylbensen<br />

(ng prov -1 )<br />

10,0<br />

8,0<br />

6,0<br />

4,0<br />

2,0<br />

0,0<br />

l<br />

85<br />

y = 0,0766x<br />

R 2 = 0,9979<br />

0 20 40 60 80 100 120<br />

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

y = 0,0763x<br />

R 2 = 0,8916<br />

0 20 40 60 80 100 120<br />

9,0<br />

8,0<br />

7,0<br />

6,0<br />

5,0<br />

4,0<br />

3,0<br />

2,0<br />

1,0<br />

0,0<br />

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

y = 0,0723x<br />

R 2 = 0,9785<br />

0 20 40 60 80 100 120<br />

Provkoncentration etylbensen (ng l -1 )

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