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Appendix D
5/20/2009
14
11.6 Calculations for the Turner Designs TD700
11.6.1 Filtered water samples:
11.6.1.1
Total chla:
(R
B
* F
S
* 10 * dil.)/vol. filtered (ml) = conc.
µ
g/L
11.6.1.2
Active chla:
(R
B
- R
A
) * F
S
* (r/(r-1)) * 10 * dil.)/vol. filtered (ml) =
µ
g/L
11.6.1.3
Phaeophytin:
((R
A
* r) - R
B
) * F
S
* (r/(r-1)) * 10 * dil.)/vol. filtered (ml)
=
µ
g/L
Where:
R
B
= Reading before adding acid
R
A
= Reading after adding acid
10 = extract volume in ml
r = acid ratio: R
B
/R
A
of calibrating std
F
S
= calibrating std conc. / reading of std
11.6.2 Sediments:
11.6.2.1
Total chlα:
11.6.2.2
Active or corrected chlα:
11.6.2.3
Phaeopigments: