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Table 4.

Fe and Na quantification in the sample 6–12.

Samples PAA (mg/L) Na (mg/L) Ca (mg/L) Na/PAA % Ca/PAA %
KPAA stock solution 1 9960 665 ND 6.68
KPAA stock solution 2 9460 3911 ND 41.3 (39.2)
KPAA stock solution 2 with added MgCl2 9460 3732 976 39.45 (39.2) 10.32 (16.47)
Aliquots 6–12 1285 3022 102.1 235.2 (290) 7.94

In brackets the expected values –ND = Not Determined

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