Table 9.

Calcium mass observed according to gravimetry, calculation of read mass according to AAS and final percentage composition of read Ca % (w/w).

	Ca, mg obs	Total pellet mass mg	% Ca mg/mg (w/w) obs	Abs	C, ppm	Ca, mg read	% Ca (w/w) read	Proportionality factor obs/read
1	0	62.9	0	0.0011	−0.20	0.04	0.1	0
2	1.9	68.8	2.8	0.0619	8.50	2.15	3.1	0.89
3	4.9	77.7	6.3	0.1517	21.3	5.87	7.6	0.84
4	7.8	83.4	9.4	0.2381	33.6	9.91	11.9	0.79
5	9.4	87.6	10.8	0.2051	28.9	9.24	10.5	1.03
6	12.6	93.9	13.4	0.3668	52.0	19.00	20.2	0.66
7	14.7	99.9	14.8	0.3785	53.6	18.52	18.5	0.80
	Gravimetry	Gravimetry	Gravimetry	AAS	AAS	AAS	AAS	AAS
V = 250 ml 1 ppm = 1 mg/L								0.7 ± 0.1