Table 2.

Metal ion content of the polymers.

Ion	Concentration (mg/kg)
	CSG	KYG	ACG
Na+	1,500 ± 0.20	300 ± 0.11	900 ± 0.32
K+	550 ± 0.25	1,600 ± 0.50	140 ± 0.17
Mg2+	1,375 ± 0.19	2.85 ± 0.15	441 ± 0.15
Ca2+	2,397 ± 0.26	18 ± 0.22	705 ± 0.15
Cu2+	3.1 ± 0.04	9.0 ± 0.09	0.00 ± 0.00
Pb2+	0.00 ± 0.00	0.00 ± 0.00	0.00 ± 0.00

CSG: cashew gum, KYG: khaya gum, and ACG: acacia gum.