Relationships of Zn Between Centella Asiatica and Geochemical Fractions of the Habitat Topsoils: Implications of Biomonitoring of Zn

Table 3: The values of geochemical indices based on the Zn levels in the habitat topsoils of Centella asiatica. Fe concentrations are presented in %.

	Zn soil	Fe (%) soil	EF	Igeo	Cf	Er
PPauh	224	2.16	6.14	1.52	4.30	4.30
Karangan	49.9	1.37	0.64	-2.40	0.29	0.29
Kluang	42.6	1.22	0.62	-2.62	0.24	0.24
Butterworth	308	2.79	6.55	1.98	5.92	5.92
UPM	88.5	2.59	2.03	0.18	1.70	1.70
Kapar	33.1	2.34	0.84	-1.24	0.64	0.64
Seremban	210	2.74	4.55	1.43	4.03	4.03
KSR	133	2.18	3.61	0.77	2.55	2.55
Pontian	212	2.47	5.10	1.44	4.07	4.07

Note: EF= enrichment factor; Igeo= geoaccumulation index; Cf= contamination factor; Er= ecological risk. Data of Zn and Fe in the soils were cited from Ong et al. [⁸].