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Enzymes in Tropical Soils 129

-1
rocks around the world to be ranging from 0.2 to 340 mg kg or from 1 to 641 mg
-1
kg P.
Table 9.3. The heavy metal intake by Jakarta Bay as predicted
by DPMA (1983).

Daily Intake
No. Heavy Metals
(kg day )
-1
1 Cu 191
2 Cr 325
3 Hg 362
4 Ni 154
5 Pb 757
6 Zn 43,000

INDUSTRY FERTILIZERS PESTICIDES ROCKS

(ANTROPOGE (ALAMI) (ALAMI) (ALAMI)
NIK)
HEAVY

METALS

SOILS RIVERS SEAS

SOIL WATER
DRINKING IRRIGATION PONDS
WATER

PLANKTON
AGRICULTURE
GROUND PRODUCT
WATER FISH

ANIMALS/
HUMANS

Fig. 9.1. The spread of contaminant heavy metals to
the environment (After Salam, 2012).

Abdul Kadir Salam - 2014