4Tło metali ciężkich

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'TABLE^^^Probable Background-Remote-Andent Concentrations of the Heavy Elements

Materiał	Pb	Cd	Hg	As	Se	Sb	/ In
Air	6-100	0.4	25	5	5-7	0.5-20	0.02-1
Pg m-^3	(40)*
Ice/snow	1-2	1-25	0.1-3	1-30		18
PSS^-1	(1)		(< 0.1)
Rock	12-40	0.001-2
PSS"^1	(12)
Soil	12-20	0.01-0.2	0.01
Pgg'^1	(5)
Sediment(f)	4-50	<0.1-0.5	0.01-0.2	2-5
^gg^-1	(10)		(0.004)
Sediment(o)	10-12	0.04-0.2	0.01-0.2
pgg*^1	(4)		(0.02)
Water (f)	5-50	10-100	2-100
ngl-^1	(20)
Water (o)	1-5	1-5	2-10
ngl-'	(0.5)		(< 10)
Animal (m)	1-12
"gr^1	(2)
Blood	0.83-5.2	0.57	1.43
Pg dl-'	(0.2)
Bonę	0.5-2
Hg gr^1	(0.4)
Fish	0.3-0.4
^nS 8T^1	(0.03)
Hair	1.2	0.31	1.0-3.8		0.29
pg?^1
Plant	0.005
pgg^-1	(0.002)
Teeth	<1-5	<0.1-1	4.0
Hgg*^1 * r?:_____■	(< 1)

* Figures in parenthesis are estimated natural levels, f = fresh water, o = ocean.

BACKGROUND LEVELS OF HEAW ELEMENTS NATURAL LEYELS OF THE HEAYY ELEMENTS

LEVELS IN REMOTE PLACES