Contamination of bottom sediments by lead, zinc and cadmium in Rzeszow reservoir

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| 31 dic 2018

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Heavy metal	Geochemical background	I noncontaminated	II moderately contaminated	III highly contaminated	IV very highly contaminated
Pb	15	30	100	200	> 200
Cd	< 0.5	1	3.5	6	> 6
Zn	73	200	500	1000	> 1000

Location date and collection	Element	RME*	PEL/PEC	LEL/SEL	PGI	I_geo/class	LAW classification
1 VI 2018	Pb	↓	↓/↓	↓/↓	I	-0.01/0	I
	Cd	↓	↓/↓	↑/↓	I	0.20/I	II
	Zn	↓	↓/↓	↓/↓	I	0.01/I	I-II
2 VI 2018	Pb	↓	↓/↓	↓/↓	I	0.18/I	I-II
	Cd	↓	↓/↓	↓/↓	I	-4.44/0	I
	Zn	↓	↓/↓	↓/↓	I	-0.56/0	I
3 VI 2018	Pb	↓	↓/↓	↓/↓	I	0.08/I	I
	Cd	↓	↓/↓	↓/↓	I	-6.42/0	I
	Zn	↓	↓/↓	↓/↓	I	-0.54/0	I
4 VI 2018	Pb	↓	↓/↓	↓/↓	I	-0.73/0	I
	Cd	↓	↓/↓	↓/↓	I	-0.34/0	I-II
	Zn	↓	↓/↓	↓/↓	I	-0.99/0	I
5 VI 2018	Pb	↓	↓/↓	↓/↓	I	-0.77/0	I
	Cd	↓	↓/↓	↑/↓	I	0.08/I	II
	Zn	↓	↓/↓	↓/↓	I	-0.45/0	I
1 X 2018	Pb	↓	↓/↓	↓/↓	I	-0.73/0	I
	Cd	↓	↓/↓	↑/↓	I	0.01/I	II
	Zn	↓	↓/↓	↓/↓	I	-0.46/0	I
2 X 2018	Pb	↓	↓/↓	↓/↓	I	-0.07/0	I
	Cd	↓	↓/↓	↓/↓	I	-5.00/0	I
	Zn	↓	↓/↓	↓/↓	I	-1.01/0	I
3 X 2018	Pb	↓	↓/↓	↓/↓	I	0.07/I	I
	Cd	↓	↓/↓	↓/↓	I	-6.03/0	I
	Zn	↓	↓/↓	↓/↓	I	-0.59/0	I
4 X 2018	Pb	↓	↓/↓	↓/↓	I	-1.37/0	I
	Cd	↓	↓/↓	↑/↓	I	0.00/I	II
	Zn	↓	↓/↓	↓/↓	I	-0.07/0	I-II
5 X 2018	Pb	↓	↓/↓	↓/↓	I	-2.92/0	I
	Cd	↓	↓/↓	↑/↓	I	0.30/I	II
	Zn	↓	↓/↓	↑/↓	I	0.23/I	I-II

Heavy metal	RME	PEL	PEC	LEL	SEL
Pb	200	91	128	31	250
Cd	7.5	3.5	4.98	0.6	10
Zn	1000	315	459	120	820

Index Value Class	Class	Description quality of sediment
Igeo ≤ 0	0	uncontaminated
0 < Igeo < 1	1	uncontaminated contaminated to moderately
1 < Igeo < 2	2	moderately contaminated
2 < Igeo < 3	3	moderately contaminated to strongly
3 < Igeo < 4	4	strongly contaminated
4 < Igeo < 5	5	strongly contaminated to extremely
5 < Igeo	6	extremely contaminated

Element	Pb	Cd	Zn	Sediment quality
I	≤ 25	≤ 0.3	≤ 100	I - Uncontaminated
I-II	≤ 50	≤ 0.6	≤ 200	I-Moderately II - Contaminated polluted /
II	≤ 100	≤ 1.2	≤ 400	II - Moderately polluted
II-III	≤ 200	≤ 2.4	≤ 800	II-III - Moderately polluted / Heavily contaminated
III	≤400	≤ 4.8	≤ 1600	III - Heavily polluted
III-IV	≤ 800	≤ 9.6	≤ 3200	III-IV heavily - Strongly polluted / Very
IV	> 800	> 9.6	> 3200	IV - Very polluted heavily