Monitoring of Lead in Topsoil, Forage, Blood, Liver, and Kidneys in Cows in a Lead-Polluted Area in Slovenia (1975–2002) and a Case of Lead Poisoning (1993)

Table 3

Mean lead concentrations in topsoil, hay, silage, liver, and kidney of cows from farms near the lead mine and smelter before the installation of bag filter system in 1975/1976 and after the installation from 1979 to 2002.

Year of research	Topsoil∗ (min-max or mean mg/kg)	Hay (mg/kg DM)	Silage (mg/kg DM)	Liver (mg/kg WW)	Kidney (mg/kg WW)
1975	192 to 1,558 (𝑛=33)	584.0±324.0(𝑛=4)	—	—	—
1976	—	821.0(𝑛=1)	—	—	—
1979	—	69.10±61.3(𝑛=13)	—	5.23±2.3(𝑛=3)	8.12±3.1(𝑛=5)
1980	—	48.9±28.2(𝑛=13)	—	3.06±1.9 (𝑛=7)	6.23±1.9(𝑛=6)
1981	—	34.5±29.6(𝑛=13)	—	1.74±0.7(𝑛=8)	6.49±1.4(𝑛=5)
1982	350.4±331.3(𝑛=9)	13.6±3.8(𝑛=13)	—	0.44(𝑛=1)	5.93±0.9(𝑛=4)
1983	320.6±198.8(𝑛=9)	22.2±8.1(𝑛=13)	—	6.67±0.8(𝑛=2)	1.20(𝑛=1)
1984	370.2±278.3(𝑛=9)	34.1±18.2(𝑛=13)	—	8.00(𝑛=1)	5.62(𝑛=1)
1985	51.3−310.5(𝑛=9)	23.3±12.6(𝑛=13)	—	0.85(𝑛=1)	1.21(𝑛=1)
1986	42.5−720.4(𝑛=5)	17.8±13.0(𝑛=11)	—	—	—
1987	390.4±281.3(𝑛=9)	18.5±11.1(𝑛=10)	—	—	—
1989	400.4±239.1(𝑛=9)	18.0±8.3(𝑛=12)	—	—	—
1990	—	17.2±9.7(𝑛=12)	—	—	—
1991	—	18.1±10.4(𝑛=12)	—	—	—
1992	—	13.6±7.4(𝑛=12)	—	—	—
1993	—	8.0±2.4(𝑛=2)	—	—	—
1994	—	3.4±2.1(𝑛=4)	—	—	—
1995	—	11.4±4.2(𝑛=4)	—	—	—
1996	—	6.9±3.1(𝑛=6)	12.5±3.6(𝑛=4)	—	—
1997	—	6.5±3.8(𝑛=14)	12.8±1.2(𝑛=10)	—	—
1998		8.3±4.2(𝑛=12)	3.5(𝑛=1)	—	—
1999	619.1±321.9(𝑛=3)	10.3±3.9(𝑛=13)	15.0±3.6(𝑛=3)	—	—
2000	454.8±278.2(𝑛=3)	7.2±4.6(𝑛=14)	7.3±2.6(𝑛=6)	—	—
2001	283.6±189.2(𝑛=8)	6.5±3.7(𝑛=12)	4.7±1.8(𝑛=6)	—	—
2002	347.5±300.1(𝑛=10)	5.6±3.3(𝑛=12)	8.8±2.2(𝑛=5)	—	—

∗Research of topsoil samples encompassed the farms nearby the smelter [2, 3, 22].