Contamination of Soil with Pb and Sb at a Lead-Acid Battery Dumpsite and Their Potential Early Uptake by Phragmites australis

Table 2

Concentrations of Pb and Sb in tissues of P. australis harvested from different soil treatments after 8 and 16 weeks of planting. Values are expressed as mean ± SD of triplicate measurements in mg/kg, DW.

Element	Growth period (wks)	Nonrecycled slag treatment			Recycled slag treatment			Reference soil treatment
		Root	Leaf	Stem	Root	Leaf	Stem	Root	Leaf	Stem
Pb	8	136.57 ± 18.91	8.77 ± 0.90	2.88 ± 0.27	98.90 ± 12.76	7.83 ± 1.74	2.63 ± 0.30	ND	ND	ND
	16	590 ± 36	8.61 ± 1.04	2.76 ± 0.38	466.67 ± 25.17	8.04 ± 0.23	2.96 ± 0.12	ND	ND	ND
Sb	8	67.83 ± 9.97	3.33 ± 0.36	1.45 ± 1.91	47.84 ± 3.86	2.89 ± 0.19	1.56 ± 0.23	ND	ND	ND
	16	260 ± 20	3.47 ± 0.32	1.73 ± 0.171	205 ± 18	2.94 ± 0.21	1.50 ± 0.16	ND	ND	ND

ND: not detected (<LOD). Different superscripts (a, b) in a row denote significantly different concentrations () of a given element for a plant tissue across treatments; in a column denotes significantly different concentrations (paired -test, ) for a given element for a specific plant tissue between 8- and 16-week growth periods within a soil treatment.