Release of substances from joint grouts based on various binder types and their ecotoxic effects

Environmental Sciences Europe

Table 2 Selected cations in DSLT eluates from different grouts

Code	Binder	n	As	Al	Ba	Co	Cu	Cr	Mn	Mo	Ni	Pb	Sb	Zn
Code	Binder	n	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹	in µg L⁻¹
LAWA GfS			3.2		175	2.0	5.4	0.3		35	7.0	1.2	5.0	60
MOE1	ER	5	0.38		1.73		8.14		5.6	10.3		2.93	0.26	25.4
MOE6	ER	2	0.39		14.7		13.3				5.63
MOE2	PB	2	0.19		6.38	1395	25.4		272			27.7		33.0
MOE7	PB	5			3.65		6.49		829		3.16	2.03	0.18
MOE3	MC	2		515	1292		4.45				16.0		0.79
MOE4	MC	2		24,400	31.5		2.09	4.62		6.40	3.14		0.73
MOE5	PU	2			1.49		2.15				3.55	0.82	0.07
MOE8	PU	2			1.40		3.11				1.90

Selection criteria: elements that are included in the LAWA list of threshold values (LAWA GfS, ‘Geringfügigkeitsschwellenwert’) from 2016 [31] complemented by aluminum and manganese; concentrations in the range of the LOQs (limits of quantification) are not included; mean values from number of experiments (n),
Abbreviations for binders: ER epoxy resin, PB polybutadiene, MC modified cement, PU polyurethane