Biocide leaching during field experiments on treated articles

Environmental Sciences Europe

Table 5 Concentration ranges of active substances in runoff samples depending on the orientation of the test specimens

Treated article	Orientation	n	Duration of sampling^a	Active substance	Concentration in runoff samples^b
			Duration of sampling^a		Minimum	Median	Maximum
			Months		µg/l	µg/l	µg/l
Paint C on fibre cement	Vertical	26	4.5	OIT	4	503	1991
	Vertical	26	4.5	Terbutryn	9	354	1049
	Horizontal	24	4.5	OIT	1	14	2164
	Horizontal	24	4.5	Terbutryn	2	43	416
Impregnated textile	Vertical	70^c	8	Carbendazim	22	2752	7545
Impregnated textile	Horizontal	19	8	Carbendazim	51	713	4288

n number of runoff samples
^aData represent single rain periods. Runoff samples from single rain periods were only analysed during the first few months of the experiment
^bData for horizontally exposed paint C on fibre cement and impregnated textile were obtained from experiments at MPA Eberswalde, data for vertically exposed paint C on fibre cement were obtained from the experiment at BAM (see Table 1)
^cData originate from four test specimens that were oriented to different directions (see Table 1)