Laboratory leaching tests on treated wood according to different harmonised test procedures

Environmental Sciences Europe

Table 2 Test data from TS-2 (mg/m ² in 36 days) and OECD 313 (mg/m ² in 29 days) experiments

Duration of storage^a	Name of the experiment	Repetition	Cumulative emission								pH range
Duration of storage^a			Cu		Tebuconazole		DOC		TN		Max	Min
[weeks]			[mg/m²]	SD	[mg/m²]	SD	[mg/m²]	SD	[mg/m²]	SD	Max	Min
7	L/A 8 control		<LOD		<LOD		37,445		126		5.83	4.76
	L/A 2.2	1	591		19.5		44,678		7,955		7.21	6.46
	L/A 5	1	510		28.5		47,214		7,603		7.37	6.34
	L/A 8	1	426		29.3		46,852		7,497		7.40	6.37
		2	399		27.9		44,744		7,160		7.96	6.24
		3	401		29.4		46,797		7,218		7.27	6.45
	L/A 9	1	450		31.2		45,464		7,572		7.44	6.55
	L/A 8	Mean	409	15	28.9	0.8	46,131	1,201	7,292	180
	All experiments	Mean	463	75	27.6	4.1	45,958	1,135	7,501	289
39	L/A 8 rep control		<LOD		<LOD		13,550		352		5.86	4.75
	L/A 2.2 rep	2	1,036		20.0		34,654		6,139		6.96	6.24
	L/A 2.2 rep	3	1,000		19.9		34,024		5,706		7.29	6.10
	L/A 5 rep	2	867		28.7		34,746		5,968		7.52	6.28
	L/A 8 rep	4	764		39.2		36,443		6,047		7.81	6.34
	L/A 8 rep	5	890		39.0		36,470		6,126		8.61	6.35
	L/A 8	Mean	827		39.1		36,457		6,087
	All experiments	Mean	911	109	29.4	9.6	35,267	1,121	5,997	177
8	OECD 313 control		<LOD		<LOD		32,405		139		5.03	4.72
	OECD 313	1	499		18.8		44,670		4,337		6.80	6.40
		2	520		19.6		45,876		4,320		6.78	6.50
		3	503		17.6		46,134		4,569		6.75	6.45
	OECD 313	Mean	507	11	18.7	1.0	45,273	782	4,409	139
	OECD 313^a control						22,326		76		4.60	4.22
	OECD 313^a	1	425		22.5		37,550		6,308		7.12	6.60
68	OECD 313^a rep	2	834		16,9		^b		^b		6.04	5.59

Experiments at conditions stipulated in TS-2 and OECD 313 are indicated by italics. Mean data of parallel experiments according to these conditions are indicated by italic entries.
^a‘Duration of storage’ refers to treated test specimens. SD, standard deviation (mg/m²); ‘control’, experiment with untreated wood; OECD 313, test specimens (1.5 × 2.5 × 5 cm³); OECD 313^a, test specimen as in TS-2 (2.5 × 5 × 15 cm³).
^bDuring the first four immersion periods (4 days), DOC emissions were about 80%, and TN emissions were about 50% of the amounts detected during the same period of time in the related experiment with test specimens after 8 weeks of storage of the treated test specimens.