Ordinance
on the Reduction of Risks relating to the Use of Certain Particularly Dangerous Substances, Preparations and Articles
(Chemical Risk Reduction Ordinance, ORRChem)

Ar­sen­ic (As)

13

Cad­mi­um (Cd)

0.7

Chro­mi­um (Cr)

70

Cop­per (Cu)

70

Mer­cury (Hg)

0.4

Nick­el (Ni)

25

Lead (Pb)

45

Zinc (Zn)

200

Poly­cyc­lic aro­mat­ic hy­dro­car­bons(PAH)

4 mil­li­grams per kilo­gram of dry mat­ter¹

Poly­chlor­in­ated bi­phen­yls (PCB)

0.2 mil­li­grams per kilo­gram of dry mat­ter²

Di­ox­ine (PCDD) and Fur­ane (PCDF)

20 nano­grams WHO₂₀₀₅-TEQper kilo­gram of dry mat­ter³

¹

Sum of the fol­low­ing 16 PAH com­pounds on the EPA pri­or­ity pol­lut­ants list: napthalene, acenaph­thyl­ene, acenaph­thene, fluorene, phen­an­threne, an­thra­cene, fluor­anthene, pyrene, benzo[a]an­thra­cene, chrysene, enzo[b]fluor­anthene, benzo[k]fluor­anthene, benzo[a]pyrene, in­deno[1,2,3-cd]pyrene, dibenzo[a,h]an­thra­cene and benzo[ghi]perylene. De­term­ined by means of two-hour re­flux ex­trac­tion with tolu­ene.

²

Sum of the 7 con­gen­ers ac­cord­ing to the In­sti­tute for Ref­er­ence Ma­ter­i­als and Meas­ure­ments), IUPAC No 28, 52, 101, 118, 138, 153 and 180. De­term­ined by means of six-hour Soxh­let ex­trac­tion with tolu­ene or ac­cel­er­ated solvent ex­trac­tion.

³

Tox­ic equi­val­ency as re­com­men­ded by the World Health Or­gan­isa­tion (WHO) fol­low­ing a con­sulta­tion of ex­perts in 2005. Ref­er­enz: Mar­tin van den Berg et al. (2006) The 2005 World Health Or­gan­iz­a­tion Ree­valu­ation of Hu­man and Mam­mali­an Tox­ic Equi­val­ency Factors for Di­ox­ins and Di­ox­in-Like Com­pounds. Tox­ic­o­lo­gic­al sci­ence 93(2):223–241; ht­tps://doi.org/10.1093/tox­sci/kfl055. De­term­ined by means of 20-hour Soxh­let ex­trac­tion with tolu­ene or ac­cel­er­ated solvent ex­trac­tion.