Maidir le substaintí orgánacha, déanfar an acmhainn bhithbhailithe a aimsiú de ghnáth trí úsáid a bhaint as an gcomhéifeacht rannach ochtanól/uisce, a thuairiscítear de ghnáth mar log Kow.
For organic substances the potential for bioaccumulation shall normally be determined by using the octanol/water partition coefficient, usually reported as a log Kow.
Tugann an litríocht eolaíoch tacaíocht láidir don ghaolmhaireacht idir an log Kow de shubstaint orgánach agus a bith-thiúchan mar a thomhasann an fachtóir bitiúchana (BCF) in éisc í.
The relationship between the log Kow of an organic substance and its bioconcentration as measured by the bioconcentration factor (BCF) in fish has considerable scientific literature support.
Úsáidtear luach scoite log Kow ≥ 4 chun nach n-aithneofar ach na substaintí a bhfuil acmhainn bhitiúchana iarbhír acu.
Using a cut-off value of log Kow ≥ 4 is intended to identify only those substances with a real potential to bioconcentrate.
más féidir a léiriú, ar bhonnairíonna fisiceimiceacha (mar shampla loga Kow < 3) nó ar fhianaise eile go bhfuil acmhainneacht íseal ag an tsubstaint do bhith-thiúchan
it can be demonstrated on the basis of physico-chemical properties (e.g. log Kow < 3) or other evidence that the substance has a low potential for bioconcentration
I dtaca le tástálacha ar éisc maidir le tocsaineacht ghearrthéarmach i staid an tsutha agus i staid an ghilidín saic (OECD TG 212), ar cuireadh tús leo roimh an 14 Aibreán 2022 [OP, cuir isteach dáta theacht i bhfeidhm an Rialacháin leasaithigh], measfar iad a bheith iomchuí chun an ceanglas sin maidir le faisnéis a chomhlíonadh ar choinníoll nach an-lipifíleach an tsubstaint (loga Kow > 4) ná nach léirítear airí suaite inchríneach ná aon modh gníomhaíochta sonrach eile.”
Fish short-term toxicity tests on embryo and sac-fry stages (OECD TG 212) that were initiated before 14 April 2022 shall be considered appropriate to address this standard information requirement provided that the substance is not highly lipophilic (log Kow > 4) or there is no indication of endocrine disrupting properties or any other specific mode of action.’;
Teastaíonn faisnéis faoi airíonna fisiciceimiceacha eile freisin chun cinniúint an cheimiceáin nó an ábhair i gceist a shainaithint, meastachán a dhéanamh ar an nochtadh agus an chonair/na conairí nochta a shainaithint agus saintréithe riosca a thabhairt (e.g. airíonna amhail foirm fhisiceach an cheimiceáin nó an ábhair agus brú galuisce ábhartha le haghaidh sláinte an duine, tuaslagthacht uisce agus an chomhéifeacht rannach ochtánóil/uisce (Log Kow) ábhartha don chomhshaol).
Information about other physico-chemical properties is also needed to identify the fate of the chemical or material in question, estimate the exposure and identify the exposure pathway(s) and characterise risk (e.g., properties such as the chemical’s or material’s physical form and vapour pressure relevant for human health, or water solubility and the octanol water partition coefficient (Log Kow) relevant for the environment).