In addition, refineries decreased the amount of butane added to summer gasolines in Canada in 1991 to reduce their volatility and thus minimize VOC releases during refuelling and transfer (CPPI 1991b).
De plus, en 1991, les raffineries ont diminuÃ© la quantitÃ© de butane ajoutÃ©e aux essences d'Ã©tÃ© au Canada pour abaisser leur volatilitÃ© et, par consÃ©quent, rÃ©duire les Ã©missions de COV pendant les transferts et les pleins en station (ICPP, 1991b).