研究人員在 2006 年至 2018 年間發現的 12 具虎鯨屍體內，發現常用於生產衛生紙的化學物質——化學化合物 4-壬基苯酚 (4NP) 。4NP含劇毒並對環境有害，會影響虎鯨的繁殖、神經系統和認知功能。研究人員還發現了其他污染物，但其中 46% 是 4NP。 4NP 還用於其他產品，如洗滌劑和化妝品。
Researchers found chemical often used in producing toilet paper in 12 dead orcas that were discovered between 2006-2018. The chemical compound, 4-nonylphenol (4NP) is very toxic and harmful to the environment. It can affect orcas’ reproduction, nervous system and cognitive function. There are other pollutants found as well but 46% of them were 4NP. 4NP is also used in other products like detergents and cosmetic items.