Some persistent pollutants, such as some organic pollutants and nuclear waste are absorbed very slowly or not at all; ecological economists emphasize minimizing "cumulative pollutants".
一些具持久性的污染物，例如某些有機污染物和核廢料，環境只能極之緩慢地甚至完全不能吸收；生態經濟學家強調把「累積性污染物」盡可能減到最少。