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Trophic Transfer and Toxicity of (Mixtures of) Ag and TiO2 Nanoparticles in the Lettuce–Terrestrial Snail Food Chain
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-11-29 , DOI: 10.1021/acs.est.1c05006 Juan Wu 1 , Thijs Bosker 1, 2 , Martina G Vijver 1 , Willie J G M Peijnenburg 1, 3
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-11-29 , DOI: 10.1021/acs.est.1c05006 Juan Wu 1 , Thijs Bosker 1, 2 , Martina G Vijver 1 , Willie J G M Peijnenburg 1, 3
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The increasing application of biosolids and agrochemicals containing silver nanoparticles (AgNPs) and titanium dioxide nanoparticles (TiO2NPs) results in their inevitable accumulation in soil, with unknown implications along terrestrial food chains. Here, the trophic transfer of single NPs and a mixture of AgNPs and TiO2NPs from lettuce to snails and their associated impacts on snails were investigated. Both AgNPs and TiO2NPs were transferred from lettuce to snails with trophic transfer factors (defined as the ratio of the Ag/Ti concentration in snail tissues to the Ag/Ti concentration in lettuce leaves) of 0.2–1.1 for Ag and 3.8–47 for Ti. Moreover, the majority of Ag captured by snails in the AgNP-containing treatments was excreted via feces, whereas more than 70% of Ti was distributed in the digestive gland of snails in the TiO2NP-containing treatments. Additionally, AgNP-containing treatments significantly inhibited the activity of snails, while TiO2NP-containing treatments significantly reduced feces excretion of snails. Furthermore, the concurrent application of AgNPs and TiO2NPs did not affect the biomagnification and distribution patterns of Ag and Ti in snails, whereas their co-existence exhibited more severe inhibition of the growth and activity of snails than in the case of applying AgNPs or TiO2NPs alone. This highlights the possibility of nanoparticle transfer to organisms of higher trophic levels via food chains and the associated risks to ecosystem health.
中文翻译：
生菜-陆生蜗牛食物链中银和二氧化钛纳米粒子（混合物）的营养转移和毒性
含有银纳米颗粒（AgNP）和二氧化钛纳米颗粒（TiO 2 NP）的生物固体和农用化学品的应用不断增加，导致它们不可避免地在土壤中积累，对陆地食物链产生未知的影响。在此，研究了单一纳米粒子以及AgNPs和TiO 2 NPs混合物从生菜到蜗牛的营养转移及其对蜗牛的相关影响。 AgNP 和 TiO 2 NP 均从生菜转移到蜗牛，其中 Ag 的营养转移因子（定义为蜗牛组织中的 Ag/Ti 浓度与生菜叶片中的 Ag/Ti 浓度之比）为 0.2-1.1，Ag 为 3.8-47。对于钛。此外，含AgNP处理中蜗牛捕获的Ag大部分通过粪便排出体外，而含TiO 2 NP处理中超过70％的Ti分布在蜗牛的消化腺中。此外，含AgNP处理显着抑制了钉螺的活动，而含TiO 2 NP处理显着减少了钉螺的粪便排泄。此外，AgNPs和TiO 2 NPs的同时施用并没有影响Ag和Ti在蜗牛体内的生物放大和分布模式，而它们的共存对蜗牛的生长和活性的抑制比施用AgNPs或TiO 2 NPs的情况更严重。单独的TiO 2 NP。这凸显了纳米颗粒通过食物链转移到更高营养级生物体的可能性以及对生态系统健康的相关风险。
更新日期：2021-12-21
中文翻译：
生菜-陆生蜗牛食物链中银和二氧化钛纳米粒子（混合物）的营养转移和毒性
含有银纳米颗粒（AgNP）和二氧化钛纳米颗粒（TiO 2 NP）的生物固体和农用化学品的应用不断增加，导致它们不可避免地在土壤中积累，对陆地食物链产生未知的影响。在此，研究了单一纳米粒子以及AgNPs和TiO 2 NPs混合物从生菜到蜗牛的营养转移及其对蜗牛的相关影响。 AgNP 和 TiO 2 NP 均从生菜转移到蜗牛，其中 Ag 的营养转移因子（定义为蜗牛组织中的 Ag/Ti 浓度与生菜叶片中的 Ag/Ti 浓度之比）为 0.2-1.1，Ag 为 3.8-47。对于钛。此外，含AgNP处理中蜗牛捕获的Ag大部分通过粪便排出体外，而含TiO 2 NP处理中超过70％的Ti分布在蜗牛的消化腺中。此外，含AgNP处理显着抑制了钉螺的活动，而含TiO 2 NP处理显着减少了钉螺的粪便排泄。此外，AgNPs和TiO 2 NPs的同时施用并没有影响Ag和Ti在蜗牛体内的生物放大和分布模式，而它们的共存对蜗牛的生长和活性的抑制比施用AgNPs或TiO 2 NPs的情况更严重。单独的TiO 2 NP。这凸显了纳米颗粒通过食物链转移到更高营养级生物体的可能性以及对生态系统健康的相关风险。
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