Bioaccumulation of heavy metals in fish, crustaceans, molluscs and echinoderms from the Tuscany coast
Bioaccumulation of heavy metals in fish, crustaceans, molluscs and echinoderms from the Tuscany coast
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DOI：
10.1016/j.ecoenv.2018.07.044
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发表时间：
2018-10-30
影响因子：
6.8
通讯作者：
Sprovieri, Mario
中科院分区：
文献类型：
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作者：
Bonsignore, Maria;Manta, Daniela Salvagio;Sprovieri, Mario
分析了托斯卡纳海岸（北方意大利）敏感地区采集的几种鱼类、甲壳类动物、软体动物和棘皮动物的可食部分中As、Cd、Cr、Cu、Hg、Ni、Pb和Zn的浓度。砷（0.39-78.1 μ g g g（-1））和汞（0.01-1.56 μ g g（-1））的浓度在大多数情况下都高于参考阈值。计算了目标危害商数（THQ）和终生癌症风险（TR）指数，以评估口腔接触导致的癌症和非癌症风险;最高THQ值涉及As和Hg，分别有39%和48%的病例数值>= 1。总目标危险物质值表明，当地人口可能因食用当地海产品，主要是底栖和底栖物种而受到不利的健康影响。癌症的风险主要与砷暴露，镉的摄入量，特别是通过软体动物的消费。NMDS模型强调了物种特定的生物累积过程和物种对不同生物可利用重金属的特定敏感性。具体地，Mullus spp.在重金属Pb和Zn含量上，普通章鱼表现出明显的富集性，而虾蛄则表现出明显的富集性。此外，重金属在生物体中的分布揭示了福洛尼察和利沃诺采样点之间的声音差异，表现出高度异质性的重金属输入的工业活动休息在陆地上的人为影响。
The concentration of As, Cd, Cr, Cu, Hg, Ni, Pb and Zn were analyzed in the edible part of several species of fish, crustaceans, molluscs and echinoderms collected in sensitive areas of the Tuscany coast (northern Italy). The concentration of As (0.39-78.1 mu g g(-1) ) and Hg (0.01-1.56 mu g g(-1)) resulted in most cases higher than reference thresholds. Target hazard quotient (THQ) and lifetime cancer risk (TR) indexes were calculated to assess cancer and non-cancer risk due to oral exposure; the highest THQ values referred to As and Hg, with values >= 1 in 39% and 48% of cases, respectively. Total target hazard quotients (TTHQ) values suggested that the local population could experience adverse health effects due to consumption of local seafood, mainly of demersal and benthic species. Cancer risk was mainly associated with As exposure, and with Cd intake, especially through molluscs consumption. The NMDS model highlighted species specific bioaccumulation processes and specific sensitivity of species to different bioavailable heavy metals. Specifically, Mullus spp. and Scorpaena porcus preferentially accumulate Hg and Cr, Octopus vulgaris specimens were discriminated by the presence of Pb and Zn, while an evident preference for Cd and Cu was recorded in Squilla mantis. In addition, the distribution of heavy metals in organisms revealed sound differences between Follonica and Livorno sampling sites, demonstrating a highly heterogeneous anthropogenic impact in terms of heavy metals input from the industrial activity resting on land.