Assessing the Efficacy of a Sediment Remediation Program Using Benthic and Pelagic Copepod Bioassays.,Environmental Toxicology and Chemistry

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Assessing the Efficacy of a Sediment Remediation Program Using Benthic and Pelagic Copepod Bioassays.
Environmental Toxicology and Chemistry ( IF 3.6 ) Pub Date : 2019-11-06 , DOI: 10.1002/etc.4632
Maria P Charry _{1,

2} , Vaughan Keesing ₃ , Sally Gaw ₄ , Mark J Costello ₅ , Olivier Champeau ₁ , Louis A Tremblay _{1,

2}

Affiliation

Tributyltin is an organotin chemical that has been commonly used in ship antifouling paints. Despite the global total prohibition of tributyltin-based paint in 2008, tributyltin continues to be found at toxic levels in areas of high maritime traffic such as ports and harbors. A remediation program was conducted at a New Zealand port to reduce tributyltin and copper concentrations to acceptable values. The present study assessed the efficacy of the program using a combination of chemical analyses and copepod bioassays. Sediment and water samples were collected at 3 locations along a spatial gradient within the port, and concentrations of various organotin compounds and trace metal levels were measured pre- and postremediation. The toxicity of sediment and elutriate samples was estimated by benthic and pelagic copepod bioassays. Although acute toxicity in sediment samples was reduced following remediation, reproductive success was still affected for the benthic copepod. This approach combining chemical analysis and bioassays is promising for assessing the efficacy of remediation processes at contaminated marine sites. Environ Toxicol Chem 2020;39:492-499. © 2019 SETAC.

中文翻译：

使用底栖和远洋Co足类生物测定评估沉积物修复程序的功效。

三丁基锡是一种有机锡化学品，通常用于船舶防污漆中。尽管2008年全球全面禁止使用基于三丁基锡的涂料，但在港口和港口等海上交通流量大的地区，仍发现三丁基锡的毒性水平较高。在新西兰港口进行了补救计划，以将三丁基锡和铜的浓度降至可接受的水平。本研究结合化学分析和co足类生物测定法评估了该计划的有效性。在港口内沿空间梯度的3个位置收集沉积物和水样，并在修复前后对各种有机锡化合物的浓度和痕量金属水平进行了测量。底栖和浮游co足类生物测定法评估了沉积物和淘洗物样品的毒性。尽管修复后沉积物样品的急性毒性降低了，但底栖co足类的繁殖成功仍然受到影响。这种将化学分析和生物测定相结合的方法有望用于评估受污染的海洋地点的补救措施的效力。Environ Toxicol Chem 2020； 39：492-499。©2019 SETAC。

更新日期：2020-01-26

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