48 The Hong Kong Branch research team led by Dr. Simpson developed a new strategy to improve the usefulness of diffusive gradients in thin films (DGT) technique for sediment quality risk assessments. The team used the simpler and more cost-effective piston DGTs rather than planar DGT probes to measure bioavailable metal fluxes in naturally contaminated sediments with widely varying composition and assessed their prediction of toxicity to amphipod reproduction in a flow-through microcosm. This study highlights that the adverse effects induced by excessive bioavailable metals in contaminated sediments can be consistently sensed by the DGT pistons. The research findings have been published on Environmental Science & Technology. Reference: Environmental Science & Technology 2021, 55, 7355–7364 香港分部Stuart L. Simpson博士研究团 队通过利用简单有效的活塞来代替平面薄 膜，大大提高了薄膜扩散梯度技术对沉积 物进行质量风险评估的实用性。此新探 针可用于测量包含不同成分的自然污染沉 积物中生物可利用金属的流通量，并评 估它们对片脚类生物的繁殖毒性。这一 研究成果为沉积物中金属的风险评估提供 了新策略，研究成果发表于国际科学期刊 Environmental Science & Technology。 Develop an In-situ Sensing Technology: Improving Toxicity Predictions for Sediments 開发原位傳感技術：提升對沉積物毒性的預測准確度 Dr. Stuart Simpson 博士 Commonwealth Scientific and Industrial Research Organization 澳洲联邦科学与工业研究组织水土部 Deployment of DGT pistons and toxicity test setup for different type of sediments 薄膜扩散梯度活塞装置以及对不同类型沉积物毒性测试装置
RkJQdWJsaXNoZXIy NDk5Njg=