Through salinity gradient , the major cations levels can be predicted with a linear mixing model . 2 . simulation results show that ph variation within the changjiang estuary has significant effect on solid - liquid partitioning of trace metals 模拟结果表明，长江口微量金属固-液分配的ph效应显著， ph的升高增大了微量金属在泥沙中的分配，并可促使微量金属元素向泥沙固相中转移。
The trace heavy metal determination instrument is a kind of instrument which combines the method of using ise and isfet microsensors based on a sensitive chalcogenide glass with the method of the stripping voltammetry to determinate the trace metals in seawater 船载海水重金属元素现场自动分析仪是一种联合离子选择性电极检测技术和溶出伏安检测技术自动检测海水中痕量重金属元素的仪器。
In order to avoid the influence of trace metal to the stability of ferrate ( vi ) , carbon fiber was more suitable , but it led to the problem of being prepared of the cathode , of emerging of the electrode ' s ear and of connecting between the base and shell 所以直流电解法是制备电池级kzfoo4较为理想的方法。六、将电池级固体kzfzo4与胶状石墨的混合物涂覆于玻炭电极、或填充于泡沫镍基体上，在0 ? 0
This paper briefly reviews the history and progress of trace metal marine ecotoxicology over the past few decades . three main areas of metal ecotoxicology are transport in the environment , accumulation and toxicity , as well as the risk assessment . we have seen tremendous progresses in these areas as a result of interdisciplinary efforts by biologists , chemists , engineers , governmental regulators and managers . i then discuss the future perspectives of metal ecotoxicology . it is expected that this field will receive increasing attention in china . certainly i hope that xiamen can become a center for metal ecotoxicology and biogeochemistry research 简要回顾了痕量金属的海洋生态毒理学研究的历史及过去几十年中所获得的进展.金属生态毒理学研究主要包括以下3个方向:环境中的转移,毒性积累及危险评估.在来自于多种学科的专家,包括生物学家,化学学家,工程师和政府监督管理人员等的共同努力下,这3个方向的研究都获得了长足的发展.同时对金属生态毒理学的未来进行了展望.可以预见的是,这门学科将在中国受到越来越多的关注.我更希望看到厦门能够成为未来金属海洋毒理学发展的中心
Based on solid - liquid interface ion exchange model , using in - situ data of ph , sediment concentration , trace metal and salinity in the changjiang estuary , solid - liquid phase transformation for metals cu , zn , cd , co , ni through salinity gradient was calculated , and the modeling results was compared with in - situ data sets reported in literature 华东师范大学博士学位论文摘要6 .在固一液界面离子交换模型的基础上，以长江口现场调查得到的ph 、悬浮泥沙浓度、金属浓度和盐度作为模型的输入量探讨了cu 、 zn 、 cd 、 c 。
For a given ph condition , adsorption of trace metals on to sediments in the changjiang estuary can be described by the langmuir equation , and implies that increase in trace metal concentrations at natural waters has limited effect on trace metal partitioning coefficients because of high turbidity . 5 在某一给定ph条件下，长江口悬浮泥沙对5种金属的吸附符合朗格谬尔关系，这表明，在高浑浊度天然水体中微量金属浓度的变化对它们在固-液两相之间的分配系数影响不大。
Increasing ph of water samples induces partitioning of metals to solid phases and hence transport of metals with suspended sediments . 3 . increase in concentration of sediment promotes adsorption for trace metals onto solid - phase in the estuary , but has little influence on partitioning coefficient for trace metals 水体悬浮泥沙浓度的增大将普遍提高体系中微量金属在固相中的吸附，但对微量金属的固-液分配系数k _ d (为金属在泥沙固相中的质量浓度与其在溶液相中的体积浓度之比值)的影响并不显著。
The experimental results illustrate that " particle - concentration effects " for trace metals reported in literature are mainly due to the particle dynamics in the estuary . 4 . the adsorption percentage ratios of adsorptions and partitioning coefficients for trace metals in the changjiang estuary decease significantly with higher concentrations of elements 这一模拟研究结果说明，通常文献报道的在河口混合区某些情况下的微量金属固-液分配的所谓“颗粒物浓度效应”主要与河口现场泥沙颗粒的物理动力学过程有关。
