盐度对厦门筼筜湖疏浚物-海水界面上镉交换作用的影响     

廖文卓  陈松 《台湾海峡》1992,(4)

本文报道了厦门筼筜湖疏浚物在不同盐度的天然海水中镉的溶出和被吸附的模拟研究结果。在相同条件下释放量(释放率)随介质盐度升高而增大,而被吸附能力降低。讨论了盐度的影响及溶出与再吸附所遵循的动力学规律。  相似文献   

铅从污染疏浚物的释放作用     

陈松  林汝健 《热带海洋》1992,11(4):1-5

  相似文献   

GEOCHEMISTRY OF ABYSSAL SEDIMENT IN THE PACIFIC OCEAN     

陈松  许爱玉  骆炳坤 《海洋学报(英文版)》1987,6(3):389-396

The contents of Fe, Mn, Cu, Co, Ni, Pb and Zn in the seaiment associated with manganese nodules from the Northern Central Pacific Ocean and in their acid-soluble fractions were determined and correlations among the elements and between the trace metals and environmental parameters were discussed. It has been found that the contents of Mn, Cu and Ni in the sediment are one order of magnitude higher than those in the common sediment. As shown in the manganese nodules, they may mainly derive from seabed. The contents of all trace metals in the sediment are obviously governed by Fe-and Mn-oxides, organic matter, seawater depth, particle size and Eh. Multi-element correlation equations were developed for all trace metals. The trace metals in acid-soluble fraction of the sediment were also much higher than ihose of common sediment and negatively correlated with water depth, implying the possible influence of carbonate speciation.  相似文献   

THE BEHAVIOR AND SEDIMENTATION MECHANISM OF Pb, Cu AND Cd IN SEDWAENTARY PHASE OF THE CHANGJIANG ESTUARY     

陈松  廖文卓  潘皆再 《海洋学报(英文版)》1984,3(2):212-220

The authors have determined the distributions of Ph, Cu and Cd ia surface sediment, acid-soluble fraction and interstitial water of the Changjiang Estuary and analysed the relationship between them and some environmental parameters, finding that there exists a quasi-equilibrium between the interstitial water and the sediment. The distribution of Pb or Cu in both phases it controlled mainly by the adsorptioa-desorption and deposition-solution processes of HFO" and org." in the sediments, whereas Cd is mainly controlled by the depoahisn-Jolution process of CdS. The sedimentation mechanism of Ph, Cu and Cd in the Changjlang Estuary is preliminarily proposed.  相似文献   

厦门西港表层沉积物对铅的吸附作用     

陈松  林汝健 《台湾海峡》1991,10(3):240-244

在海水介质中,模拟研究了厦门西港沉积物对Pb吸附过程的热力学和动力学性质,提出相应的定量模式,测定饱和吸附量、吸附速率常数和表观活化能等重要物化参数。结果表明,沉积物-Pb的吸附以化学作用为主,静电作用为辅。其吸附性质与水合氧化铁-Pb的吸附类似。  相似文献   

钛胶海水提铀动力学研究Ⅰ——吸附活化能测定——一种直接用于天然海水的测定方法     

陈松  廖文卓  许溪滨 《海洋学报》1981,3(1):79-85

在反应动力学中,活化能是一种比较基本的数据,它可以用于确定过程的动力学特性,和研究过程的机制.因此,活化能的测定是动力学研究的一个重要方面.其测定方法通常是以过程的动力学方程为基础,测定不同温度下的反应速率,并根据Arrhenius方程式计算得出.  相似文献   

THE STRUCTURE OF HYDROUS TITANIUM OXIDE AND ITS PROPERTIES OF EXTRACTION OF URANIUM FROM SEAWATER     

陈松  廖文卓  黄宣宝  唐锦龙 《海洋学报(英文版)》1982,1(1):77-81

Hydrous titanium oxide (HTO) is a better inorganic absorbent for the extractionof uranium from sea water. Although its structure has been proposed by some authors,little attention has been paid to the relation between the structure and the property ofuranium-untaking. Some relevant articles only concentrated their efforts on the in-terior structure and little was given to the investigation of its surface properties whichplay an important part in the property of uranium-uptaking.  相似文献   

钛胶海水提铀动力学研究Ⅲ——交换过程的扩散机理     

陈松  许爱玉  黄宣宝  许建中  田春兰 《海洋学报》1982,4(2):175-182

水合氧化钛是一种无机离子交换剂.它对海水中铀的吸附是一种较为复杂的离子交换过程.除了一般的离子交换外,可能还伴随有络合[螯合][1]过程.在一般的情况下,离子交换的决定步骤是离子扩散.根据体系的性质不同,可以是离子在交换剂粒子内部的扩散(粒子扩散),或是在围绕粒子周围的液膜内部的扩散(液膜扩散).  相似文献   

2008-6-18石棉M_L4.8级地震宏观考察     

戈培锋  顾鹏  范柱子  陈松  欧朝伦 《四川地震》2009,(1)

石棉县ML4.8地震使得安顺乡麂子坪村、松岗村,擦罗乡晏如村、海洋村,先锋乡松林村等地方少数房屋倒塌,大部分房屋受损。此前的5·12汶川特大地震已经对石棉县建筑物造成了较大破坏,这次地震又对受损房屋造成二次破坏,实地考察确定宏观震中烈度为Ⅵ度强(Ⅵ+),微观震中位于地震活动及现代新构造运动表现十分强烈的"麂子坪断裂"上,其宏观震中也落在该断裂上。  相似文献   

三峡库区黄土坡滑坡滑带工程地质特征研究   总被引：8，自引：1，他引：7  

陈松  徐光黎  陈国金  吴雪婷 《岩土力学》2009,30(10):3048-3052

在宏观分析滑坡地质特征的基础上,结合室内及现场试验对黄土坡滑坡Ⅰ号临江崩滑堆积体滑带土岩性、颗粒成分、矿物成分、微观结构、物理力学特征与崩滑体在水库回水条件下的变形进行分析研究。结果表明,滑带土中黏粒及粉粒含量较高,有明显的深层蠕变磨光面和擦痕,且含有亲水的黏土矿物成分和呈片状结构特征是滑带土在回水作用下易饱水软化的重要条件;滑带土饱水后力学强度降低是导致崩滑体蠕动变形的重要原因。  相似文献