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The through one year corrosion potential and polarization resistance for 3 kinds of steels in seabottom sediment of Liaodong
Bay were measured with the “MD” method.
The measurements will have some theoretical and practical values. The theoretical value lies in that the recorded changing
process of the practical corrosion case can be basis for indoor discussion and electrochemical research on the corrosion process.
The practical value lies in that the obtained data can be basis for designing and controlling electrochemical protection systems.
In fact, it is very difficult to measure in situ the corrosion parameters of steels in sea sediment.
Contribution No. 2611 from the Institute of Oceanology, Chinese Academy of Sciences.
This study is a major project of the Chinese Academy of Sciences. 相似文献
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INTRODUCTIONOverthepastseveralycars,considerableinteffethasbocenteIdontheenvir0nmentalbehaviouroftoxicandpersistritcomP0undssuchashalogenatalaromat-ies,inparticularthepolychiorinataldibopdioxins(PCDDe)andpolydil0rinateddi~fUtansrpCDFs).ManyofthesecomPounds,espedllythosewithahighdegere0fchiorinesubstitution,arehighlylipophiliccontawhnantSwithlowWhtersolubility,highre-sistancet0chdricaltransformationsandlowwhcrobiologhaldegradatfonpeatnnann,l988,Bromanetal.,l989,Hites,l990)whichexplain… 相似文献
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金属活动态提取法及其在黑龙江大兴安岭森林覆盖区的应用 总被引:1,自引:0,他引:1
文雪琴 《地球科学与环境学报》2006,28(4):43-48
介绍了金属活动态的理论依据、成晕机制及提取方法,并应用金属活动态提取法在大兴安岭原始森林覆盖区对已知矿进行试验研究,发现在高寒森林覆盖区,利用金的水提取态异常强度低,异常不明显,而金的粘土结合态和铁锰氧化物结合态异常清晰地反映在矿体上方,异常强度居于中等。金的有机质结合态异常值虽然高,但容易受有机质在样品中颗粒大小等因素的影响而使异常出现多个峰值。总之,利用金属活动态提取法在高寒森林覆盖区进行找矿可以快速有效地确定异常,但要注意排除过多有机杂质在提取过程中的影响。 相似文献
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内蒙古克什克腾旗黄岗山锡铜矿区北部及中部为第四纪冰川遗迹,在植被极其发育的地表之下为冰渍物、残坡积物等组成的碎石层,厚度多大于3m,因此开展地表地质工作有一定的难度。为提高找矿效果,开展了1∶1万激电测量工作。通过对激电异常的查证分析,在DJH-1号激电异常南西侧边界,燕山早期似斑状中细粒黑云母二长花岗岩与两侧石英闪长岩、花岗斑岩的内、外接触带附近发现有多期次岩浆侵入,矿化蚀变强烈,目前共圈定锡矿体10个、铜矿体8个;圈定的矿体和发现的激电异常具有较好的对应性,为进一步开展地质勘查工作提供了重要的依据。 相似文献