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静水和滴水条件下碳酸盐岩溶解与主要元素释放规律初步研究
  • ISSN号:1001-4810
  • 期刊名称:《中国岩溶》
  • 时间:0
  • 分类:P599[天文地球—地球化学;天文地球—地质学]
  • 作者机构:[1]贵州大学林学院,贵州贵阳550025, [2]中国地质科学院岩溶地质研究所/国土资源部、广西壮族自治区岩溶动力学重点实验室/联合国教科文组织国际岩溶研究中心,广西桂林541004
  • 相关基金:中国地质调查项目(12120113005300);岩溶动力学重点实验室委托课题(岩溶委托2015-001,7k[2014]02-022-003,水[2013]-02-013-003)
中文摘要:

为进一步了解在静水和滴水条件下碳酸盐岩溶解与主要元素释放规律,文章选取在贵阳市花溪区贵州大学南校区、将军山、花溪水库三地分别采集的白云岩、灰质白云岩、石灰岩三类碳酸盐岩石为样本进行静水浸泡和动水滴溅试验,测定了静水与滴水条件下碳酸盐岩石的钾、磷、钙、镁四种主要元素的溶解量,结果表明:(1)在相同室温25℃,浸泡时长到达20d时,白云岩中四种元素溶解量均为最高,钾元素溶解量为0.00138μg/cm^3、磷元素溶解量为0.0006μg/cm^3、钙元素溶解量为199.75μg/cm^3、镁元素溶解量为70μg/cm^3,且三种碳酸盐岩石的钙元素溶解量分别为白云岩199.75μg/cm^3,灰质白云岩148.42μg/cm^3,石灰岩137.88μg/cm^3,远远高于其他三种元素的溶解量;(2)经过不同温度浸泡24h后,三类碳酸盐岩石中钾元素的溶解量随温度的升高而增大,并且在10~20℃条件下钾元素溶解速率最大,但温度的变化对于磷元素的溶解量影响不大;岩样养分含量中白云岩的钾元素与石灰岩的磷元素含量最少,但是随着温度的升高,它们的溶解量却是最大的;(3)静水浸泡状态下白云岩中元素的溶解量多数较高,而在动水滴溅状态中除白云岩的镁元素比石灰岩和灰质白云岩的镁元素溶解量高,试验的其他三种元素钾、磷、钙元素中都是石灰岩溶解量高;在动水滴溅的作用下,随着滴溅时间的增加,石灰岩的钙元素溶解量仅1h的滴溅时间就增加了2.55倍,超过了白云岩的钙元素溶解量。

英文摘要:

To further understand the dissolution of carbonate rock and the release of the major elements under the different conditions of stagnant and dripping water, three types of carbonate rock samples, i.e. dolomite, calcite dolomite, and limestone, were collected from Guizhou University South Campus in Huaxi district of Guiyang City, Jiangjun hill and Huaxi reservoir, respectively, to conduct the tests of soaking them in stagnant water and splashing them by dripping water. The dissolution of four major elements potassium (as K), phosphorus (as P), calcium (as Ca) and magnesium (as Mg) for each type of rock under each condition were measured. The results showed that: (1) at the same temperature 25 ℃, when soaking for 20 days, the highest dissolved amount on all four elements occurred in dolomite, i.e. K-0. 00138 μg/cm^3, P-0. 0006 μg/cm^3 , Ca-199.75 μg/cm^3 and Mg-70 μg/cm^3. Also, the dissolution of Ca were the highest in all three types of carbonate rocks, i. e. 199. 75 μg/cm^3 in dolomite, 148. 42 μg/cm^3 in calcite dolomite and 137.88μg/cm^3 in limestone, which was far higher than other three elements. (2) When soaking at different temperatures, the dissolution of K increased with temperature in all three types of carbonate rocks. At the temperature between 10 ℃ and 20 ℃, the dissolution rate of K reached to the maximum, while the dissolution of P showed very little response to temperature change. In terms of the constituent contents in the samples, K in dolomite and P in limestone had the lowest value; however, their dissolution was the largest when temperature increases. (3) Under the condition of rock soaking in stagnant water, the dissolution of most elements in dolomite was higher than other two types of carbonate rock. However, under the condition of splashing by dripping water, the dissolution of Mg was higher in dolomite than in calcite dolomite and lime- stone while the dissolution of all other three elements was higher in limestone. Under the condition of drippi

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期刊信息
  • 《中国岩溶》
  • 中国科技核心期刊
  • 主管单位:中国地质科学院
  • 主办单位:中国地质科学院岩溶地质研究所
  • 主编:蒋忠诚
  • 地址:广西桂林市七星路50号《中国岩溶》编辑部
  • 邮编:541004
  • 邮箱:carso@tom.com
  • 电话:0773-5812949
  • 国际标准刊号:ISSN:1001-4810
  • 国内统一刊号:ISSN:45-1157/P
  • 邮发代号:48-19
  • 获奖情况:
  • 中国期刊方阵"双效"期刊,广西优秀期刊,广西优秀自然科学期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),波兰哥白尼索引,美国地质文献预评数据库,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2014版)
  • 被引量:6943