Temporal-spatial Change of Cr Content in Bottom Waters  

作　　者：Yang Dongfang Zhu Sixi Wang Fengyou Yang Xiuqin Zhao Xiaoli 

机构地区：[1]Karst Wetland Ecology Research Center,Guizhou Minzu University,Guiyang 550025,China [2]School of Chemistry and Environmental Sciences,Guizhou Minzu University,Guiyang 550025,China [3]North China Sea Environmental Monitoring Center,State Oceanic Administration,Qingdao 266033,China

出　　处：《Meteorological and Environmental Research》2017年第5期125-126,共2页气象与环境研究（英文版）

基　　金：Supported by the China National Natural Science Foundation(31560107);Doctoral Degree Construction Library of Guizhou Minzu University,Education Ministry’s New Century Excellent Talents Supporting Plan(NCET-12-0659);Innovation Group Major Program of Guizhou Province(KY[2013]405,KY[2016]029);Research Projects of Guizhou Province Ministry of Science and Technology(LH[2014]7376);Research Projects of Guizhou Minzu University([2014]02);Research Projects of Guizhou Province Ministry of Education(KY[2014]266)

摘　　要：Based on the investigation data of Jiaozhou Bay waters in 1981,current situation and horizontal distribution of Cr content in bottom waters of Jiaozhou Bay mouth were studied. Results showed that in bottom waters of Jiaozhou Bay center,Cr content changed from 0. 50 to3. 78 μg/L in April. In August,Cr content changed from 0. 14 to 1. 42 μg/L in bottom waters of Jiaozhou Bay mouth. It showed that Cr content corresponded with national class-one seawater quality standard(50. 00 μg/L) at different times and spaces,and Cr content was far less than5. 00 μg/L. Therefore,under the effect of vertical water body,water quality was clean in bottom waters of Jiaozhou Bay,which was not polluted by Cr. In bottom waters of Jiaozhou Bay center in April and bottom waters of Jiaozhou Bay mouth in August,Cr transported by the river came to the bottom layer from surface layer by passing through water body in temporal-spatial change process. Under the effects of gravity and water flow,Cr continuously and quickly sank to the sea bottom. It verified the sedimentation process of Cr content.Based on the investigation data of Jiaozhou Bay waters in 1981,current situation and horizontal distribution of Cr content in bottom waters of Jiaozhou Bay mouth were studied. Results showed that in bottom waters of Jiaozhou Bay center,Cr content changed from 0. 50 to3. 78 μg/L in April. In August,Cr content changed from 0. 14 to 1. 42 μg/L in bottom waters of Jiaozhou Bay mouth. It showed that Cr content corresponded with national class-one seawater quality standard(50. 00 μg/L) at different times and spaces,and Cr content was far less than5. 00 μg/L. Therefore,under the effect of vertical water body,water quality was clean in bottom waters of Jiaozhou Bay,which was not polluted by Cr. In bottom waters of Jiaozhou Bay center in April and bottom waters of Jiaozhou Bay mouth in August,Cr transported by the river came to the bottom layer from surface layer by passing through water body in temporal-spatial change process. Under the effects of gravity and water flow,Cr continuously and quickly sank to the sea bottom. It verified the sedimentation process of Cr content.

关 键 词：Cr CONTENT BOTTOM LAYER distribution Water quality Temporal-spatial CHANGE Jiaozhou BAY 

分 类 号：X55[环境科学与工程—环境工程]