地表水中电导率与氯化物、高锰酸盐指数的相关性研究
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摘要
地表水水质检测在水污染预警系统中是十分重要的环节。通过对地表水中电导率和氯化物、高锰酸盐指数相关性的数据分析,结果表明:电导率和氯化物在丰水期和枯水期均呈现出显著相关性,相关系数分别为0. 8667,0. 9192;电导率和高锰酸盐指数在丰水期有相关性,相关系数为0. 4483,在枯水期无相关性。根据显著性的一元线性回归方程公式,在该采样点,可推算出当电导率大于2000μs/cm左右的时候,咸潮就会出现,当电导率大于3000μs/cm左右,高锰酸盐指数的方法需改为碱性方法,同时在检测化学需氧量的过程中也需根据相关性公式,加入相应的硫酸汞来消除氯化物的干扰;在丰水期,当电导率大于400μs/cm左右,高锰酸盐指数会大于6 mg/L,超过地表水质量GB3838-2002的Ⅲ类水标准。可见在地表水检测中,根据数据分析讨论电导率,氯化物和高锰酸盐指数之间的相关性十分必要,这为实验室相关项目的检测、实验室在质量控制管理方面、政府相关部门进行水质预警管理均提供了重要的参考价值。
The detection of surface water quality is very important in the water pollution early-warning system.Through the data analysis of the correlation between the conductivity and the chloride,the permanganate index in surface water,the results showed that there was a significant correlation between conductivity and chloride in both the high and the dry season,the correlation coefficient was 0. 8667 and 0. 9192,respectively. A significant correlation was showed between conductivity and permanganate index in the high water season,whose correlation coefficient was 0. 4483,and there was no correlation in the dry season. According to the formula of the univariate linear regression equation of significance,it showed that when the conductivity was greater than 2000 μs/cm,the salty tide can be calculated,and when the conductivity was greater than 3000 μs/cm,the permanganate index method needed to be changed to a basic method. Meanwhile,in the process of detecting the chemical oxygen demand,the corresponding mercury sulfate was added to eliminate the interference of the chloride,and during the high water season,when the conductivity was greater than 400 μs/cm,the permanganate index was greater than 6 mg/L,which exceeded the Class Ⅲ water standard of surface water quality GB3838-2002. Therefore,it was necessary to discuss the correlation between conductivity,chloride and permanganate index according to the data analysis,which provided important reference value for laboratory related projects in the aspect of quality control and management,the relevant government departments water quality early warning management.
The detection of surface water quality is very important in the water pollution early-warning system.Through the data analysis of the correlation between the conductivity and the chloride,the permanganate index in surface water,the results showed that there was a significant correlation between conductivity and chloride in both the high and the dry season,the correlation coefficient was 0. 8667 and 0. 9192,respectively. A significant correlation was showed between conductivity and permanganate index in the high water season,whose correlation coefficient was 0. 4483,and there was no correlation in the dry season. According to the formula of the univariate linear regression equation of significance,it showed that when the conductivity was greater than 2000 μs/cm,the salty tide can be calculated,and when the conductivity was greater than 3000 μs/cm,the permanganate index method needed to be changed to a basic method. Meanwhile,in the process of detecting the chemical oxygen demand,the corresponding mercury sulfate was added to eliminate the interference of the chloride,and during the high water season,when the conductivity was greater than 400 μs/cm,the permanganate index was greater than 6 mg/L,which exceeded the Class Ⅲ water standard of surface water quality GB3838-2002. Therefore,it was necessary to discuss the correlation between conductivity,chloride and permanganate index according to the data analysis,which provided important reference value for laboratory related projects in the aspect of quality control and management,the relevant government departments water quality early warning management.
引文
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[2]徐祖信,尹海龙.城市河流水质常规评价技术研究[J].环境污染与防治,2005,27(7):515-518,534.
[3]翟晓丽,齐庆杰,赵晓亮.饮用水源水质评价的模糊聚类模型的研究[J].世界科技研究与发展,2012,34(4):582-584.
[4]邢蕊,张旭东,张学博.地表水中浊度与高锰酸盐指数的相关性研究[J].供水技术,2016,10(2):49-52.
[5]张洁,杨庆,潘璇,等.地下水电导率预测溶解性总固体的可行性研究[J].城市地质,2018.
[6]张登英,谭启后.对电导率、离子总量和全盐量相关性的探讨[J].水文,1988(6):44-47.
[7]刘路,高品,陈刚,等.城市河流各水期水质变化分析[J].中国环境监测,2012(2):115-118.
[8]洪小筠.闽江河口区水体氯离子浓度与电导率相关性研究[J].水利科技,2010(4):31-32.
[9]王福东,夏桂敏,王铁良,等.浑河及辽河沈阳段2001-2015年水污染变化特征及其对水体电导率的影响[J].中国农村水利水电,2018(3):44-49.
[10]徐变.浅析河道水中电导率对CODMN的影响[J].化工设计通讯,2016(4):206-206.
[11]廖丽华,朱争鸣,傅红.运河水中电导率与总硬度之间相关性的探讨[J].环境科技,1990(3):35-36.
[12]陈果平.地下水电导率与总硬度相关关系的研究[J].山东环境,2000(s1):110-111.
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