水质电导率测定方法
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摘要
建立一种适用于地表水、地下水、海水和废水电导率的测定方法。待测水样在4℃下密封保存,并于24 h内用校正过的电导率仪测定25℃时的电导率。当测定温度超出(25±0.1)℃范围时,需进行温度补偿。该方法针对不同样品,分别采用过滤法、萃取法及过滤–萃取法进行预处理,比较了干扰消除效果,结果表明过滤法适用于所有水样。对4种不同水体的水样进行测定,测定结果的相对标准偏差均小于0.6%(n=6)。验证结果表明,该方法具有较好的重复性和准确性。
A method for the conductivity determination of surface water, ground water, sea water and waste water was established. The water sample was sealed and stored at 4℃, and the conductivity of the water sample at 25℃ would be measured within 24 h by a calibrated conductivity meter. When the temperature of water sample was not at(25±0.1)℃, the test result needed to be compensated according to the temperature of measured water sample. The interference eliminating effect of filtration method, extraction method and filtration–extraction method were compared, and the filtration method was the best for all sorts of water samples. Water samples from 4 different water bodies were tested,and the relative standard deviations of the results were less than 0.6%(n=6). The verification results showed that this method had good repeatability and accuracy.
A method for the conductivity determination of surface water, ground water, sea water and waste water was established. The water sample was sealed and stored at 4℃, and the conductivity of the water sample at 25℃ would be measured within 24 h by a calibrated conductivity meter. When the temperature of water sample was not at(25±0.1)℃, the test result needed to be compensated according to the temperature of measured water sample. The interference eliminating effect of filtration method, extraction method and filtration–extraction method were compared, and the filtration method was the best for all sorts of water samples. Water samples from 4 different water bodies were tested,and the relative standard deviations of the results were less than 0.6%(n=6). The verification results showed that this method had good repeatability and accuracy.
引文
[1]郭照河,伊利军,隗玉霞.电导率在水质分析质量控制中的应用[J].水资源保护,2004,20(1):21.
[2]许洁茹,凌仕刚,王少飞,等.锂电池研究中的电导率测试分析方法[J].储能科学与技术,2018,7(5):926–955.
[3]马万征,赵芦,戴珊珊,等.不同电导率对温室黄瓜生长发育的研究[J].兰州文理学院学报(自然科学版),2018,32(4):45–48.
[4]李艳萍,高小其.电导率的测定及其在地震监测和水质分析中的应用[J].内陆地震,2001,15(1):88–92.
[5]王卉.自来水溶解性总固体与电导率相关性讨论[J].环境与发展,2018(8):155–157.
[6]金东春,焦阔,王旭东,等.基于电导率控制的生活污水回用至脱硫系统研究[J].工业水处理,2018,38(2):106–108.
[7]闻冬冬,何昌协,黄慧慧,等.电导率在线检测装置在铝合金中厚板生产中的应用[J].有色金属加工,2018,47(6):25–27.
[8]郑联英.水溶液电导率的测量方法研究[D].北京:北京化工大学,2007:1–35.
[9]苏永慧,刘光明.电导率温度校正计算方法的改进[J].重庆环境科学,1997(3):57–58.
[10]付川.电导率仪检定中的几个问题及解决方式[J].中国计量,2015(10):107–108.
[11]廖丽霞,廖春奇.水样电导率干扰因素的排除实验,地震学刊,2002,22(4):32–35.
[12] GB/T 5750.4–2006生活饮用水标准检验方法感官性状和物理指标电导率的测定[S].
[13] ISO 7888:1985 Water quality Determination of electrical conductivity[S].
[14] EN 27888–1993 Water quality Determination of electrical conductivity[S].
[15] SL 78–1994电导率的测定(电导仪法)[S].
[16] JIS K 0400–13–10–1999 Water quality Determination of electrical conductivity[S].
[17] EPA 120.1–1982 Conductance(speci?c conductance,umhos at25℃)[S].
[18] GB/T 18932 15–2003蜂蜜电导率测定方法[S].
[19] GB/T 13580.3–1992大气降水电导率的测定方法[S].
[20] GB/T 6908–2008锅炉用水和冷却水分析方法电导率的测定[S].
[21] DZ/T 0064.6–1993地下水质检验方法电导率的测定[S].
[2]许洁茹,凌仕刚,王少飞,等.锂电池研究中的电导率测试分析方法[J].储能科学与技术,2018,7(5):926–955.
[3]马万征,赵芦,戴珊珊,等.不同电导率对温室黄瓜生长发育的研究[J].兰州文理学院学报(自然科学版),2018,32(4):45–48.
[4]李艳萍,高小其.电导率的测定及其在地震监测和水质分析中的应用[J].内陆地震,2001,15(1):88–92.
[5]王卉.自来水溶解性总固体与电导率相关性讨论[J].环境与发展,2018(8):155–157.
[6]金东春,焦阔,王旭东,等.基于电导率控制的生活污水回用至脱硫系统研究[J].工业水处理,2018,38(2):106–108.
[7]闻冬冬,何昌协,黄慧慧,等.电导率在线检测装置在铝合金中厚板生产中的应用[J].有色金属加工,2018,47(6):25–27.
[8]郑联英.水溶液电导率的测量方法研究[D].北京:北京化工大学,2007:1–35.
[9]苏永慧,刘光明.电导率温度校正计算方法的改进[J].重庆环境科学,1997(3):57–58.
[10]付川.电导率仪检定中的几个问题及解决方式[J].中国计量,2015(10):107–108.
[11]廖丽霞,廖春奇.水样电导率干扰因素的排除实验,地震学刊,2002,22(4):32–35.
[12] GB/T 5750.4–2006生活饮用水标准检验方法感官性状和物理指标电导率的测定[S].
[13] ISO 7888:1985 Water quality Determination of electrical conductivity[S].
[14] EN 27888–1993 Water quality Determination of electrical conductivity[S].
[15] SL 78–1994电导率的测定(电导仪法)[S].
[16] JIS K 0400–13–10–1999 Water quality Determination of electrical conductivity[S].
[17] EPA 120.1–1982 Conductance(speci?c conductance,umhos at25℃)[S].
[18] GB/T 18932 15–2003蜂蜜电导率测定方法[S].
[19] GB/T 13580.3–1992大气降水电导率的测定方法[S].
[20] GB/T 6908–2008锅炉用水和冷却水分析方法电导率的测定[S].
[21] DZ/T 0064.6–1993地下水质检验方法电导率的测定[S].
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