德国检验水、废水和污泥的标准方法.阳离子(E组).第3部分:络合滴定法测定钙和镁(E3)

详细信息   

• 中文主题词：水质 ; 水质试验 ; 水 ; 污泥检验 ; 钙 ; 质量 ; 测量规程 ; 络合方法 ; 废水检验 ; 镁 ; 化学分析和试验 ; 含量测定 ; 阳离子
• 标准号：DIN 38406-3-2002
• 发布日期：2002-03-01
• 英文题名：German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 3: Determination of calcium and magnesium, complexometric method (E 3)
• 英文主题词：water ; complexing methods ; quality ; magnesium ; calcium ; chemical analysis and testing ; cations ; examination of waste water ; examination of sludge ; determination procedures ; determination of content ; water quality ; water testing
• 标准状态：现行
• 发布单位：DE-DIN
• 国际标准分类号：13.060.50
• 载体形态：13P.;A4
• 中国标准分类号：Z23
• 国别：德国标准化学会

文摘

The document specifies two chemical methods. The first method is applicable to the determination of the mass concentration of calcium in ground water, surface water and drinking water in mass range from 2 mg/l to 100 mg/l (accordingly 0,05 mmol/l to 2,5 mmol/l). A higher calcium range the sample shall be diluted accordingly. The method is applicable to waste water, too, if there are no interfering concentrations of heavy metals. The second method is applicable to the determination of the sum of the concentration of calcium and magnesium in ground water, surface water and drinking water with concentrations of calcium and magnesium higher than 0,05 mmol/l. Sea water and water with comparable high salt contents as well as waste water shall not be examined with this method. In this case DIN EN ISO 7980 (atomic absorption spectrometric method) is suitable, for instance.