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Technical data Determination of the nitrate ion concentration in a water sampleArticle no: P8300410 ![]() Principle A colorimetric test kit can be used to quantitatively determine the nitrate ion content in water samples. By comparing the color of the sample with the color scale on the comparator, the nitrate concentration can be read directly. The more intense the color, the higher the nitrate content of the sample. Various water samples and a tap water sample are measured in this way and compared with one another. Tasks
Learning objective Students learn how to use a colorimetric test kit safely and correctly and how to read the measurements properly. They understand the chemical principles of nitrate detection and recognize the significance of nitrate as an environmental problem. In addition, they explore the effects of excessive nitrate pollution on aquatic ecosystems—from algal growth and eutrophication to the “collapse” of a lake—and learn about strategies that help reduce nitrate inputs into groundwater. Benefits
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