nhfs49 said:Can someone tell me where to find the details of this procedure. I couldn't find anything on net, and i cannot buy the ASTM Book.
Thanks in advance.
Kjeldahl-Nitrogen is a method used to determine the total nitrogen content in a sample, usually in the form of ammonia or organic nitrogen compounds. It involves a series of chemical reactions to convert all forms of nitrogen into ammonia, which can then be measured and quantified.
Leachate is a liquid that forms when water passes through waste materials, such as in landfills. It can contain high levels of nitrogen, which can contribute to pollution in surrounding areas if not properly managed. Measuring Kjeldahl-Nitrogen in leachate can help determine the potential for environmental harm and inform waste management practices.
The procedure typically involves collecting a representative sample of the leachate, adding sulfuric acid to convert all forms of nitrogen into ammonia, and then distilling the ammonia into a receiving solution. The amount of ammonia in the receiving solution is then measured, and the total Kjeldahl-Nitrogen content is calculated based on this measurement.
The Kjeldahl-Nitrogen method only measures the total nitrogen content and does not differentiate between different forms of nitrogen. It also requires specialized equipment and chemicals, making it more time-consuming and expensive compared to other nitrogen analysis methods. Additionally, the accuracy of the results can be affected by factors such as sample preparation and human error.
The results of Kjeldahl-Nitrogen analysis can provide valuable information for waste management and environmental protection. It can help determine the effectiveness of treatment processes for leachate, monitor changes in nitrogen levels over time, and inform decision-making for waste management practices. It can also be used to assess compliance with regulatory standards for nitrogen levels in leachate.