Summary
The ammonia ion selective electrode method was the most practical and the most convenient one for measuring the ammonia nitrogen in methanogenic sludge. This is because of its simplicity, rapidity, high precision and accuracy, freedom from interference, small sample size, and possibility for continuous monitoring.
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LeDuy, A., Samson, R. Testing of an ammonia ion selective electrode for ammonia nitrogen measurement in the methanogenic sludge. Biotechnol Lett 4, 303–306 (1982). https://doi.org/10.1007/BF00132830
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DOI: https://doi.org/10.1007/BF00132830