Question

What four analytical methods can be used for ammonia nitrogen measurement​

Answer 1

The common methods for quantitative analysis of ammonia nitrogen in natural water are the indophenol blue (IPB) spectrophotometric methods and o-phthalaldehyde (OPA) fluorometric methods [4]. The IPB spectrophotometric methods are based on the Berthelot reaction [5], [6], [7], [8], [9], [10], [11].

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