Hash ammonia nitrogen detection method

Determination methods of ammonia nitrogen: Nessler's reagent colorimetry, salicylic acid-hypochlorite colorimetry and electrode method are usually used. When the content of ammonia nitrogen is high, distillation-acid titration can be used.

The ammonia nitrogen analysis system uses salicylic acid or Nessler's method for determination. The operation process is simple, rapid, accurate and economical, and the determination results are in good contrast with traditional methods. The scheme includes a hash spectrophotometer and a matching hash reagent.

Ammonia nitrogen refers to nitrogen in the form of free ammonia (NH3) and ammonium ion (NH4) in water. Ammonia nitrogen is the main nutrient in water, which can lead to eutrophication. When ammonia nitrogen is converted into nitrite and nitrate in water, it consumes dissolved oxygen, which is the main oxygen-consuming pollutant in water and the main form of nitrogen in sewage. The "Twelfth Five-Year Plan" lists ammonia nitrogen parameters as important indicators for water quality detection.

The determination method of ammonia nitrogen in Hash Company adopts salicylic acid or Nessler's method. The operation process is simple, rapid, accurate and economical, and the determination results are in good contrast with traditional methods. The scheme includes a hash spectrophotometer and a matching hash reagent. Its main features are as follows:

Hash is determined by Nessler's reagent colorimetry and salicylic acid method, which conforms to the principle of national standard method, is convenient to operate and accurate to test.

Using kit, TNT pre-packed tube reagent and bar code reagent TNTplus, the operation method is simple and rapid, the result is accurate and the pollution is small.

Hash method is easy to use, simple to operate and has a built-in method curve. Press the key to get the result directly, which is very convenient and accurate.

Disadvantages of traditional methods:

The preparation process of Nessler's reagent in traditional methods is complicated, and there are many reagents used in salicylic acid method, which is easy to cause health damage and environmental pollution to experimenters.

The calibration curve needs to be drawn by yourself.