This instrument is a fully automated gas-phase molecular absorption spectrometer.

Main features:

1. Equipped with an 80 bit automatic sampling tray, the sample is placed into the tray, and the start button is pressed to start the measurement until it ends, completely controlled by software and automatically completed.

2. The host is equipped with an air pump, providing stable and invaluable purified air as the carrier gas;

3. Adopting a peristaltic pump for rapid and quantitative injection of samples and reagents;

4. Determine nitrate nitrogen and total nitrogen using a built-in constant temperature online heating device to provide the required temperature of the reaction solution in a timely manner;

5. Single sample determination, from injection → measurement results → determination of the next sample takes ≤ 50s.

technical indicators

1. Stability: 30min zero baseline drift ≤± 0.0001Abs, continuous stable working time greater than 12 hours;

2. Signal to noise ratio: zero baseline noise ≤± 0.0002Abs;

3. Detection limit: lower than the HJ/T195-200 (2005) standard method, the measured detection limit is as follows:

Ammonia nitrogen 0.005mg/L, nitrate nitrogen 0.003mg/L, nitrite nitrogen 0.001mg/L, total nitrogen 0.010mg/L

Kjeldahl nitrogen 0.01mg/L, sulfide 0.002mg/L, mercury 0.001/L.

4. Calibration curve correlation: r>0.999

5. Accuracy: ≤± 3%

6. Repeatability: RSD (n=6) ≤ 3%

7. Measurement range: 0.01~100mg/L