GMA3760Introduction to Gas Phase Molecular Absorption Spectrometer

Measurement items: mainly used for measuring ammonia nitrogen, sulfidesnitric acid

Salt nitrogen, nitrite nitrogen, total nitrogen, Kjeldahl nitrogen, mercury, etc. Satisfy the Mostnew national standardGB/T 42027-2022The requirements.

optical system

light source Deuterium lamp light source system/(The cathode lamp light source system is only applicable to GMA3710) And comply withenvironmental standardsHJ/T195-2005~

HJ/T200-2005 Requirements for light sources; Wavelength Repeatability≤0.1nm；

Detector: CCD(Diode array)

main features

■Fully automatic and portable design, highly integrated, lightweight structure；

■Advanced cold trap technology, using polytetrafluoroethylene material as the reaction tube, makes gas-liquid separation more efficient Thoroughly, no desiccant is needed.

■Equipped with a water removal system, no desiccant is used during the entire analysis process;

■Equipped with an electronic pressure alarm system: in case of changes in carrier gas flow rate and pressure, or Gas system malfunction, automatic buzzer alarm and automatic shutdown of injection and heating system, while locking Designated software;

■Blow homogenization system (sample stirring device)），Inject gas and stir, automatically removeVOC Waiting for interference;

■When measuring ammonia nitrogen, Only one sampling can be conducted to simultaneously determine ammonia in the sampleNitrogen and nitrite Acid salt nitrogen content;

■Equipped with an integrated module for total nitrogen UV online digestion and dilution: achieving continuous automatic total nitrogen Online digestion, with online dilution function and automatic configuration of standard curve;

■Having nitrate nitrogen/Total nitrogenDuring the testing processAutomatic cleaning function;

Surgical parameters:

■Ammonia nitrogen (nitrite nitrogen) project:

■Precision requirements:

configuration0.1mg/LAmmonia nitrogen solution, measured continuously three times,RSD< 1%;

■Linear requirement:

The concentration can be automatically or manually configured as follows:0.0 、0.05 、0.10 、0.20 、0.40、 0.80 、1.0 、2.0mg/LAmmonia nitrogen standard solution, relatedSex coefficientr≥0.9995；

■Requirements for removal of nitrite in ammonia nitrogen:

Configure the concentration as0.4mg/LAmmonia nitrogen and0.6mg/LnitriteA mixed solution of nitrogen, capable of Accurately measure the results in one go;

■ Detection limit requirements:

Compliant with environmental standardsHJ195-2005The prescribed ammonia nitrogen detection limitFormula calculation, detection limit <0.02mg/L；

Compliant with environmental standardsHJ197-2005The prescribed limit for detecting nitrous oxideFormula calculation, detection limit <0.003mg/L)；

■ Automatic dilution function verification:

Configure the concentration as2.0 mg/LAmmonia nitrogen mother liquor, automatically diluted by the instrumentThe concentration of ammonia nitrogen is 0.04 、0.10 、0.20 、0.40 、0.80 、1.0 、2.0mg/LAutomatic drawing of standard curves System, correlation coefficientr≥0.9995

■Sensitivity requirements:

Based on the concentration value of ammonia nitrogenmg/LOn the horizontal axis, the absorbance value is on the vertical axis, and the scale bar is not displayed When measuring in peak height mode, the slope of the curve is plottedKprice≥0.13； ■to configure:

12.1 Host standard set, including flow injection sampling systemUnified, automatic water removal system, online

Heating system, cathode lamp light source systemTCSSystems, etc1 SetCCDdetector1Set. 12.2 Electronic pressure alarm system1 Set;

12.3 Integrated module for online digestion and dilution of total nitrogen1 Set; 12.4 Built in ammonia nitrogen online oxidation system1 Set;

12.5 Fully enclosed system of reaction separator1 Set, upgraded software system1 Set; 12.6 One year consumables accessories (100 sample tubes, Pump pipe9root）；

12.7Notebook computer1 platform