Introduction: Gas phase molecular absorption spectrometer is an instrument for water quality analysis by gas phase molecular absorption spectrometry. At present, ammonia nitrogen (HJ / T195-2005), Kjeldahl (HJ / T196-2005), nitrite nitrogen (HJ / T197- 2005), nitrate nitrogen (HJ / T198-2005), total nitrogen (HJ / T199-2005) and sulfide (HJ / T200-2005). Determination of mercury (HJ597 -2011) by cold atomic absorption spectrometry and sulfite, potassium permanganate index (CODMn), chloride, bromide, iodide, cyanide, sulfur dioxide, nitrogen dioxide and other indicators can be used literature methods Test. Gas-phase molecular absorption spectrometer is widely used in drinking water production, environmental monitoring, petrochemical, health and epidemic prevention, food industry, soil, chemical fertilizers, chemical reagents, paper, leather, printing and dyeing, industrial and mining enterprises, civil engineering, marine and fishery and hydrological monitoring Water quality analysis in various fields. This instrument is fully automated vapor phase molecular absorption spectrometer. Patented technology: long sample cell design, detection sensitivity and detection limit fold increase; dual beam energy compensation system, energy stability over a long period of time, lay the foundation for online; fiber optic technology, the element lamp positioning easier. Measurement items: ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, Kjeldahl, total nitrogen, sulfide and so on. Features: Automatic online heating module: all built-in, you can set the overheating temperature, to automatically stop heating Temperature control system: equipped with TCS temperature control system, temperature error ≤ 0.5 ℃ EPC electronic pressure control system: response time <1S Autosampler Number of samples and sample tube capacity: Sample size of not less than 45 and sample tube capacity of not less than 50ml; sample position can be randomly numbered, without the order. Removable sample tray for easy cleaning and replacement of the injector using a corrosion-resistant PTFE sample tube and stainless steel needle; Needle 4 to the rinse technology to ensure clean without dead ends, to ensure that the sample will not cross-contamination. Purge and homogenize the system: The sample is introduced into the gas before stirring, stirring to remove VOC and other interference, easy to stratify the sample homogenization. Use nitrogen as the stirring gas and avoid introducing other gases in the air into the sample. Automatic dosing device With the volume of liquid can be freely selected in the range of 50-1000mL; With automatic temperature compensation, can work in complex temperature environment; With perfusion and automatic cleaning function, so that the interference caused by the error is limited to a minimum; Easy to operate, one-click auto-complete configuration Friendly interface, digital screen at a glance; With a beep to indicate working status. UV online digestion module For automatic determination of total nitrogen when online digestion, a single water sample test time of about 5 minutes. Digestion ability, most of the organic matter can be completely digested, without high temperature and pressure, there is no security risk. The new catalytic technology to improve the hydrolysis efficiency of more than 50%, while the reagent automatically switches, greatly reducing reagent consumption, seamlessly compatible with GMA series of instruments. Built-in automatic dilution system: expand the scope of water samples, and can automatically configure the standard curve; samples can be diluted according to the specified times or automatically determine the dilution factor, the maximum dilution of not less than 40 times. Ammonia nitrogen determination Only one injection can be measured in the sample of ammonia nitrogen and nitrite nitrogen content. Software function The software can feedback control the various parts of the instrument, realize the automatic control function through the computer. Analysis of the graphics and data can be saved at the same time, and according to customer demand automatically expand the ruler, user-friendly grasp of the analysis of real-time status. The results of the report can be freely selected according to the needs of the format, and can be converted to Word or Excel format. Software compatible with Win XP, Win7 and other different operating systems. The use of window-specific Chinese software operating system, memory linear equations and curve fitting, curve regression, calibration curve, easy to use. Signal readouts have instantaneous integration, continuous, peak height and peak area values, readings are 4 and 5, accurate to 5, suitable for trace determination of the sample. When measuring precision, it automatically calculates the average, standard deviation, relative standard deviation. All operations by the computer, without human intervention (semi-automatic manual control to inject). Specifications: Instrument stability: (Zn hollow cathode lamp, wavelength 213.9nm); Baseline drift: ± 0.001Abs / 180min; Determination of the content range: quantitative determination to 0.02mg / L-1000mg / L; Analysis of project detection limit standard curve precision (6 determinations) Spike recovery Ammonia nitrogen 0.02mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Nitrate nitrogen 0.006mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Nitrite Nitrogen 0.003mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Kay nitrogen 0.02mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Total nitrogen 0.05mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Sulfide 0.005mg / L Correlation coefficient> 0.9995 RSD <2% 95-110% Mercury 0.001mg / L Correlation coefficient> 0.9995 RSD <2% 95-110%
Introduction: Gas phase molecular absorption spectrometer is an instrument for water quality analysis by gas phase molecular absorption spectrometry. At present, ammonia nitrogen (HJ / T195-2005), Kjeldahl (HJ / T196-2005), nitrite nitrogen (HJ / T197- 2005), nitrate nitrogen (HJ / T198-2005), total nitrogen (HJ / T199-2005) and sulfide (HJ / T200-2005). Determination of mercury (HJ597 -2011) by cold atomic absorption spectrometry and sulfite, potassium permanganate index (CODMn), chloride, bromide, iodide, cyanide, sulfur dioxide, nitrogen dioxide and other indicators can be used literature methods Test. Gas-phase molecular absorption spectrometer is widely used in drinking water production, environmental monitoring, petrochemical, health and epidemic prevention, food industry, soil, chemical fertilizers, chemical reagents, paper, leather, printing and dyeing, industrial and mining enterprises, civil engineering, marine and fishery and hydrological monitoring Water quality analysis in various fields. This instrument is fully automated vapor phase molecular absorption spectrometer. Patented technology: long sample cell design, detection sensitivity and detection limit fold increase; dual beam energy compensation system, energy stability over a long period of time, lay the foundation for online; fiber optic technology, the element lamp positioning easier. Measurement items: ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, Kjeldahl, total nitrogen, sulfide and so on.
