AJ-3000 Gas-Phase Molecular Absorption Spectrometer for Water Analysis

Position: Home > > Analytical instruments > Spectroscopy Equipment > Gas-phase molecular absorption spectrometer > AJ-3000 Gas-Phase Molecular Absorption Spectrometer

AJ-3000 Gas-Phase Molecular Absorption Spectrometer

Product ID：FGqxfz001

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberAJ - 3000

Brand NameSHANJIE

Payment TermsTT，PAYPAL，Alibaba.com Pay

AJ-3000 Gas-Phase Molecular Absorption Spectrometer

Product Introduction
The AJ-3000 Gas-Phase Molecular Absorption Spectrometer is designed for water quality analysis and the determination of nitrogen and sulfide compounds. Supported measurement parameters include ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, Kjeldahl nitrogen, total nitrogen, and sulfide.
Featuring automated oxidation, integrated carrier-gas purification, online heating, sample homogenization, and condensate removal, the AJ-3000 streamlines sample preparation and measurement. Its spectroscopic detection system uses a deuterium lamp, while dedicated software supports peak-height and peak-area quantification. Real-time graphical monitoring helps operators observe the measurement process and identify potential interference.

Performance Features
• Automated Ammonia Nitrogen Oxidation: Converts ammonia nitrogen to nitrite automatically without manually adding an oxidizing agent during the integrated oxidation process.
• Integrated Carrier-Gas Purification: Uses purified ambient-pressure air, reducing reliance on high-pressure nitrogen cylinders and associated gas-cylinder infrastructure.
• Online Heating: Provides controlled reaction-liquid heating during nitrate nitrogen and total nitrogen analysis.
• Sample Homogenization and Purging: Improves sample representativeness when analyzing turbid samples or samples containing suspended precipitates.
• Integrated Condensate Removal: Removes water vapor without disposable desiccants, helping reduce consumable costs.
• High-Efficiency Gas-Liquid Separation: Uses a sintered-glass gas-liquid separation reaction vessel to improve gasification efficiency and analytical sensitivity. The manufacturer states a sensitivity improvement of 300%.
• Real-Time Graphical Monitoring: Displays the measurement process graphically to help identify abnormal signals and potential interference.
• Flexible Quantification: Supports peak-height and peak-area methods to suit different analytical requirements.
• Broad-Wavelength Light Source: Uses a deuterium lamp covering the specified measurement wavelengths for supported analytical methods, reducing the need for lamp changes.
• Automatic Optical Gain: Provides automatic light-energy gain and adjustable lamp current to optimize signal acquisition and help extend lamp service life.

Working Principle
The AJ-3000 uses gas-phase molecular absorption spectroscopy to determine target compounds in water. During analysis, the sample undergoes appropriate chemical reactions that convert the target analyte into a measurable gaseous molecular species. The gas is separated from the liquid phase and introduced into the optical measurement system.
The deuterium lamp provides ultraviolet light, and the instrument measures the absorption of characteristic wavelengths by the generated gaseous species. The software processes the absorption signal and calculates the analyte concentration using an appropriate calibration method. Peak-height or peak-area quantification can be selected according to the analytical procedure.

Technical Parameters

Parameter	Specification
Model	AJ-3000
Instrument Type	Gas-Phase Molecular Absorption Spectrometer
Ammonia Nitrogen (NH₃-N)	Supported
Nitrate Nitrogen (NO₃-N)	Supported
Nitrite Nitrogen (NO₂-N)	Supported
Kjeldahl Nitrogen	Supported
Total Nitrogen	Supported
Sulfide	Supported
Light Source	Deuterium lamp
Carrier Gas	Purified ambient-pressure air
Gas-Liquid Separation	High-efficiency sintered-glass reaction vessel
Sample Processing	Automated oxidation, online heating, homogenization and purging
Moisture Removal	Integrated cooling and condensate removal
Quantification Methods	Peak height and peak area
Signal Monitoring	Real-time graphical monitoring
Optical Adjustment	Automatic light-energy gain; adjustable lamp current
Sensitivity Improvement	Manufacturer-stated improvement of 300%

Note: Numerical specifications for detection limits, measurement ranges, repeatability, accuracy, wavelength range, sample throughput, and power consumption were not provided. The manufacturer's stated 300% sensitivity improvement should be verified against its specified comparison baseline and test conditions.

Application Scenarios
• Environmental Monitoring: Analysis of nitrogen compounds and sulfide in surface water, groundwater, and other environmental water samples.
• Hydrology and Water Resources: Water quality assessment for hydrological monitoring programs.
• Municipal Drainage Monitoring: Testing nitrogen and sulfide indicators in drainage and wastewater samples.
• Petrochemical Environmental Monitoring: Water analysis associated with petrochemical production and environmental management.
• Third-Party Testing Laboratories: Routine water quality testing and analytical reporting.
• Industrial Wastewater Laboratories: Monitoring relevant nitrogen and sulfide parameters in industrial water samples.

AJ-3000 vs. Conventional Water Analysis Workflows

Comparison Item	AJ-3000 Gas-Phase Molecular Absorption Spectrometer	Conventional Laboratory Workflows
Target Parameters	Multiple nitrogen species and sulfide	Often requires different methods or configurations
Carrier Gas	Purified ambient-pressure air	May require external gas supplies, depending on method
Ammonia Nitrogen Oxidation	Integrated automated oxidation	May require manual preparation
Sample Heating	Integrated online heating	May require separate heating equipment
Sample Homogenization	Integrated homogenization and purging	May require separate sample preparation
Moisture Removal	Integrated cooling and condensate removal	May require separate drying materials or devices
Signal Evaluation	Graphical monitoring during measurement	Depends on instrument and software
Quantification	Peak-height and peak-area methods	Depends on analytical method

Frequently Asked Questions
1. What does the AJ-3000 Gas-Phase Molecular Absorption Spectrometer measure?
It supports the determination of ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, Kjeldahl nitrogen, total nitrogen, and sulfide in water samples.
2. What is gas-phase molecular absorption spectroscopy?
It is an analytical technique that converts target compounds into measurable gaseous molecular species and determines their concentration by measuring light absorption at characteristic wavelengths.
3. Does the AJ-3000 require high-pressure nitrogen cylinders?
Its integrated carrier-gas system uses purified ambient-pressure air, reducing the need for high-pressure nitrogen cylinders for the supported analytical procedures.
4. How does the instrument handle ammonia nitrogen oxidation?
The integrated oxidation system automatically converts ammonia nitrogen to nitrite without requiring manual addition of an oxidizing agent during that process.
5. Can the AJ-3000 analyze turbid water samples?
The built-in homogenization and purging system is designed to improve sample representativeness when samples contain suspended particles or precipitates. Appropriate sample preparation may still be required for specific methods.
6. How does the AJ-3000 remove moisture?
It uses an integrated cooling and condensate-removal system rather than relying on disposable desiccants.
7. Which quantification methods are available?
The software supports peak-height and peak-area quantification, allowing users to select the method appropriate to the analytical procedure.
8. What are the main application industries?
Applications include environmental monitoring, hydrology, municipal drainage, petrochemical environmental testing, industrial wastewater analysis, and third-party water quality laboratories.

Frequently Asked Questions
1. What does the AJ-3000 Gas-Phase Molecular Absorption Spectrometer measure?
It supports the determination of ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, Kjeldahl nitrogen, total nitrogen, and sulfide in water samples.
2. What is gas-phase molecular absorption spectroscopy?
It is an analytical technique that converts target compounds into measurable gaseous molecular species and determines their concentration by measuring light absorption at characteristic wavelengths.
3. Does the AJ-3000 require high-pressure nitrogen cylinders?
Its integrated carrier-gas system uses purified ambient-pressure air, reducing the need for high-pressure nitrogen cylinders for the supported analytical procedures.
4. How does the instrument handle ammonia nitrogen oxidation?
The integrated oxidation system automatically converts ammonia nitrogen to nitrite without requiring manual addition of an oxidizing agent during that process.
5. Can the AJ-3000 analyze turbid water samples?
The built-in homogenization and purging system is designed to improve sample representativeness when samples contain suspended particles or precipitates. Appropriate sample preparation may still be required for specific methods.
6. How does the AJ-3000 remove moisture?
It uses an integrated cooling and condensate-removal system rather than relying on disposable desiccants.
7. Which quantification methods are available?
The software supports peak-height and peak-area quantification, allowing users to select the method appropriate to the analytical procedure.
8. What are the main application industries?
Applications include environmental monitoring, hydrology, municipal drainage, petrochemical environmental testing, industrial wastewater analysis, and third-party water quality laboratories.