Atomic absorption spectrometer

1、 Product Introduction:

CAAM-2024EAtomic absorption spectrometerIt is jointly developed by multiple industry experts in China and renowned professors from Tsinghua University. It mainly uses flame atomic absorption analysis method, and also has multiple functions such as flow injection hydride atomic absorption method and graphite furnace atomic absorption method. It is a physical and chemical analysis instrument with many functions and high cost-effectiveness. Professors Wu Tingzhao and Chen Lianyuan, who developed this instrument, are experts in the atomic absorption industry in China for many years and have experience in developing various types of instruments. They have combined their years of experience to improve the sensitivity of the instrument's element testing to a new level. The special technology enables the sensitivity of flame atomic absorption to reach a high level, that is, 1 μ g/ml/Cu absorbance ≥ 0.3 (sensitivity<0.015 μ g/ml/1% A).

Atomic absorption spectroscopy analysis technology is widely used in the analysis and testing of various industries such as food and beverage dairy products, biopharmaceuticals, metallurgical geology, health and epidemic prevention, petrochemicals, water quality monitoring, environmental monitoring, agriculture, forestry and animal husbandry, building materials, electronic and electrical materials, etc.

2、 Detection methods and detectable trace elements (for reference only):

The flame method (air acetylene) can detect elements up to PPM level.

Sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), platinum (Pt), gold (Au), copper (Cu), silver (Ag), zinc (Zn), cadmium (Cd), lead (Pb), bismuth (Bi), lithium (Li), etc.

The element detected by graphite furnace method has a small injection volume and high sensitivity (PPb level).

Silver (Ag), aluminum (Al), arsenic (As), gold (Au), barium (Ba), beryllium (Be), bismuth (Bi), calcium (Ca), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), gallium (Ga), indium (In), potassium (K), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo), sodium (Na), nickel (Ni), platinum (Pt), lead (Pb), palladium (Pd), antimony (Sb), selenium (Se), tin (Sn), tellurium (Te), titanium (Ti), alum (V) Zinc (Zn), silicon (Si), etc.

IIICAAM-2024EAtomic absorption spectrometerKey Features:

1. High performance lamp power supply: Equipped with high-performance dual cathode power supply, the instrument has a built-in high-performance element lamp (dual cathode element lamp) circuit to avoid unstable factors caused by the use of external current adapters.

2. When adjusting the combustion assistance ratio of the flame atomizer, the equipment's gas path box adopts a dual gas path control flow method, truly achieving flow control of gas and auxiliary gas. Due to the fact that many manufacturers only observe the flow rate of combustion assistance gas and rely solely on adjusting the gas flow rate, they cannot achieve true combustion assistance ratio regulation. Especially when making samples of organic components, the reliability of this aspect is highlighted. Some manufacturers can only reduce the output pressure of the auxiliary gas if they want to change the flow rate of the auxiliary gas, which brings a lot of unnecessary cumbersome processes to the operation.

3. The monochromator adopts a gap elimination screw sine mechanism for spectral separation, eliminating the phenomenon of backlash and return difference in the transmission mechanism, and achieving faster wavelength scanning speed.

4. Multiple slits are adopted, and special slits for high-temperature elements that can be used in the visible light region are specially added to avoid some elements that cannot be detected or the detection results are unreliable.

5. The control of the Element Lamp Lighthouse adopts dual synchronous wheel and dual synchronous belt technology to improve accuracy, ensure smooth, precise, and reliable operation.

6. Core key components:

1) Photomultiplier tube: Original Hamamatsu brand.

2) Grating: Developed by Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

7. The graphite furnace temperature control probe directly monitors the inner wall of the graphite tube, closer to the sample position, and the actual experimental temperature monitored is closer to the true value. When replacing the graphite tube in the furnace head, the fully automatic pneumatic opening and closing of the graphite furnace head has been truly achieved. The use of pneumatic transmission to open and close the graphite furnace head is to make the equipment transmission more stable, and also to avoid some manufacturers manually opening the furnace head to replace the graphite tube after the gas is cut off, which may affect the reliability of some element detection due to limb contact.

8. The integrated design of flame atomizer and graphite furnace atomizer adopts electronic mobile platform technology, and the dual atomizer is automatically reset through software.

9. Standard platform graphite tube, utilizing the radiation of graphite tube for heating, optimizing the waiting temperature zone for atomization, effectively improving analysis sensitivity and stability.

10. Our company can customize special coated graphite tubes according to individual high-temperature element determination needs of customers, to improve the stability and sensitivity of high-temperature element testing.

4、 Workstation Introduction

5、 Technical parameters

1. Working conditions

1.1 Power Requirements: 220V (+5%~-10%), 50/60Hz; 5000VA。

1.2 Environmental temperature:+15 ℃ to+35 ℃.

1.3 Relative humidity: 20-80%.

2. Technical indicators

2.1 Spectral system

2.1.1 Grating lines: 1800 lines/mm.

2.1.2 Wavelength range: 190-900nm.

2.1.3 Spectral bandwidth: automatically adjustable in five levels: 0.1, 0.2, 0.4, 1.0, and 2.0nm.

2.1.4 Wavelength accuracy: ± 0.15nm, wavelength repeatability: ≤ 0.05nm.

2.1.5 Baseline drift: Static ≤± 0.002A/30 minutes, dynamic ≤± 0.004A/30 minutes.

2.1.6 Light source: Six light positions, automatic switching of turret, secondary limit control technology, automatic collimation.

2.1.7 High performance power supply: Built in 2 high-performance lamp dual cathode power supplies.

2.2火焰原子化器

*2.2.1 Characteristic concentration (Cu): 0.015 μ g/mL/1%.

*2.2.2 Detection limit (Cu): 0.002 μ g/mL.

*2.2.3 Precision: RSD ≤ 0.5%.

2.2.4 Combustion head: Metal titanium combustion head.

2.2.5 spray: metal sheathed high-efficiency glass atomizer.

2.2.6 Atomization chamber: Explosion proof and corrosion-resistant polymer material atomization chamber.

2.2.7 Adjustment System: Fully automatic PC controlled six lamp turret, automatic alignment, automatic optimization, and automatic ignition.

2.2.8 Safety protection: It has automatic safety protection function, automatic gas path protection against backfire, acetylene leakage alarm, automatic shutdown system, and automatic power-off in case of abnormalities.

2.3 Graphite Furnace Atomizer

2.3.1 Characteristic quantity (Cd): 0.3 × 10-12g.

2.3.2 Detection limit (Cd): 0.2 × 10-12g.

*2.3.3 Precision: RSD ≤ 2%.

2.3.4 Heating method: Vertical heating.

2.3.5 Safety protection: Water flow rate, water temperature, air pressure, poor contact of graphite tube, overcurrent and power alarm protection.

*2.3.5 Conversion Method: Flame/Graphite Furnace Automatic Switching Integrated Machine, Controlled by Electronic Mobile Platform Software, No Manual Disassembly Required.

2.3.6 Heating and temperature control methods: Room temperature around -3000 ℃, fully automatic temperature control up to 20 levels, furnace enrichment and concentration up to 20 times, 4 heating methods, longitudinal light control monitoring of graphite tube inner wall temperature.

2.4 Background correction:

2.4.1 Flame: Deuterium lamp+self-priming background correction: capable of correcting 1A background.

2.4.2 Graphite furnace: deuterium lamp+self-priming background correction: capable of correcting 1A background.

2.5 Data Processing

*2.5.1 Measurement methods: flame method, graphite furnace method, hydride method.

2.5.2 Concentration calculation method: Standard curve method (1-3 degree curve), automatic fitting, standard addition method.

2.5.3 Repeat measurement times: 1-99 times, calculate the average, provide the standard deviation and relative standard deviation.

2.5.4 Result printing: Parameter printing, data result printing, graphic printing, can export WORD and EXCEL documents.

2.5.5 Full Chinese interface, easy and convenient to operate, can achieve automatic conversion between flame atomizer and graphite furnace atomizer through software operation.

*2.5.6 Communication Interface: The computer communicates with the host via USB interface.

6、 Parameters of graphite furnace automatic sampler (this equipment is an optional accessory and needs to be purchased separately)

1. Functional features:

·Automatic cleaning function: Automatically clean the sample tube before each injection to reduce sample residue.

·Three dimensional adjustment functions of horizontal, front and back, and high and low: achieve accurate positioning of the sample tube inside the graphite tube.

·The cleaning method is inner and outer wall cleaning, with no limit on the number of times it can be cleaned.

·Automatic dilution function: automatically dilute the sample.

·Mixed injection function: used to support automatic concentration function of the whole machine.

·Automatic addition of improvers: Up to 6 types of improvers can be added at a time.

·Oscillatory function: mainly used to shake the sample evenly.

·Intelligent adjustment of sampling and injection depth: The sampling and injection depth can be adjusted through software.

·Air column isolation function: Before sucking the sample, the software controls the suction of the air column for isolation, preventing contamination of the sample.

·Flexible programming functionality and the ability to save programming methods.

2. Specification parameters

Syringe volume: 100 μ L; Cleaning bottle capacity: 500mL;

Sample tray cup position: Graphite furnace 130 cup position, can hold:

10 standard sample cups (1.5mL), 120 sample cups (1.5mL), and any 6 improver cups (25mL) can be used

7、 Standard configuration list

Optional accessories: