石墨炉,原子吸收

The CAAM-2001k model, with three lamp positions and a graphite furnace, is a precision analytical instrument independently developed by our company for the single graphite furnace atomic absorption method Professors Wu Tingzhao and Chen Lianyuan, who developed this instrument, have been working in the atomic absorption field in China for many years and have experience in developing various models. They have combined their years of experience into this instrument and in the atomic absorption spectroscopy field.

1.Detection methods and theoretically measurable trace elements of the atomic absorption spectrometer: (for reference only)

Graphite Furnace Atomic Absorption Method:

Elements detected by graphite furnace atomic absorption spectroscopy require only a small sample and have high sensitivity (ppb level). Silver (Ag), aluminum (Al), arsenic (As), gold (Au), barium (Ba), beryllium (Be), bismuth (Bi), calcium (Ca), cadmium (Cd), cerium (Ce), cobalt (Co), cesium (Cs), copper (Cu), dysprosium (Dy), erbium (Er), europium (Eu), iron (Fe), gallium (Ga), holmium (Ho), indium (In), potassium (K), lanthanum (La), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo), sodium (Na), nickel (Ni), platinum (Pt), osmium (Os), lead (Pb), palladium (Pd), praseodymium (Pr), hafnium (Hf), rubidium (Rb), rhodium (Rh), ruthenium (Ru), antimony (Sb), scandium (Sc), selenium (Se), samarium (Sm), tin (Sn), zirconium (Zr), tellurium (Te), titanium (Ti), vanadium (V), zinc (Zn), silicon (Si), and so on.

I. Application Scope of Atomic Absorption Spectrometer:

Atomic absorption spectrometers are widely used for testing and analysis in various industries, including hospitals, pharmaceuticals, steel, health and epidemic prevention, metal smelting, geology and mining, chemical industry, water quality monitoring, food and dairy, environmental monitoring, quality inspection, drug testing, agriculture, toys, electronics, and more.

1. Main technical specifications of atomic absorption spectrometers

1.1 Spectroscopy system

1.1.1 Grating marking: 1800 lines/mm.

1.1.2 Wavelength range: 190-900nm.

1.1.3 Spectral bandwidth: Five automatic adjustable levels: 0.1,0.2,0.4,1.0,2.0nm.

1.1.4 Wavelength length: ≤0.15nm, wavelength repeatability: ±0.05nm.

1.1.5 Baseline drift: Static ≤ 0.002A/30 minutes, Dynamic ≤ 0.004A/30 minutes.

1.1.6 Light Source: Three-lamp position automatic turret switching and automatic alignment.

1.1.7 High-Performance Power Supply: Built-in high-performance lamp dual cathode power supply is used to measure edge energy spectral interference and unstable elements such as arsenic, selenium, and mercury. High-performance dual cathode emission increases luminous intensity, extends lamp service life, and enhances instrument testing stability and sensitivity.

1.1.8 The instrument light source lamp frame turret uses dual synchronous wheel technology for control, with a lifting degree to ensure smooth and reliable operation of the lighthouse.

1.1.9 The instrument's external optical path uses a focused semi-transparent, semi-reflective device to combine the effective background light source with the main light path, improving the accuracy and stability of analysis data.

1.1.10 The monochromator uses worm gear transmission to control the splitting system, greatly improving the resolution accuracy of the optical path and significantly enhancing the wavelength accuracy of the element to be scanned during scanning

2.2 Graphite Furnace Atomizer

2.2.1 Characteristic Weight (Cd): 0.3×10-12g.

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

2.2.3 Precision: RSD≤2%.

2.2.4 Heating method: Stable longitudinal heating technology.

2.2.5 Safety Protection: Water flow, water temperature, air pressure, poor contact with graphite tubes, overcurrent, and power alarm protection.

2.2.6 Conversion method: Flame/graphite furnace automatic switching integrated machine, controlled by electronic mobile platform software, no manual disassembly required.

III. Main Features of the CAAM-2001 Series Atomic Absorption Spectrometer:

1. High Stability:

   The instrument's baseline stability is ≤0.002A/30min. Baseline stability is a fundamental indicator for evaluating an instrument, as it determines a series of operational conditions of the main unit, such as noise, sensitivity, and repeatability.

2. High Sensitivity:

   The atomic absorption spectrometers produced by our company can achieve sensitivity (1 μg/mL copper Cu absorbance ≥0.28 Abs).

3. High Power:

   The lamp current of the instrument is controlled at 3mA–5mA (other manufacturers 8mA–12mA), spectral bandwidth is 0.2nm, and a negative high voltage of 150V–350V is enough to reach full transmittance. This allows your hollow cathode lamp to be used more than half longer, greatly saving consumables and procurement costs.

4. USB Interface:

   This atomic absorption spectrometer is equipped with a USB interface, compatible with various computer models and office equipment, reflecting the instrument's foresight and compatibility.

5. Independently Developed Supporting Equipment and Consumables:

   Our company independently develops ancillary facilities and consumables related to atomic absorption spectrometers, such as hydride generators, high-performance hollow cathode lamps, and glass efficient nebulizers. The use of high-performance hollow cathode lamps offers advantages such as high emission intensity, high determination sensitivity, lower detection limits, better stability, and elimination of interference from nearby spectral lines. The development, production, and application of glass efficient nebulizers improve the sensitivity, detection limits, and stability of atomic absorption measurements to a certain extent. The flow injection hydride generator used in atomic absorption spectrometers is easy to operate, offers high determination efficiency, and can partially replace atomic fluorescence photometers.

6. User-Friendly Data Processing Software:

   Combining domestic and international data processing results with practical experience in the Chinese atomic absorption spectroscopy field, it provides highly reliable data processing outcomes. The software is designed for fast and easy operation with strong functionality.

7. Integrated Graphite Furnace System with Main Unit:

   The graphite furnace system automatically switches with the flame atomizer (H-type), making the transition from system switching to sample measurement very simple and fast, greatly saving analysis time. An automatic sampler is optionally available.

Ⅳ.Which Industries Using the Instruments and the Elements They Test for:

1. Hospitals: Mainly measure the content of elements like copper, iron, calcium, magnesium, zinc, selenium, lead, arsenic, cadmium, sodium in blood, urine, hair, etc.

2. Pharmaceutical Companies: Mainly measure the content of lead, cadmium, arsenic, mercury, copper, calcium, magnesium, zinc, etc., in medicines.

3. Metallurgy Industry: Measure cobalt, manganese, vanadium, iron, calcium, magnesium, nickel, sodium in ferroalloys. Measure aluminum, iron, manganese, lead, tin, antimony, silicon, nickel, tin, zinc in copper ingots.

4. Measure lead, arsenic, mercury, copper, iron, calcium, magnesium, cadmium, etc., in food.

5. Measure arsenic, cadmium, chromium, mercury, lead, antimony, selenium, barium, etc., in toys.

6. Measure boron, iron, manganese, copper, zinc, lead, arsenic, mercury, etc., in soil.

7. Measure harmful elements like lead, chromium, cadmium, mercury, barium, etc., in home appliances and electronic materials.

8. Measure the ion content of potassium, sodium, magnesium, aluminum, iron, zinc, copper, lead, manganese, etc., in ion polymers.

9. Measure metal ions like copper, zinc, lead, cadmium, hexavalent chromium, total chromium, calcium, magnesium, potassium, sodium, nickel, manganese, etc., in water.