Three lamp holder single graphite furnace atomic absorption spectrophotometer

1、 Detection methods and detectable trace elements of atomic absorption spectrometer:
1. Atomic absorption flame method:
Atomic absorption 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), etc.
2. Atomic absorption hydride method:
Atomic absorption hydride generation method can be used for trace detection of low melting point elements (PPb level). Measurement: Arsenic (As), Selenium (Se), Antimony (Sb), Bismuth (Bi), Lead (Pb), Tin (Sn), Tellurium (Te), Germanium (Ge), Mercury (Hg), etc.
3. Atomic absorption graphite furnace method:
The element detected by atomic absorption 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), 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, Pb, Pd, Pr, Hf, Rb, Ph, Ru, Sb, Sc, Se, Sm, Sn, Zr, Te, Ti, V, Zn, Si, etc.


2、 Application scope of atomic absorption spectrometer:
Atomic absorption spectroscopy is widely used for analysis and testing in various industries such as hospitals, pharmaceuticals, steel, health and epidemic prevention, metal smelting industry, geology and mineral resources, chemical industry, water quality monitoring, food and dairy products, environmental monitoring, quality inspection, drug testing, agriculture, toys, electronics, etc.

1. Hospitals: Qiqihar Traditional Chinese Medicine Hospital, Anshan Traditional Chinese Medicine Hospital, Anshan Occupational Disease Prevention and Control Hospital, Hunchun Mining Bureau General Hospital, Hefei PLA 105 Hospital, Chaohu Second People's Hospital, etc. Mainly measure the content of copper, iron, calcium, magnesium, zinc, selenium, lead, arsenic, cadmium, sodium and other elements in blood, urine, hair, etc.
2. Pharmaceutical factories: such as Heilongjiang Songhua River Pharmaceutical Co., Ltd., Harbin Huarui Biochemical Pharmaceutical Co., Ltd., Hulin Zhenbao Island Pharmaceutical Co., Ltd., etc. Mainly measure the content of lead, cadmium, arsenic, mercury, copper, calcium, magnesium, zinc and other substances in drugs.
3. Smelting industry: For example, user Huludao Hongjing Molybdenum Industry: detects the content of cobalt, manganese, vanadium, iron, calcium, magnesium, nickel, sodium, etc. in molybdenum iron. Henan Luotong Group: determination of copper, iron, zinc, manganese, lead, nickel, silver, bismuth, indium, antimony. Dalian Wafangdian Hengda Nonferrous Metal Foundry: Determine the content of aluminum, iron, manganese, lead, earth, antimony, silicon, nickel, tin, zinc, etc. in copper ingots.
4. Measure the content of lead, arsenic, mercury, copper, iron, calcium, magnesium, cadmium, etc. in food.
5. Measure the content of arsenic, cadmium, chromium, mercury, lead, antimony, selenium, barium, etc. in toys.
6. Measure the content of boron, iron, manganese, copper, zinc, lead, arsenic, mercury, etc. in the soil.
7. Measure the content of harmful elements such as lead, chromium, cadmium, mercury, barium, etc. in household appliances and electronic materials.
8. Measure the ion content of potassium, sodium, magnesium, aluminum, iron, zinc, copper, lead, manganese, etc. in ionic polymers.
9. Determine metal ions such as copper, zinc, lead, cadmium, hexavalent chromium, total chromium, calcium, magnesium, potassium, sodium, nickel, manganese, etc. in water.


3、 Technical parameters
1. Working conditions
1.1 Power Requirements: 220V (+5%~-10%), 50/60 Hz; 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, 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 ≤ 0.005A/30 minutes.
2.1.6 Light source: 3 light positions, manually switched.
2.1.7 High performance power supply: Built in high-performance lamp dual cathode power supply.


2.2 Graphite Furnace Atomizer
2.2.1 Characteristic quantity (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: Vertical heating.
2.2.5 Safety protection: Water flow rate, water temperature, air pressure, poor contact of graphite tube, overcurrent and power alarm protection.
2.2.6 Heating and temperature control method: 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.


2.3 Background correction: Graphite furnace: Deuterium lamp+self-priming background correction: capable of correcting 1A background.


2.4 Data Processing
2.4.1 Measurement methods: graphite furnace method, hydride method.
2.4.2 Concentration calculation method: Standard curve method (1-3 degree curve), automatic fitting, standard addition method.
2.4.3 Repeat measurement times: 1-99 times, calculate the average, provide the standard deviation and relative standard deviation.
2.4.4 Result printing: Parameter printing, data result printing, graphic printing, can export WORD and EXCEL documents.
2.4.5 Full Chinese interface, easy and convenient to operate, can achieve automatic conversion between flame atomizer and graphite furnace atomizer through software operation.
2.4.6 Communication Interface: The computer communicates with the host via USB interface.