Active Member
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[China]
Address: A-711, Haige International Building, Xuanwumen, Xicheng District, Beijing China
Contact name:Jane
Macylab Instruments Inc. |
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AA-1800H is a multifunctional atomic absorption spectrometer with two background correction methods, D lamp background elimination and self-absorption background deduction. It is a high precision analytical instrument integrates flame atomic absorption spectrometry (abbreviated as FAAS), and hydride generation atomic absorption spectrometry (abbreviated as HG-AAS), and graphite furnace atomic absorption spectrometry (abbreviated as GFAAS), and atomic emission spectrometry (abbreviated as AES). An auto-sampler is optional to equip with graphite furnace atomic absorption spectrometry. AA-1800H is widely used in geology, metallurgy, mining, petroleum, chemical industry, mechanical, agriculture, food industry, medicine, health, antiepidemic, environmental protection, and other industries. And it is an essential high precision analytical instrument for scientific research institutes, colleges and universities, and related enterprises.
AA-1800H can be used for analyzing metallic elements, amphoteric elements, and alkali elements. It’s a high precision analytical instrument with high performance and its determination range can be from ppb to ppt. Following are the features of AA-1800H:
It is developed by experienced professors and senior engineers who are engaged in analytical instrument industry of atomic absorption spectrometry for many years. The background correction with Deuterium hollow cathode lamp can eliminate the interference of molecular absorption in low content determination. The detection sensitivity is greatly improved, and the value is less than 0.015 μg/ml/1%.
The import known-how such as the advanced pneumatic component theory, and high performance hollow cathode lamp guarantees the hydride generation atomic absorption spectrometry performing a high detection sensitivity and low detection limit. For example, the detection sensitivity of Arsenic element is better than 0.08 ng/ml/1%. The instrument precision is also greatly improved.
The data processing system of AA-1800H is an application of new data processing achievement in the field of atomic absorption spectrometry. It provides reliable data processing result. Meanwhile, the special designed operation software system is advanced and convenient.
The atomic absorption spectrometry together with on-line enrichment by the pneumatic flow injection system designed by ourselves can determine some elements and obtain a high sensitivity, that means it is a partly substitution of graphite furnace atomic spectrometry for certain elements. Thus, it not only reduces the testing cost, but also improves the instrument utilization.
AA-1800H uses special designed double-loop power supply for the high performance hollow cathode lamp, which is convenient for lamp adjusting. It not only improves the lamp energy of some element, but also improves the detection sensitivity to several times. And the performance indexes of the instrument such as stability and detection sensitivity are greatly improved.
A unique micro-volume sampler with constant current pulse that designed based on the pneumatic component theory is optional to equip with flame atomic absorption spectrometry. The sample volume can be reduced to 0.1 ml, however, there is few influence on the detection sensitivity. And a relative standard deviation about of 1% can be obtained. Thus, it is very significant to medicine and health care industry.
Innovative atomic absorption detection system guarantees the instrument having an excellent stability. For a non-zeeman atomic absorption spectrometer, the detection precision of 0.0001A makes it to be unique.
The instrument is controlled by the USB port of computer, which is an advanced communication method. User can choose the computer as required, and that is also available for other laboratory use. However, to avoid viruses, please don’t use this computer for internet surfing.
The instrument specifications are described in the following table:
| Items | Specifications | |
| Monochromator: | ||
| Wavelength Rage: | 190 nm ~900 nm | |
| Wavelength Accuracy: | ≤0.15 nm | |
| Grating: | 1800 lines/mm | |
| Optical System: | C-T | |
| Blazed Wavelength: | 250 nm | |
| Focal Length: | 280 nm | |
| Reciprocal Linear Dispersion: | 2 nm/mm | |
| Bandwidth: | 1 mm / 0.2 mm / 0.05 mm, selectable | |
| Detection Sensitivity: | ||
| FAAS: | Cu: ≤0.05 μg/ml | |
| GFAAS: | Cd: ≤1 pg, Cu: ≤80 pg | |
| Detection Limit: | ||
| FAAS: | Cu: ≤0.008 μg/ml | |
| GFAAS: | ||
| Measurement Repeatability(RSD): | ||
| FAAS: | Cu: ≤1% | |
| GFAAS: | Cd: ≤5%, Cu: ≤4% | |
| Stability (Baseline Drift): | ≤ 0.005 A/30min | |
| Detection System: | ||
| Photomultiplier (MPT): | R928 / R955 | |
| Negative High Voltage: | 150 V ~ 800 V | |
| Gain: | ×1, ×2, ×4 | |
| Light Source: | ||
| Lamps: | HCL, HPHCL, Dz | |
| Lamp Position: | No. 1 ~ No. 4: HCL | |
| No. 5 , No. 6: HPHCL | ||
| Independent holder: Dz | ||
| Lamp Current: | HCL: 0.5 mA ~ 9.9 mA | |
HPHCL: 0.5 mA ~ 9.9 mA (main current), 0.5 mA ~ 9.9 mA (auxiliary current) | ||
| Dz: 0.5 mA ~ 19.9 mA | ||
| Flame atomization System: | ||
| Nebulizer: | Glass nebulizer with metal sheath designed by Mr. Wu | |
| Burner: | 100 mm Steel of Titanium alloy | |
| Flame Ignitor: | Electronic pulse ignition | |
| Gas Flow Path: | Dual-channel designed, automatic security device with fuel gas flameout system |
Items | Specifications | |
| Graphite furnace atomization System: | ||
| Temperature control range: | Room temperature ~ 3000℃ | |
| Programmed temperature control: | Up to 20 stages, ramp and step heating | |
| Drying stage: | Up to 8 stages, each 4 stages for ramp and step heating, each stage 0~99 s duration time | |
| Ashing stage: | Up to 8 stages, each 4 stages for ramp and step heating, each stage 0~99 s duration time | |
| Atomization stage: | Ramp and step heating, 0~20 s duration time | |
| Clear stage: | Ramp and step heating, 0~20 s duration time | |
| Heating mode: | High power heating, and optically controlled high power heating with the temperature range of 1500℃~3000℃, with graphite tube temperature self calibration function | |
| Temperature accuracy: | ≤1% | |
| Heating rate: | ≥2000 ℃/s | |
| Security arrangement: | Cooling water flow: ≤0.75 L/min (Cooling water supply: ≥0.75 L/min) | |
| Alarm, and automatically stop heating program when following situation occurs: argon pressure <0.3 MPa, or cooling water temperature ≥60℃ | ||
| Heating program is not allowed when bad contact of graphite tube occurs | ||
| Over current protection | ||
| With the graphite tube usage recording function to remind users to replace the graphite tube when it reaching its service life | ||
| Gas control: | Internal gas: 0~300 ml/min, with the internal of 20 ml/min | |
| External gas: 0, or 1.5 L/min (The external gas is supplied with certain flow of during the four heating stages of drying, ashing, atomization and clear, and there are three kinds of cooling times for chosen, 15 s, 30 s, 45 s. Besides, the external gas is shut off) | ||
| Graphite tube type: | Ordinary, pyrogenic and platform graphite tubes | |
| Graphite tube fixing: | Pneumatic switch controlled by computer, stable and safe, with good contact. | |
| Signal Processing: | ||
| Signal Output: | Total absorbance, net absorbance, background absorbance | |
| Calculation methods: | Average, peak height, peak area | |
| Readings: | Absorbance: 0.001~2.000, 0.0001~2.0000, Concentration:0.001~9999 | |
| Calibration methods: | 4 fitting methods, each curve up to 10 points | |
| Statistics: | SD, RSD, precision | |
| Background correction methods: | D lamp background elimination, self-absorption background deduction | |
| Dimensions: | ||
| Main Structure: | 988 mm× 412 mm× 440 mm (L×W×H) | |
| Power Supply of Graphite Furnace: | 430 mm× 412 mm× 400 mm(L×W×H) | |
| Auto-sampler: | 306 mm× 278 mm× 440 mm(L×W×H) |
