Performance Introduction of CAAM-2001D Eight Lamp Single Flame Atomic Absorption Spectrometer:

The application of high-performance hollow cathode lamps has advantages such as high emission intensity, high measurement sensitivity, low detection limit, good stability, and disappearance of interference from adjacent spectral lines.

The invention, production, and application of high-efficiency glass atomizers have improved the sensitivity, detection limit, and stability of atomic absorption.

3. The application of flow injection hydride generator in atomic absorption spectrometer has achieved the sensitivity and detection limit of hydride atomic absorption method, and can partially replace atomic fluorescence spectrophotometer. Our products account for over 90% of the country's raw materials.

4. High precision transmission mechanism for atomic absorption spectrophotometer monochromator: (No. 2016205322788) This utility model relates to a high-precision transmission mechanism for atomic absorption spectrophotometer monochromator, comprising a worm gear cover and a worm wheel installed inside the worm gear cover, a worm gear cover and a worm gear installed inside the worm gear cover. The worm gear cover and the worm gear cover are installed on one side of the bottom plate, and the worm gear cover are connected to the worm gear cover. One end of the worm gear passes through the worm gear cover and is connected to the motor shaft through a coupling. A main shaft is coaxially fitted in the center hole of the worm wheel, and the output end of the main shaft passes out of the bottom plate and is connected to the monochromator. This utility model adopts the transmission mode of worm gear to control the monochromator, which improves the accuracy of the spectroscopic system.

Technical parameters of CAAM-2001D eight lamp single flame atomic absorption spectrometer:

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

Environmental temperature:+15 ℃ to+35 ℃.

Relative humidity: 20-80%.

Grating engraved lines: 1800 lines/mm.

Wavelength range: 190-900nm.

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

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

Baseline drift: Static ≤ 0.002A/30 minutes, dynamic ≤ 0.005A/30 minutes.

Light source: Automatically switch the turret and align according to the product light position.

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

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

Detection limit (Cu): 0.002 μ g/mL.

精密度： RSD≤0.5%。

Combustion head: Metal titanium combustion head.

Spray: High efficiency glass atomizer.

Atomization chamber: Explosion proof and polymer resistant atomization chamber.

Adjustment system: Fully automatic PC controlled flame/graphite furnace automatic switching, automatic optimization, and automatic ignition.

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

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

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

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

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

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

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

Precautions during the operation of CAAM-2001D eight lamp single flame atomic absorption spectrometer

1. During the use of instruments, it is important to pay attention to safety and avoid personal and equipment accidents. At the same time, strictly follow the operating procedures of the instrument.

2. Attention must be paid to checking the performance of the instrument during operation. Generally, instruments need to be preheated and stabilized. Before measuring samples, attention should be paid to checking the sensitivity and precision of the instrument. You can check whether the signal intensity of a certain standard solution and the relative standard deviation of multiple measurements meet the requirements. Although the sensitivity of the instrument fluctuates within a certain range, there is still a reasonable range of fluctuations, such as abnormal signal strength or measurement RSD, which should be carefully checked.

3. The determination of bulk samples should pay attention to the use of dilute acid or deionized water for cleaning between samples. Some high content samples should be diluted and retested, and sufficient cleaning time should be taken to avoid contaminating the next sample. The instrument should be inserted with some known concentration quality control samples for intermediate inspection after a certain period of time to check whether the measurement results are within a given result range. If the measurement result error is large, the working curve should be re made or the machine should be stopped for inspection according to the situation.

4. In case of backfire during flame analysis, the gas should be immediately turned off to prevent explosion and ensure the safety of personnel and property. Then restore the instrument switch and adjustment device to their original state before starting, and continue using it only after identifying the cause of tempering and taking corresponding measures.

5. When conducting graphite furnace analysis, if there is a sudden water outage, the main power should be quickly cut off to avoid burning out the graphite furnace. When the instrument is working, if there is a sudden power outage and flame analysis is being performed, the gas should be quickly turned off; If conducting graphite furnace analysis, quickly cut off the power supply of the main unit; Then restore the control mechanism of each part of the atomic absorption spectrophotometer to the shutdown state, wait for power to be turned on, and then restart according to the instrument's operating procedures.