ZA4000 Series atomic absorption spectrophotometers, new fast continuous mode (supports flame method), achieving higher analysis efficiency, can beWe have achieved rapid, high precision and high reproducibility in many fields such as research and quality management.

Features

High-precision and efficient detection through rapid continuous measurement

Continuous measurement of up to 12 elements can be carried out to achieve high efficiency detection

ZA4000 The series is equipped with the polarization Zeeman calibration method specially developed by Hitachi and dual detectors to provide stable and high-precision analysis.
Among the new members, the fast serial flame machine ZA4800 Using the newly developed diffraction grating drive, the multi-element rapid continuous testing is achieved, and the detection efficiency is improved by 30%, breaking the AAS Determination speed is not as good as ICP technical difficulties.

Polarization Zeeman Background Correction

High-precision background correction for full wavelength range, suitable for any element, can correct sodium and potassium, etc. D2 Elements that cannot be corrected by the lamp correction method.

It can be tested by turning on the computer, and the baseline is more stable.

Dual detector real-time background correction

Using a separate detector to simultaneously capture the signal of the sample beam and the reference beam, which can reduce baseline noise.
The detection time of the two beams is synchronized, thereby improving the correction accuracy.

Flame method: automatic start, voice navigation

The polarization Zeeman correction method can effectively suppress drift, and the absorbance will return to about zero when the blank solution is inhaled. Therefore, the system will determine the start and end time of injection and measurement, and automatically perform the measurement. Notify when the sample needs to be replaced via voice prompt. Even customers who use atomic absorption spectrophotometers for the first time can operate with confidence.

Graphite furnace method

Ultra-trace analysis and diagnosis system

When ultra-trace analysis is performed using graphite furnace method, contamination of the graphite tube or sample injection system will lead to inaccurate analysis data. Through the "Graphite Tube Pollution Confirmation" function, beginners can also easily analyze and promptly detect instrument pollution, saving pre-inspection time.

Automatic detection function of boiling

It can improve the accuracy of the detection results. Automatically detects the blast boiling and will be marked after the value of the measurement result“ P”。 Based on this, it can be confirmed whether the boiling occurs and the heating procedure can be corrected in time.

Sample trays that can avoid misplacement

According to the set automatic sampler conditions, the display screen of the sample disk will display standard solutions, matrix modifiers, etc. in different colors according to the sample. The risk of misplaced samples can be reduced by distinguishing the sample tray.

Sample table loading function

Software can Excel To extract information such as "Sample Name", "Weight" and "Solvent Volume", just click "Load Sample Table". Suitable for users who need to manage table data separately.

Analysis example

Analysis of copper in nickel plating solution by flame method

Cu Absorption wavelength and Ni The absorption wavelength is very close, even when the analysis contains a large amount of Ni tiny amounts in the electroplating solution Cu， The polarization Zeeman calibration method can also perform high-precision measurement.

Confirm the volatility of elements to be tested during ashing

ZA4700 It is a special machine for graphite furnaces, which can provide background correction for all processes such as drying, ashing, atomization, removal and cooling of samples during the measurement process. It provides important information for the determination conditions for creating complex matrix samples.
Background monitoring of the drying and ashing stage can be performed using the polarization Zeeman correction method of permanent magnets.
In the determination of magnesium, when the ashing temperature increases, it can be seen that magnesium volatilizes during the ashing process (left picture).
When the ashing temperature decreases and the volatile signal disappears, a signal with good reproducibility can be obtained (Picture right ) 。

6Continuous determination of various elements

The following figure shows the use ZA4800 An example of 6 elements being measured continuously. Use composite lamps together, lit up 6 element lamps at the same time, and switch the wavelength of each sample for measurement. Using polarization Zeman's unique baseline stability and continuous measurement can greatly improve the analysis efficiency. In addition, the frequency of sample replacement can be reduced, thereby reducing the burden on the operator.

System lineup