AFS-100 Dual Channel Atomic Fluorescence Spectrometer(Fully automatic/semi-automatic), using a dual peristaltic pump injection method, with a simple design structure, high sensitivity, low detection limit, wide applicability, and the ability to simultaneously determine multiple elements. It is capable of detecting easily formed hydrides. Heavy metal elements in gaseous components and atomic vapors.

1. Purpose

Teaching research, health and epidemic prevention, medical clinical testing, drug testing, food hygiene testing, urban water supply and drainage testing, agricultural product testing, beverage testing, environmental monitoring, cosmetics testing, metallurgical sample testing, geological survey testing, etc. Used for trace analysis of twelve elements including As, Sb, Bi, Hg, Se, Te, Sn, Ge, Pb, Zn, Cd, and Au in samples.

Model Description:

AFS-100 type, semi-automatic

AFS-100 fully automatic (equipped with a 200 position automatic sampler)

AFS-100 dual channel atomic fluorescence spectrophotometer (fully automatic/semi-automatic)

2. Technical indicators

2.1 Detection limit DL:

As、Se、Pb、Bi、Sb、Te、Sn ＜0.01μg/L

Hg、Cd ＜0.001μg/L

Ge ＜0.05μg/L

Zn ＜1.0μg/L

Or <3.0μg/L

2.2 Relative standard deviation RSD<1%

2.3 Linear range: greater than three orders of magnitude

2.4 Inter channel interference: ≤± 1%

2.5 Noise: ≤ 1%

2.6 Drift: ≤ 2%

3. Main technical features

3.1 This model features a dual channel design that allows for simultaneous measurement of two elements. Both channels come with enhanced functionality and can be upgraded to four channels according to different customer needs.

3.2 The element lamp is automatically recognized by an encoder, equipped with a file management and anti-counterfeiting recognition device for light source consumables. It adopts a high-frequency pulse power supply method, automatically triggers the ignition, and monitors the lamp current in real time.

3.3 The element lamp is designed with a sloping angle between 45 ° and 85 ° to reduce interference between light sources, and has the advantage of low background and high signal. Ordinary element lamps are plug and play.

3.4 Adopting a dual peristaltic pump injection system By separately controlling the injection and waste disposal, it is easier to achieve the required experimental conditions. The waste disposal speed can be set separately, greatly reducing the phenomenon of fluorescence sudden death caused by the effective fluorescence signal being carried away by the waste liquid and preventing a decrease in sensitivity. The two modes of intermittent injection and continuous injection can be automatically switched.

3.4.1 The dual peristaltic pump consists of ten rollers and two channels, each of which can be adjusted separately. The peristaltic pump injection system has the characteristic of fast sample measurement speed (less than 20 seconds for a single sample measurement), which shortens the detection time and improves work efficiency. Suitable for the detection of turbid and complex matrix samples.

3.4.2 The peristaltic pump tube adopts imported original packaging and does not undergo manual secondary processing. The service life of one original pump tube is more than twice that of conventional pump tubes.

3.5 Equipped with drift compensation function, automatically optimizing element lamp drift to ensure instrument stability; Continuous measurement of arsenic antimony standard solution for 4 hours, with drift not exceeding 2%. It is possible to set n samples per interval to retest the current carrying blank, with a fluorescence value deviation of no more than 10% from the initial current carrying blank. The mercury lamp is automatically activated and does not require the use of auxiliary tools to ignite after prolonged use.

3.6 Adopting the technique of eliminating inter channel interference, during the measurement process, the hollow cathode lamp is powered by a constant current pulse power supply and alternately lit to excite atomic fluorescence signals of different elements, achieving the goal of simultaneous measurement of multiple elements, eliminating the influence on the next channel signal, and ensuring the accuracy and reliability of each data.

3.7 Atomizer: Shielded low-temperature ignition quartz furnace atomizer with argon hydrogen flame observation window, capable of real-time monitoring of flame status.

3.8 Adopting a dual gas-liquid separation device:

The primary gas-liquid separator has the function of quickly removing foam to prevent the reaction solution from entering the atomizer; There is a check valve in the carrier gas path to prevent the reaction solution from entering the gas path;

Secondary gas-liquid separator: adopting a new device for removing water vapor, without the need for adding water or manual drainage;

It can achieve full pipeline cleaning, including primary gas-liquid separator, secondary gas-liquid separator, and hydride transmission pipeline, to avoid residual reaction system and pipeline crystallization. When using an automatic sampler, the cleaning process has an emptying function.

3.9 Gas system: capable of real-time display of gas flow rate and abnormal flow rate prompts, as well as safety protection for unloaded gas; After the test is completed, turn off the gas and enter the gas saving mode. The gas circuit will automatically open during sample preparation.

3.10 Detector: Photomultiplier tube, with a lifespan of over 10 years.

3.11 Optical System: Short focal length lens focusing, non dispersive closed optical system, and device for removing stray light.

3.12 The instrument has two detection modes, low sensitivity and high sensitivity, which are suitable for detecting samples of different concentrations.

3.13 Software System: After entering the software, the system automatically resets, the instrument functions self check, has memory function to automatically read the previous condition settings, has misoperation prompt function, carrier gas alarm function, automatic ignition function, can store measurement spectra in real time, injection system selection function, with one click measurement function, automatic sampler can set the probe depth of the injection needle, has batch printing function, can classify and print instrument conditions, sample information, standard samples, and unknown samples in batches. Chinese operating software suitable for any Windows system.

3.14 The software can set blank discrimination values, monitor blank cleaning, compare the reaction before and after sampling, and automatically determine whether the flow path is clean.

3.15 Equipped with capture trap devices capable of removing harmful gases from exhaust gas, reducing physical harm to operators and minimizing environmental pollution.

3.16 can be equipped with a 200 position 3D disc automatic sampler, which includes 200 10ml sample cups and 6 50ml large volume sample cups. The sample tray can also be used to place 10mL and 50mL stoppered colorimetric tubes, achieving the same container for sample processing and measurement, effectively avoiding secondary pollution caused by transfer.

Injection needle cleaning function: equipped with injection needle cleaning function, cleaning the inner/outer walls to reduce cross contamination, and with emptying function.

Coordinate method: Adopting an independent coordinate setting method instead of the traditional interval calculation method, each sample grade can be individually set with coordinates, greatly reducing the failure rate and improving analysis efficiency.

Positioning accuracy: ± 0.5mm,

Positioning repeatability: 0.3mm,

Sample retention:<0.1%.

3.17 The automatic sampler can be optionally upgraded with an integrated carbon fiber injection needle. The two ends of the injection needle adopt a locking structure, and the material in contact with the reagent is PTFE material, which has strong resistance to strong acids, bases, and organic solvents. The skeleton is made of improved carbon fiber material, which has certain strength and is easy to clamp and fix. This injection needle can avoid the risk of liquid leakage caused by secondary connection of the pipeline, as well as the problem of glass tubes being prone to breakage, breakage, and liquid hanging.

3.18 has an upgradable element morphology testing interface, which can be optionally upgraded to detect the valence states of elements such as arsenic (As), mercury (Hg), selenium (Se), antimony (Sb), etc. The total amount and morphology can be automatically switched.

After sales commitment:

Our company guarantees to strictly ship the goods according to the delivery deadline specified in the supply contract.

2. After the warranty period, our company adheres to the after-sales service principles of "giving one cent profit for one cent reputation" and "no profit service". Repairs will only be charged for the cost of parts (or 20% off the quoted price) and half price labor fees.

3. After installation and debugging, the user should fill out the maintenance and installation card in detail and return it to our company. Our company will archive the detailed information. If the instrument malfunctions, please contact our company in a timely manner. The company will respond within 24 hours after receiving the repair notice. Under normal circumstances, service personnel will arrive at the scene within 48 hours, and the latest response time should not exceed one week.

4. The instrument will be installed, debugged, and trained by our company for free at the user's location, and technical personnel will be provided to assist in providing analysis methods. Users can come to our company for technical learning at any time according to their needs. Training and learning are free, and accommodation and meals are provided by themselves.

Our company holds at least one user technical training course per year. Users can decide on their own when to attend the training based on the usage of the instrument. Regularly follow up with users every quarter to assist them in solving analysis problems encountered during use in a timely manner.

*If the user's spare parts are damaged, they can directly purchase from our company, and the company will send them by express delivery or send someone to deliver them.

1. Environmental monitoringThe product is used to analyze the metal element content in samples such as atmosphere, water, and soil. It can detect pollution sources and evaluate environmental quality, which is of great significance for environmental protection and ecological research.

2. Food safetyIt can be used to detect trace elements in food, such as lead, mercury, cadmium and other metal elements. This is of great significance for monitoring food safety, evaluating food quality, and controlling pollutants in food processing.

3. Geology and Mineral ResourcesIt can be used to quickly and accurately determine the metal element content in ore samples, including precious metals, rare earth elements, etc. This is of great significance for mineral resource assessment, deposit exploration, and ore processing.

4. Chemical analysisIt can be used for quantitative and qualitative analysis, with high accuracy and sensitivity for the determination of metal elements. It has important application value in chemical research, analytical testing, and quality control.

5. Materials ScienceIt can be used to analyze the content and distribution of metal elements in materials, which is of great significance for the study and improvement of material properties. Plays an important role in material preparation, quality inspection, and process control.

It should be noted that the specific application range of dual channel atomic fluorescence spectrometer may vary due to differences in manufacturers and models.