SP-3882ZAA Zeeman Atomic Absorption Spectrophotometer Introduction
SP-3882ZAA is a toxic and heavy metal element in foods for lead and cadmium testing. Some of them come from the enrichment of heavy metals in crops, and the other from pollution in food production, processing, storage and transportation. Heavy metal elements can be bioconcentrated through the food chain, and the concentration is increased by 10 million times, which causes harm to the human body. Heavy metals entering the human body will show toxicity after a period of accumulation, which is often difficult to be perceived by people and has great potential harm.
Lead is a highly toxic one in heavy metal pollution, and it is difficult to eliminate it once it enters the human body. Lead has a toxic effect on various human systems, mainly in the nervous system, hematopoietic system and blood vessels. In the nervous system, advanced neurological dysfunction can occur in the early stage, organic brain disease and nerve paralysis can be caused in the late stage; in the hematopoietic system, lead mainly interferes with the synthesis of heme and causes anemia.
Cadmium is a non-essential and toxic element of the human body. The discharge rate of cadmium is very slow, and the biological half-life of human renal cortical cadmium is 10 to 30 years. Cadmium can cause irritation to the respiratory tract, and long-term exposure can cause olfactory loss, gingival macula or progressive yellowing. Cadmium compounds are not easily absorbed by the intestines, but can be absorbed by the body through breathing, and accumulated in the liver or kidneys, especially in the kidneys, which can cause osteoporosis and softening. Cadmium enters the body and can damage blood vessels, causing tissue ischemia and causing multiple system damage.
Therefore, the detection of lead and cadmium is of great significance in environmental monitoring, food safety, blood lead and cadmium detection.
Application areas: general instruments, food safety, environmental testing, medical and health.
Feature
Dual detector optical double beam, total reflection achromatic optical system;
The superior antigenicizer's light-radiating ability can effectively eliminate the background emission of the flame and the intense optical radiation of the graphite tube at high temperatures.
Intelligent stray light measurement and correction technology. It effectively improves the optical precision and linear range of the atomic absorption spectrometer and improves the background correction ability.
Optical noise reduction technology, combined with optical component UV enhancement technology, effectively improves the optical performance and linear range of the instrument.
The gap control lamp technology enables the ordinary domestic hollow cathode lamp to be used for self-priming background correction, and the service life of the hollow cathode lamp is extended by more than ten times, thereby reducing the use cost.
Mercury lamp-reagent" gradient measurement technology to improve the speed and performance of instrument detection.
Horizontal Zeeman magnetic field longitudinal heating graphite furnace
The light-emitting direction and the center of gravity parallel eight-light frame system are used to automatically change the light.
At the same time, it has three deduction backgrounds: xenon lamp, self-priming and Zeeman.
Zeeman type Ze atomic absorption flame graphite furnace tandem integrated machine does not need to be switched;
Technical Parameters
Wavelength range: 180nm-900nm automatic peak finding
Spectral bandwidth: 0.1nm, 0.2nm, 0.4nm, 0.7nm, 1.4nm, 2.0nm six-speed automatic switching
Burner: metal titanium burner assembly;
High-efficiency glass atomizer, which can be directly upgraded and disassembled to adjust the ceramic atomizing device;
Protective gas flow in graphite tube
Install automatic alarm and security protection;
Atomization heating method: light control temperature rise, time control temperature rise, general temperature rise;
The position of the graphite furnace is adjusted horizontally, vertically and in a full position. Concentration calculation method: standard curve method (a total of 6 linear, nonlinear fitting methods), standard addition method, internal standard method.
Repeat the number of measurements: 1-30 times, calculate the average, give the standard deviation and relative standard deviation.
Background correction:
Flame: Self-priming background correction: >80 times (1Abs);
Xenon background correction: >40 times (1Abs)
Introduction
SP-3882ZAA is a toxic and heavy metal element in foods for lead and cadmium testing. Some of them come from the enrichment of heavy metals in crops, and the other from pollution in food production, processing, storage and transportation. Heavy metal elements can be bioconcentrated through the food chain, and the concentration is increased by 10 million times, which causes harm to the human body. Heavy metals entering the human body will show toxicity after a period of accumulation, which is often difficult to be perceived by people and has great potential harm.
Lead is a highly toxic one in heavy metal pollution, and it is difficult to eliminate it once it enters the human body. Lead has a toxic effect on various human systems, mainly in the nervous system, hematopoietic system and blood vessels. In the nervous system, advanced neurological dysfunction can occur in the early stage, organic brain disease and nerve paralysis can be caused in the late stage; in the hematopoietic system, lead mainly interferes with the synthesis of heme and causes anemia.
Cadmium is a non-essential and toxic element of the human body. The discharge rate of cadmium is very slow, and the biological half-life of human renal cortical cadmium is 10 to 30 years. Cadmium can cause irritation to the respiratory tract, and long-term exposure can cause olfactory loss, gingival macula or progressive yellowing. Cadmium compounds are not easily absorbed by the intestines, but can be absorbed by the body through breathing, and accumulated in the liver or kidneys, especially in the kidneys, which can cause osteoporosis and softening. Cadmium enters the body and can damage blood vessels, causing tissue ischemia and causing multiple system damage.
Therefore, the detection of lead and cadmium is of great significance in environmental monitoring, food safety, blood lead and cadmium detection.
Application areas: general instruments, food safety, environmental testing, medical and health.
