High throughput microwave digestion analyzer laboratory for food, soil, and drug testing

High throughput microwave digestion analyzer laboratory for food, soil, and drug testing

Product Introduction

The CYWB series high-throughput intelligent microwave digestion instrument refers to an instrument that uses microwave heating principle in a closed container to achieve sample pretreatment under high temperature and high pressure conditions. And it provides fast, safe, and automated solution instruments for samples, widely used in fields such as food, environmental protection, disease control, quality supervision, commodity inspection, and scientific research institutes.

Product features

Rapid digestion: Microwave digestion equipment can complete sample digestion in a short period of time, greatly improving work efficiency.
Wan QuanDigestion: Microwave digestion equipment can perform digestion on various complex samplesChe BottomDissolve, the digestion effect is good.
Environmental Protection: The microwave digestion instrument adopts a closed digestion method, reducing the discharge of harmful gases and waste liquids, which is beneficial for environmental protection.
Safety: The microwave digestion instrument is controlled by a microcomputer, easy to operate, and has multiple protection functions such as overheating and overvoltage to ensure experimental safety.
Wide applicability: Microwave digestion equipment can be used for sample pretreatment in multiple fields such as geology, environment, biology, and food.

Usage scenarios

Nitric acid (HNO ∝)
Characteristics: Strong oxidant, capable of oxidizing and eroding metals and organic substances, generating soluble nitrates, and dissolving most sulfides.
Application: Mainly used for organic samples (such as fats, beverages, proteins, pigments, polymers), metal oxides, soil, etc., often combined with hydrogen peroxide to enhance the digestion effect.
硫酸（H₂SO₄）
Characteristics: Efficient solvent that can destroy almost all organic compounds, accelerates digestion through dehydration and carbonization, but has a high boiling point (exceeding the temperature limit of most microwave digestion tanks).
Application: As an auxiliary acid, it is used for samples such as hydroxides, metals, and ores, and requires strict temperature monitoring.
（HF）
Characteristics: For silicon containing samples, convert silicates into silicon tetrafluoride (SiF ₄) gas separation, and combine with nitric acid to form insoluble elements such as titanium oxide, tungsten, niobium, zirconium, etc.
Application: Digestion of silicon containing matrix samples such as geology and ceramics.
aqua regia
Characteristics: Made by mixing 1 volume of nitric acid with 3 volumes of hydrochloric acid, it enhances oxidation by generating nitrosyl chloride (NOCl) and has a stronger solubility than a single acid.
Application: Digestion of insoluble samples such as precious metals (such as gold and platinum) and sulfide minerals
2、 Auxiliary reagents and combination therapy
Hydrogen peroxide (H ₂ O ₂): used as an oxidant in combination with nitric acid to accelerate the decomposition of organic samples and reduce the generation of nitrogen oxides. It is commonly used in food and biological samples.
Mixed acid system: based on sample characteristicsCombination reagents, such as nitric acid+HF”Used for geological samples, "nitric acid+hydrogen peroxide" is used for organic matter digestion, which can improve efficiency and reduce reagent consumption by 12.
3、 Precautions for reagent selection
Sample type adaptation: Organic samples are preferred to use nitric acid hydrogen peroxide system, while silicon containing samples need to be addedHFThe precious metal sample is made of aqua regia.
Safety control: Sulfuric acid requires strict temperature control,HFCorrosion resistant container is requiredInstruments (such as polytetrafluoroethylene tanks) should be protected from corrosion.
Instrument compatibility: Some reagents (such as high concentration sulfuric acid) have boiling points exceeding the tolerance temperature of the digestion tank, and the dosage needs to be adjusted according to the instrument parameters

High throughput microwave digestion analyzer laboratory for food, soil, and drug testing

Precautions

Safety precautions: When using a microwave digestion device, safety should be taken into consideration. At the same time, good ventilation should be maintained during the experiment to avoid inhaling harmful gases.
Sample processing precautions: During the sample processing, attention should be paid to the uniformity and representativeness of the sample. Avoid factors such as impurities or moisture in the sample that may affect the experimental results. At the same time, attention should be paid to accuracy when weighing samples to ensure the accuracy of experimental results.
Precautions for reagent use: When preparing reagents, attention should be paid to the quality and purity of the reagents. Avoid using expired or contaminated reagents. Meanwhile, when using reagents, attention should be paid to the dosage and concentration to avoid affecting the experimental results.
Precautions for operating specifications: When using a microwave digestion instrument, it is necessary to follow the operating specifications.
Precautions for instrument maintenance: When using a microwave digestion instrument, it is necessary to pay attention to the maintenance and upkeep of the instrument.