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Bromine is a commonly used reagent in chemistry, because of its volatile and unstable characteristics, so the determination of its content has become the center of research. In traditional chemical analysis,[more]

The minimum detection mass of this method is 0.1μg. If 250mL water sample is distilled for determination, the minimum detection mass concentration is 0.002 mg/L.[more]

Under acidic conditions, Fe3+ and Al3+ in the solution react with the test iron reagent to form different metal complexes.[more]

Deepen the understanding of oil pollution in the environment, master the analysis method and technology of oil, and learn to use ultraviolet spectrophotometer.[more]

Objective: To establish a method for the determination of geniposide in Qinghuozhi cereal by ultraviolet spectrophotometry (UV), and to evaluate the uncertainty of the result.[more]

Wallpaper, also known as wallpaper, is a kind of interior decoration materials used for pasting walls, widely used in residential, office interior decoration and so on. Wallpaper products may produce harmful substances such as vinyl chloride, formaldehyde[more]

Theory：The tobacco sample was extracted with water, and the total plant alkaloids in the extract, measured as nicotine, reacted with p-aminobenzene sulfonic acid and cyanogen chloride, which is produced by an online reaction of potassium thiocyanate and s[more]

The quality of water directly affects people's health condition. Water quality monitoring has become an important part of our environmental protection.[more]

The chloride ion (Cl) in the sample all replaced the thiocyanate group (SCN -) in mercury thiocyanate, and the replaced thiocyanate group (SCNT) reacted with ferric nitrate to produce iron thiocyanate, which showed red color.[more]

Inductively coupled plasma mass spectrometry, known as "ICP-MS technique", can identify multiple elements in samples at the same time.[more]

This method is suitable for the determination of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium ox[more]

The existence of some trace metal elements in crude oil has adverse effects on petroleum processing, storage and transportation process and environmental protection.[more]

According to SH/T 0749-2004 lubricating oil and additives content determination method of added elements(Inductively coupled plasma emission spectrometry)，determination of metal element content in lubricating oil：[more]

Various limited metal components in food are determined under different spectral analysis with actual samples, in order to achieve the goal of comprehensive application of atomic absorption spectrometry.[more]

Introduction: Ethylene glycol, also known as glycol. Chemical formula: HOCH2—CH2OH. A simple binary alcohol. It is colorless, odorless, with sweet liquid, which can be mixed with water in any proportion. It is used for solvent, antifreeze and synthetic po[more]

Introduced oligonucleotides, single-stranded, double-stranded DNA, as well as RNA can be quantitatively dissolved in the buffer，The purine and pyrimidine bases that constitute nucleic acids have conjugate double bonds,[more]

The ICP light source generated in the ICP spectrometer torch tube has three observation methods: radial observation，axial observation and DUO observation . Let's have an analysis about it.[more]

The ICP6810 full-spectrum direct-read inductance-coupled plasma emission spectrometer, with excellent resolution, test accuracy and precision, is widely used in the rare earth industry, chemical industry, andOre analysis, metal smelting, geological resear[more]

Preface:The general classification of zinc oxide: the general industrial grade of zinc oxide is mainly divided into three kinds (pharmaceutical grade temporarily not mentioned) indirect method of zinc oxide (content 99.5-99.7),[more]

The problem of heavy metal pollution in water is becoming more and more serious. Scientific and accurate analysis of heavy metals in water has become an essential task of environmental monitoring.[more]