Chromium(III) sulfate usually refers to the inorganic compounds with the formula Cr2(SO4)3.x(H2O), where x can range from 0 to 18. Additionally, ill-defined but commercially important "basic chromium sulfates" are known. These salts are usually either violet or green solids that are soluble in water. It is commonly used in tanning leather. Basic Chrome Sulphate,Basic Chrome Sulfate for Tannery,Tanning Agent Basic Chrome Sulfate HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com
Pesticide residue analysis is the use of pesticide residue detector and other instrument analysis methods for trace analysis of pesticide residues in food, usually including sample preparation and testing in two parts. Sample preparation is the core. In the aspect of sample preparation, the development trend of modern chromatographic sample preparation technology is to make the process of processing the sample simple, the processing speed is fast, the use device is small, the introduced error is small, the selectivity to the component to be measured and the recovery rate To be high.
The study of pesticide residue detector technology should be rational, scientific, and objective to the problem of pesticide residues in food, because the detection of pesticide residues is a very technical work, it involves assessment criteria, sampling points and sample size, pesticide species, and vegetable varieties. And analysis comes from many aspects, such as quality control directly affects the scientific and authenticity of the test results.
The scope of pesticide residues in the sample range of recovered pesticide species, the recovery rate is also higher in the application of pesticide residue detector technology, not only for oil purification effect, and good reproducibility, and analysis of the pillars can be reused, has become a universal Purified pesticide residue analysis method. In general, the purpose and result of the development of pretreatment technology is to achieve rapid, efficient and simple completion of sample preparation and automated analysis processes.
Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Products with higher basicities, e.g. 42% or 50% may be obtained by the addition of sodium carbonate, these are often used in combination with Sodium Formate. The sodium sulfate is often left in the technical product since it is inert with respect to the tanning process. It is important to fully reduce the hexavalent chromium to trivalent since the hexavalent is more likely to cause health problems for tanners and leather consumers.
The deepening of the research is evident in the problem of pesticide residues. The detection method of pesticide residue detectors is gradually perfect, and it is developing in the direction of simpler, faster, sensitive, residual, low cost, and easy promotion. Pesticide residue analysis is a comprehensive and highly analytical subject. With the continuous development of science and technology, today's analysis technology for pesticide residue detectors is constantly updated, and it is rapidly improved and developed.