Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.
This paper studied the new synthetic technology of taurin (2- aminoethanesulforic acid).It was synthe sized by the reaction of monoethanol amine sulfate with sodium sulfrous in yield of 85%.
This work applied the new type capillary column modified by barium sulfate. It has completed the solubilty of high boiling ester in para-methyl-toluate with the method of chromatography.
By replacing sulphoacid and silver sulfate solution by combining acid of sulphoacid and phosphoric acid in the back-flow process,the time is shortened and analysis is quicker.
S-Methyl-isothiourea sulfate was oxidized by hydrogen peroxide to give methylsulfonyl chloride in 70% yield in aqueous hydrochloric acid solution.The product was characterized by 1HNNR and IR.
The author outlines the type, characteristics of coagulant popularly used; especialy discusses the application conditions and extents of polyacrylamide, polyiron sulfate and poly alum.
In this paper,two methods for analyzing air sulphation rate were studied and compared.One was ion chromatography and the other was barium sulfate spectrophotometry.
The team added barium sulfate, often used to make photo paper, and calcium carbonate, something you'd find in rocks or shells, to make an even whiter, even more reflective, even cooler surface.
These molecules oxidize to form sulfates, which condense with water vapor in the air to form a blanket of fine particles that impair visibility and cause severe lung damage.
9 billion people are eligible to vote yes or no on a 10-year plan of aggressive solar radiation management, injecting sulfate particles into the atmosphere to block some of the Sun's rays.
The expanded shoreline means there are more places where water, warm and rich with the mineral sulfate, can rise to the surface from the springs below.
That solid sulfate mineral crust contrasts with thinner, weaker duricrusts observed by other Mars rovers, which may have formed through the actions of water vapor, according to the study.
Club soda is just water with a few add-ins: carbon dioxide for carbonation and “mineral-like” ingredients such as sodium bicarbonate, sodium citrate, and potassium sulfate.
club soda 只是添加了一些添加剂的水：于碳酸化的二氧化碳和“类似矿物”的成分，如碳酸氢钠、柠檬酸钠和硫酸钾。
But they're really just positively-charged cations — like calcium, sodium, and potassium — and negatively-charged anions, like phosphate, sulfate, and bicarbonate.
和丙酮
应,合成了新型高效的氧化剂二甲二氧环烷。
关键的中间原料。
有
重介绍了它们的用法。
了。
严重的情况下，可能需
静脉注射糖皮质
于制作相纸）和碳酸钙（你可以在岩石或贝壳中找到的东西），以制造更白、更反光、更凉爽的表面。
