在水浴加热条件下，用硫酸氢根将吸附在树脂上的铀酰离子和硝酸根离子置换到液相中，之后分别采用亚钛法、分光光度法进行测定。
Heated in water bath, uranyl ion and nitrate radical adsorbed on resin are replaced into solution by sodium bisulfate, then are determined by titanous method and spectrophotometry, respectively.
用红外与紫外光谱法、热分析和分子量测定研究了硬聚氯乙烯在硝酸和硫酸中的老化。
The ageing of rigid polyvinyl chloride (R-PVC) aggravated by nitric and sulfuric acids was studied by IR, UV Spectroscopy, thermo-analysis and molecular weight determination.
介绍了以磷矿为生产原料的硝酸法、盐酸法、硫酸法等湿法磷酸生产工艺，并对其工艺进行了说明和比较。
Some phosphoric acid production techniques are introduced, such as nitric acid technique, hydrochloric acid technique, sulfuric acid technique, which use phosphate rock as raw material.
我们还对传统的甲醛—硫酸法进行了改良，并将新的甲醛—硫酸法运用于硝酸尿素金属络合物中的酰氨态氮和总氮含量的测定中。
We also improved the conventional formol-H2SO4 titrimetric method, and applied it into the determinations of the contents of amide nitrogen and total nitrogen in urea nitrate metal complexes.
稀硫酸腐蚀性强，硫酸法—浓硝酸工艺采用98%H2SO4脱除硝酸中的水，产生了大量的稀硫酸须予以处理。
The use of 98% H2SO4 for removal of water in nitric acid in the sulphuric acid process concentrated nitric acid production will produce large amount of dilute sulphuric acid, which has to be treated.
稀硫酸腐蚀性强，硫酸法—浓硝酸工艺采用98%H2SO4脱除硝酸中的水，产生了大量的稀硫酸须予以处理。
The use of 98% H2SO4 for removal of water in nitric acid in the sulphuric acid process concentrated nitric acid production will produce large amount of dilute sulphuric acid, which has to be treated.
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