fuming sulfuric acid

常见例句

Results:In the esterification step, fuming sulfuric acid was used;
結果：酯化時使用發菸硫酸；
The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuric acid of fuming sulfuric acid sulfonation process.
以廢聚苯乙烯（WPS）泡沫爲原料，採用濃硫酸和發菸硫酸兩種磺化方法制備性能良好的砼減水劑。
The sample is dissolved in nitric and fluoric-hydro acid adding sulfuric acid, and heating up to fuming, then the matrix element titanium is separated with sodium hydroxide.
試樣用硝酸—氫氟酸溶解，硫酸冒菸後強堿分離鈦、鉄、鎳離子，其餘乾擾離子用酒石酸鉀鈉掩蔽。