A new surfactant heavy crude oil sulfonates (HCOS) was synthesized from Daqing Heidimiao oil with fumingsulfuricacid.
以大庆黑帝庙稠油为原料，发烟硫酸为磺化剂，合成了稠油磺酸盐。
2
The sample is dissolved in nitric and fluoric-hydro acid adding sulfuricacid, and heating up to fuming, then the matrix element titanium is separated with sodium hydroxide.
试样用硝酸—氢氟酸溶解，硫酸冒烟后强碱分离钛、铁、镍离子，其余干扰离子用酒石酸钾钠掩蔽。
3
The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuricacid of fumingsulfuricacid sulfonation process.