1·The selection of main reagents and screening agents has been introduced for measuring the calcium fluoride in fluorite by EDTA volumetric method.
介绍ED TA容量法测定萤石中氟化钙时所使用的主要试剂、掩蔽剂等的选择。
2·This paper discusses the effects of sample resting when precipitating agent is added on experiment results by using EDTA volumetric method for the determination of SO 2- 4 in water.
对EDTA容量法测定水中硫酸根时，对加入沉淀剂后样品静置时间对测定结果的影响进行了研究。
3·Objective:To dopt EDTA complexometry veraciously quickly measure barium sulfate purity and in contrast to barium chromate volumetric procedure.
前言： 目的：采用EDTA 配位滴定法准确快速测硫酸钡纯度并与常用的铬酸钡容量法进行对照。
4·Abstract It was commented on significant figures of mole mass of Zinc Oxide and relative atomic weight in calibrating for EDTA standard volumetric solution in GB/T 601–2002.
标准滴定溶液的标定是其浓度的量值溯源，GB／T 601–2002［1］通过规定工作基准试剂摩尔质量的有效数字，减少因数字修约而引入的不确定度。