1) mercury sulphate
硫酸汞掩蔽剂
3) masking agent
掩蔽剂
1.
To find out a method which not only shorten time,save money and decrease pollution,but also satisfy requirements for setting out chemical oxygen demand(COD),the CODs were quickly determined by mercury-free potassium dichromate method using MnSO4 as catalyst and AgNO3,KCr(SO4)2·12H2O as masking agent of Cl-in sulfuric-phosphoric mixed acid.
12H2O作Cl-的掩蔽剂,采用重铬酸钾氧化法,无汞快速测定COD。
2.
In this method the masking agent is directly introduced into the determination to eliminate the interference of interfereing elements.
直接加入掩蔽剂消除铅测定中干扰元素对铅的干扰,用此方法对铅铋合金中的铅进行了准确的测定,取得了很好的准确度和重现性。
3.
The pH of both the beginning precipitation and the completion of precipitation,of the slightly soluble compounds,can be determined very conveniently through the logα M(L) -pH curve masking diagram under the conditions of the existence of masking agent.
本文提出的图解法 ,可极为简便地确定掩蔽剂存在时微溶物开始沉淀及沉淀完全时的ｐＨ值 ,比文献[1～ 3 ] 方法易于求解 ,计算简便。
4) demasking reagent
去掩蔽剂
5) masking reagent
掩蔽试剂
6) screening agent
掩蔽剂
1.
This article designs a new EDTA complex-formation method,which is to assay calcium carbonate content in coated abrasive tools unit area,through cupferron instead cyanide as screening agent,Satisfactory results can be obtatined.
以铜试剂代替氰化物作掩蔽剂 ,用EDTA容量法测定涂附磨具单位面积CaCO3 含量 ,获得了满意的效果。
补充资料：硫酸汞
分子式：HgSO4
CAS号：
性质：无色斜方结晶或白色粉末。密度6.47g/cm3。冷水中分解。溶于酸、食盐水，不溶于醇、丙酮、氨。潮解性。有毒!由稍过量的硫酸溶解氧化汞，然后将过剩酸排除制得。用作催化剂。也是制造氯化亚汞和氯化汞的原料。与氯化钠一起作为焙烧黄铁矿后渣中提取金、银的萃取剂。
CAS号：
性质：无色斜方结晶或白色粉末。密度6.47g/cm3。冷水中分解。溶于酸、食盐水，不溶于醇、丙酮、氨。潮解性。有毒!由稍过量的硫酸溶解氧化汞，然后将过剩酸排除制得。用作催化剂。也是制造氯化亚汞和氯化汞的原料。与氯化钠一起作为焙烧黄铁矿后渣中提取金、银的萃取剂。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条