考察了显色剂用量、掩蔽剂用量及显色时间与吸光度的关系。
The relationship between the absorbency and the dosages of developer, and of the masking agent has been investigated.
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。
The selection of main reagents and screening agents has been introduced for measuring the calcium fluoride in fluorite by EDTA volumetric method.
为此，以双氧水、铜铁试剂为掩蔽剂和除杂剂，对该含钒酸浸液进行了除杂净化试验。
For this, hydrogen peroxide and cupferron were used as screening agent and agent for removing impurities in the test of purifying this vanadium-containing acid leaching solution.
对cod重铬酸钾回流法中的主要干扰离子，氯化物的消除，选择了用硫酸银代替硫酸汞做掩蔽剂。
To remove main disturbing ion, chlorine ion in the COD potassium dichromate reflux method, silver sulfate replaces mercury sulfate as a screening agent.
在沉淀体系中，当有掩蔽剂存在时沉淀剂的合理用量及被沉淀离子在溶液中最小残留量的计算是个复杂问题。
In the precipitate system with masking agents, the calculation of the rational amount of the precipitant and the smallest remainder of metal ions in the solution is a complicated matter.
实验结果表明：离子掩蔽剂法制备的铜银双金属粉末具备了优良的抗氧化性能，其主要影响因素为包覆量及摩尔比。
Experimental results show that after adding the ionic masking agent, effectively improve the copper powder antioxidant properties, and the main influence factors is the coated and mole ratio.
在文中还提出了用氟化铵，邻菲啰啉作为镍、钴、镁等离子的掩蔽剂，制定了不经分离快速测定空气中微量镉的新方法。
We have, moreover, proposed a new method TB determine cadmium in air, without separating Cd from its accompanying elements, with ammonium fluoride and phenanthroline as masking re...
在文中还提出了用氟化铵，邻菲啰啉作为镍、钴、镁等离子的掩蔽剂，制定了不经分离快速测定空气中微量镉的新方法。
We have, moreover, proposed a new method tb determine cadmium in air, without separating Cd from its accompanying elements, with ammonium fluoride and phenanthroline as masking reagents…
试样以王水分解、泡塑富集分离金，硫脲解脱，以硝酸-硫酸破坏硫脲，用氟化氢胺- EDTA掩蔽铁、铜、铅等干扰元素，加碘化钾使之析出碘，以淀粉为指示剂，用硫代硫酸钠进行滴定。
Conceal disturbing elements like iron, copper, lead with hydrogen fluoride amine-EDTA, add the potassium iodide to separate iodine, and take starch as indicator, titrate with sodium hyposulfite.
一种对失活的催化剂进行原位再生的方法，该方法能除去掩蔽催化剂位点的硫酸钙层。
An in-situ method for regenerating a deactivated catalyst can remove a calcium sulfate layer masking active catalyst sites.
一种对失活的催化剂进行原位再生的方法，该方法能除去掩蔽催化剂位点的硫酸钙层。
An in-situ method for regenerating a deactivated catalyst can remove a calcium sulfate layer masking active catalyst sites.
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