masking reagent

Mixing colour solution contains isopropyl alcohol, triethanolamine, masking reagent and Br-PADAP.

载流溶液为异丙醇，混合显色剂组分为异丙醇、三乙醇胺、Br－PADAP和掩蔽剂。

Computer treatment of acidity conditions of reactions between organic agent and metallic ion when masking reagent is present

具掩蔽剂存在金属离子与有机试剂反应适宜酸度条件的计算机处理

After adding some masking agents, the reagent is applied to determinate Pb(ⅱ) in water standard samples.

在一定掩蔽剂的作用下，试剂可用于测定环境水质标准样品中铅的测定。

Nm, with ascorbic acid as a reducing reagent, thiourea as a masking reagent, iron, cobalt, copper and indium could be masked.

用抗坏血酸为还原剂，硫脲为掩蔽剂，可以掩蔽铁、钴、铜、铟。

The selectivity of the method may be increased by addition of thiocarbamide as masking reagent and pre-separation of the interferential elements using NH_3-NH_4Cl. This method is simple, rapid and accurate.

加入硫脲作掩蔽剂和用NH3-NH4CI预分离干扰元素可提高方法的选择性。

Mercury in crude gold has been determined directly without separation by AAS with potassium thiocyanate as the masking reagent for gold and SnCl_2as reductant to reduce mercury into the vapour atomic mercury in NaOH medium.

以硫氰酸甲作金的掩蔽剂，用SnCl2在强碱介质中还原化合汞为原子汞进行汞的冷原子吸收测定。

A method for the determination of arsenic, antimony and bismuth in high purity zinc by hydride generation-atomic fluorescence spectrometry ( HG-AFS) with thiourea-ascorbic acid-hydroxylamine hydrochloride as masking and reducing reagent has been proposed.

提出了以硫脲-抗坏血酸-盐酸羟胺作为混合还原掩蔽剂，氢化物发生-原子荧光光谱法（HG-AFS）测定高纯锌中砷、锑、铋的方法。