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在分析测定工作中,如何提高方法的选择性是经常遇到的重要问题。在长期的分析实践中,为了消除复杂物料分析中的干扰现象,人们总结应用了许多掩蔽和解蔽的方法。所谓“掩蔽”,即是通过加入某种试剂与干扰杂质作用,把干扰杂质转变为不干扰测定的状态,从而使测定能够顺利进行。相反,使被掩蔽的物质从其掩蔽形式中解放出来,并恢复其参与某一反应的能力则称为“解蔽”。运用掩蔽和解蔽的手段可以不经过分离干扰元素而消除干扰作用,既可简化分析步骤,又能提高分析方法的选择性和准确度,符合多快
In the analysis of determination, how to improve the selectivity of the method is a frequently encountered important problem. In the long-term analytical practice, many methods of masking and unmasking have been summarized in order to eliminate disturbances in complex material analysis. The so-called “masking”, that is, by adding a reagent and interfere with the role of impurities, the interference of impurities into non-interference with the determination of the state, so that the measurement can be carried out smoothly. Conversely, liberating masked material from its masking form and restoring its ability to participate in a reaction is called “unmasking.” The use of masking and unmasking means can eliminate interference effects without separation and interference elements, which can simplify the analysis steps, but also improve the selectivity and accuracy of analytical methods, in line with how fast