A type of micro-qualitative analysis, this method detects substances contained in a sample by reacting a drop of sample solution with a drop of reagent solution. It is also called spot analysis. It is used as a preliminary test, simplified analysis, or rapid analysis. Usually, the reagent solution is placed on a drip plate made of porcelain or glass with many small indentations, or a drip paper (filter paper) soaked in the reagent solution is used to cause the reaction, and the reaction is confirmed mainly by the color that appears during the reaction. Therefore, the reaction must have high selectivity, specificity, and sensitivity. It has the characteristics of not requiring special equipment and being able to perform the analysis in a short time. [Takada Takeo] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
微量定性分析の一つで、試料溶液の一滴と試薬溶液一滴とを反応させて試料中に含まれる物質の検出をする方法。斑点分析(はんてんぶんせき)ともいう。予備試験もしくは簡略分析、迅速分析的に用いられている。普通、磁製またはガラス製の板に小さな凹(くぼ)みを多数つけた点滴板に試薬溶液を入れるか、または試薬溶液をあらかじめしみ込ませた点滴紙(濾紙(ろし))を用いて反応させ、おもにその際の呈色を利用して確認する。したがって、利用できる反応としては、高い選択性や特異性をもち、高感度であることが要求される。特殊な器具類が不要で、短時間で分析が行える特徴がある。 [高田健夫] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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