A branch of chemistry that studies the techniques and theories for analyzing substances. Due to its nature, analytical chemistry is not only important as the most basic and fundamental branch of chemistry, but also plays an important role not only in chemistry but also in biology, medicine, pharmacology, and all other fields. Depending on the substance being analyzed, it can be called inorganic analysis, organic analysis, etc., and depending on the method, it can also be divided into chemical analysis and physical analysis. Depending on the purpose of the analysis, it can be divided into qualitative analysis, which identifies the components of a substance, and quantitative analysis, which determines the quantitative ratio of the components. Quantitative analysis can also be divided into gravimetric analysis, which measures weight directly using a balance or other instrument, volumetric analysis by titration, and instrumental analysis, which uses various analytical equipment. [Nakahara Katsunori] [Reference] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
物質を分析する技術や理論などを研究する化学の一分野。分析化学はその性質上、化学のもっとも基礎的、基本的学問分野として重要であるばかりでなく、化学のみならず、生物、医学、薬学その他あらゆる分野にわたって重要な役割を果たしている。対象とする物質によって無機分析、有機分析などとよぶことがあり、その手法から、化学分析と物理分析のように分ける場合もある。また分析する目的によって、物質の成分を同定する定性分析と、構成成分の量的割合を決定する定量分析とに分けられる。さらに定量分析も、天秤(てんびん)その他で直接重量を測定する重量分析や、滴定による容量分析、あるいは各種の分析機器を用いて分析を行う機器分析などに分けられている。 [中原勝儼] [参照項目] |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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