沈殿

• 読み: ちんでん
• ローマ字: chinden
• 漢字の分解: 沈 (chin/shizu-) — sink, submerge; 殿 (den/dono) — settling, palace (phonetic use here)
• 発音: /tɕi.ɴ.de.ɴ/

意味

Precipitation; sedimentation; the process by which a solid forms in a solution and settles to the bottom, or the solid deposit itself.

A noun (also suru-verb) used in chemistry and environmental science. Chemical precipitation occurs when a reaction produces an insoluble product; sedimentation refers to gravity-driven settling of suspended particles. 沈殿物 is the precipitate or sediment. In water treatment and analytical chemistry, controlling 沈殿 is essential.

例文

1. 硫酸バリウムの白い沈殿が生じたことで硫酸イオンの存在が確認できた。
2. 池の底に長年の沈殿が積み重なり、厚い泥の層を形成していた。
3. 遠心分離機を使って溶液中の細胞を沈殿させ、上清を除去した。

使い方ガイド

場面: chemistry, environmental science, water treatment, geology

トーン: neutral

起源と歴史

Compound of 沈 (chin — to sink) and 殿 (den — palace, but here used phonetically for 'settling'). In scientific usage the combination denotes material sinking and accumulating at the bottom.

文化的背景

時代: Modern

世代: Students and professionals

社会的背景: Technical