Related Experiment Video
Updated: Jan 26, 2026

Author Spotlight: Deciphering the Long-Term Effects of Low-Level Blast Exposures in Mice
Published on: May 24, 2024
Highly sensitive determination of Cu(II) iron in ng/mL level in natural waters using Sulfochlorophenol S
1Department of Chemistry, Guangdong University of Education, Guangzhou, 510303, People's Republic of China.
Abstract:
The highly sensitive complexation of Cu(II) with Sulfochlorophenol S (SCPS) at pH 4.03 was characterized by the spectral correction technique. This reaction was used to determine the Cu(II) content in various sources by the light-absorption ratio variation approach (LARVA). The limit of detection of Cu(II) was only 1.35 ng/mL, thus facilitating the direct monitoring of natural water. The Cu(II) contents in the Huangpu River, Yangtze River, and Taihu Lake of China were determined with satisfactory results, and the recovery rates of Cu(II) using SCPS were between 94.5 and 102.6 %.
Related Concept Videos
Nature and Nurture
What is Natural Selection?
High-Level and Low-Level Awareness
States of Water
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
Leveling Effect
The Wave Nature of Light

