相关实验视频

Updated: Jul 11, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
10:11

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

大气中的氧气:同位素组成和可溶性分化

P Kroopnick, H Craig

    Science (New York, N.Y.)
    |January 7, 1972
    PubMed
    概括

    大气中的氧气显示,与海洋水相比,氧气-18的丰富度为每毫升23.5. 在海水中溶解的氧气在0°C时进一步缩为0.85每毫升,具有取决于温度的可溶性.

    更多相关视频

    Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx07:14

    Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

    Published on: December 20, 2016

    Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System08:35

    Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

    Published on: December 16, 2019

    相关概念视频

    Gas Solubility01:31

    Gas Solubility

    Gas solubility in liquids forms liquid-gas solutions, such as soft drinks, where carbon dioxide is dissolved in water, and the ocean, where the solubility of oxygen and carbon dioxide supports marine life. The ability of oceans to dissolve gases impacts weather conditions in the troposphere.However, gas-liquid interactions vary. For instance, hydrogen chloride gas is highly soluble in water, while oxygen's solubility is much lower. Because these solutions are non-ideal, Raoult’s law, which...
    Physical Properties Affecting Solubility02:19

    Physical Properties Affecting Solubility

    Solutions of Gases in Liquids
    As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
    Oxygen Transport in the Blood01:27

    Oxygen Transport in the Blood

    Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
    Oxygenic Photosynthesis01:26

    Oxygenic Photosynthesis

    Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate light...
    Oxygen Requirements and Growth Patterns01:29

    Oxygen Requirements and Growth Patterns

    Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
    Solubility Equilibria: Overview01:09

    Solubility Equilibria: Overview

    When a substance such as sodium chloride is added to water, it dissolves, forming an aqueous solution. The extent of dissolution is called solubility. The process of dissolution can exist in equilibrium, just like other chemical processes. Solubility equilibria are also called precipitation equilibria because the process of solubility can be reversible. The reverse of the solubility process is called precipitation.
    Solubility is important in biological and environmental processes. A notable...