终点
发表于 2025-3-26 21:13:28
Physical Properties of Water,at about 4 °C; this results in ice floating and the potential for thermal stratification of natural water bodies. The physical properties of water are of intrinsic interest, but some of these properties influence water quality as will be seen in other chapters.
nettle
发表于 2025-3-27 02:52:17
Physical Properties of Water,at about 4 °C; this results in ice floating and the potential for thermal stratification of natural water bodies. The physical properties of water are of intrinsic interest, but some of these properties influence water quality as will be seen in other chapters.
上下连贯
发表于 2025-3-27 07:58:22
Physical Properties of Water,e water molecule is dipolar—there are negatively and positively charged sites on opposite sides of the molecule. As a result, water molecules form hydrogen bonds with other water molecules. Hydrogen bonds are stronger than van der Waals attractions that occur among molecules, and impart unique physi
ANNUL
发表于 2025-3-27 10:27:44
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华而不实
发表于 2025-3-27 17:09:40
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BOAST
发表于 2025-3-27 19:53:31
Dissolved Solids,, and reporting the weight of the solids remaining after evaporation in milligrams per liter. The TDS concentrations in natural freshwaters typically range from about 20–1,000 mg/L; the solids consist mainly of bicarbonate (and carbonate at pH above 8.3), chloride, sulfate, calcium, magnesium, potas
PALL
发表于 2025-3-27 23:46:42
Particulate Matter, Color, Turbidity, and Light,ginate from erosion on watersheds and within water bodies, vegetative debris from watersheds, and microorganisms produced in water bodies. Suspended particles vary from tiny colloids (1–100 mμ) that remain suspended indefinitely in still water to larger silt and sand particles held in suspension by
Obedient
发表于 2025-3-28 05:55:54
Dissolved Oxygen and Other Gases,nity of the water. Dissolved oxygen is used to illustrate the principles of gas solubility. Concentrations of dissolved oxygen at saturation decrease with greater elevation (lower barometric pressure), higher salinity, and rising temperature. The concentration of dissolved oxygen in water may be exp
TEN
发表于 2025-3-28 07:53:25
Redox Potential,s—in which one substance, the oxidizing agent, accepts electrons from another substance, the reducing agent. The oxidizing agent is reduced and the reducing agent is oxidized. The flow of electrons between two half-cells can be measured as an electromotive force (in volts). The hydrogen half-cell (H
CHIDE
发表于 2025-3-28 12:21:44
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