河口化学是研究各种物质在河口区的河水和海水不断交汇过程中的通量、相互作用、物质变化及其过程的学科。
河口化学，河流化学，有机碳循环，海洋光化学。
Estuarine chemistry, River chemistry, Organic Carbon Cycle, Marine Photochemistry.
为了寻找黄河口河海划界的科学依据，对影响黄河口河海划界的各种水文、地质、生物、物理、化学等要素进行了丰、平、枯水期的现场测定和室内分析。
In order to find a scientific basis for the delimitation of the boundary line between sea and land in the Yellow River Estuary, the factors of hydrology, geology, biology, physics, chemistry, etc.
除少数河口区外，胶州湾绝大多数海域的石油烃、化学耗氧量和金属铬含量均满足渔业水质要求。
The contents of petroleum hydrocarbons, chemical oxygen demand and chrome all meet the fishery water quality standard for major water areas in this Bay except a few estuary areas.
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