สิ่งแวดล้อม มลภาวะ ของเสีย
เอกสารมาตรฐาน
สหรัฐอเมริกา
APHA
SMWW 10750
Nematological Exarnination
2023
20
Standard methods for the examination of water and wastewater (543.3 APHA 24th ed. Ref. Treatises&monographs FL2)
Nematodes are unsegmented worms with elongated, cylindrical bodies; they are present worldwide in fresh, brackish, and salt waters, and in soil. A freshwater nematode has been defined as “any nematode species inhabiting either fresh water or non-brackish swampy soil below the water table; hence a species that will not drown in fresh water; a species fitted to utilize oxygen dissolved in fresh water.”...