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A rapid, highly sensitive technique for the determination of ammonia in seawater (1986)

Willason, S. W. ; Johnson, K. S.

Springer

Marine biology 91 (1986), S. 285-290

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ISSN: 1432-1793

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract A reliable and sensitive technique for the rapid determination of ammonia in seawater is described. The procedure is based on the conversion of NH 4 + in seawater to NH3 and the subsequent diffusion of NH3 across a hydrophobic membrane using flow-injection analysis. Sixty determinations can be made per hour on a flowing stream of seawater or discrete samples. The lower limit of detection is 0.05 μM. Results of two applications that demonstrate the potential of this technique are presented, a laboratory excretion experiment employing the crabPachygrapsus crassipes, and small-scale vertical mapping of ammonia in the ocean.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00569445

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