Journal ArticleDOI
A chemiluminescent technique for the determination of nanomolar concentrations of nitrate and nitrite in seawater
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In this paper, a chemiluminescent analysis technique for the determination of nanomolar quantities of nitrate, nitrate plus nitrite or nitrite alone in seawater is described.About:
This article is published in Marine Chemistry.The article was published on 1982-04-01. It has received 320 citations till now. The article focuses on the topics: Nitrate & Nitrite.read more
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The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean
David M. Karl,Ricardo M. Letelier,Luis M. Tupas,John E. Dore,James R. Christian,Dale V. Hebel +5 more
TL;DR: Seven years of time-series observations of biogeochemical processes in the subtropical North Pacific Ocean gyre have revealed dramatic changes in the microbial community structure and in the mechanisms of nutrient cycling in response to large-scale ocean–atmosphere interactions.
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Nanogram nitrite and nitrate determination in environmental and biological materials by vanadium (III) reduction with chemiluminescence detection.
TL;DR: The method has the advantage of not requiring highly acidic solutions for nitrate reduction and has been applied to the analysis of a variety of environmental waters, sediment, plant materials, and human urine and blood serum.
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Enzyme-independent formation of nitric oxide in biological tissues
TL;DR: It is reported that NO�’ can also be generated in the ischaemic heart by direct reduction of nitrite to NO˙ under the acidotic and highly reduced conditions that occur.
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Oceanic Primary Production: Estimation by Remote Sensing at Local and Regional Scales
TL;DR: An algorithm is proposed that combines a spectral and angular model of submarine light with a model of the spectral response of algal photosynthesis to apply at large horizontal scale and a dynamic biogeography is needed for the physiological rate parameters and the biological structure of the water column.
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The nitrogen isotope biogeochemistry of sinking particles from the margin of the Eastern North Pacific
Mark A. Altabet,Cynthia H. Pilskaln,Robert C. Thunell,Carol Pride,Daniel M. Sigman,Francisco P. Chavez,Roger Francois +6 more
TL;DR: The nitrogen isotopic composition of sediment trap samples, dissolved NO~, and surficial sediments was determined in three regions along the margin of the eastern North Pacific: Monterey Bay, San Pedro Basin, and the Gulf of California (Carmen and Guaymas Basins).
References
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Uptake of new and regenerated forms of nitrogen in primary productivity1
TL;DR: The role of zooplankton in regenerating nitrogen as ammonia in the Sargasso Sea is examined theoretically in this article, showing that only about 10% of the daily ammonia uptake by phytoplanton living in the upper 100 m.
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Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment
TL;DR: Removal of phosphate from detergents is not likely to slow the eutrophication of coastal marine waters, and its replacement with nitrogen-containing nitrilotriacetic acid may worsen the situation.