A chemiluminescent technique for the determination of nanomolar concentrations of nitrate and nitrite in seawater |
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| Authors: | C Garside |
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| Institution: | Bigelow Laboratory for Ocean Sciences, McKown Point, West Boothbay Harbor, ME 04575 U.S.A. |
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| Abstract: | A chemiluminescent analysis technique for the determination of nanomolar quantities of nitrate, nitrate plus nitrite or nitrite alone in seawater is described. The method depends on the selective reduction of these species to nitric oxide which is then determined by its chemiluminescent reaction with ozone, using a commercial nitrogen oxides analyzer. The necessary equipment is compact and sufficiently sturdy to allow shipboard use. A precision of ±2 nM is claimed with analytical rates of 10–12 samples h?1, and modifications are discussed to allow doubling the analytical rate. |
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