Silicate manifold

Figure 10. The blank signals obtained in seawater of various salinities in the silicate analysis (14). Key top, automatic refractive index matching using the manifold shown in Figure 7 and bottom, the refractive index of the injected reagent was adjusted with sulfuric acid to 7nitiimize the blank sigfial when 34 ppt of seawater was analyzed. Automatic refractive index matching...

Some results on using HA in marine chemical investigations are reported. The new modifications of reversed flow-injection manifolds for the determination of dissolved silicate, phosphate, sulfate, sulfide, and manganese(II) in seawater samples and normal flow-injection methods for the determination of total alkalinity, sulfate, and main nutrient-type constituents in interstitial water samples are described. The use of the proposed procedures for obtaining the concentration profiles of some important species in seawater and in interstitial water of marine sediments is shovm. The advantages of FIA techniques for determining the chemical data in a chemical laboratory are demonstrated. 

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