Difference between revisions of "Chlorinity"

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<div class="definition"><div class="short_definition">(Symbol Cl.) A measure of the chloride content, by mass, of [[seawater]] (grams per kilogram  of seawater, or [[per mille]]).</div><br/> <div class="paragraph">Originally chlorinity was defined as the weight of chlorine in grams per kilogram of seawater  after the bromides and iodides had been replaced by chlorides. To make the definition independent  of atomic weights, chlorinity is now defined as 0.3285233 times the weight of silver equivalent to  all the halides. The chlorinity of seawater is generally determined in order to permit the calculation  of [[salinity]], although other methods of determining salinity can be used. By using [[normal water]]  as a comparison [[standard]], Knudsen burettes and pipettes for the analysis, and Knudsen's tables  to compute the results, determinations as accurate as those of a time-consuming gravimetric analysis  can be made with a rapid titration of the seawater against silver [[nitrate]] solution, employing  potassium chromate or other suitable indicator for the end point. It is customary to express chemical  analyses of seawater in terms of chlorinity or of [[chlorosity]].</div><br/> </div>
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<div class="definition"><div class="short_definition">(Symbol Cl.) A measure of the chloride content, by mass, of [[seawater]] (grams per kilogram  of seawater, or [[per mille]]).</div><br/> <div class="paragraph">Originally chlorinity was defined as the weight of chlorine in grams per kilogram of seawater  after the bromides and iodides had been replaced by chlorides. To make the definition independent  of atomic weights, chlorinity is now defined as 0.3285233 times the weight of silver equivalent to  all the halides. The chlorinity of seawater is generally determined in order to permit the calculation  of [[salinity]], although other methods of determining salinity can be used. By using [[normal  water|normal water]]  as a comparison [[standard]], Knudsen burettes and pipettes for the analysis, and Knudsen's tables  to compute the results, determinations as accurate as those of a time-consuming gravimetric analysis  can be made with a rapid titration of the seawater against silver [[nitrate]] solution, employing  potassium chromate or other suitable indicator for the end point. It is customary to express chemical  analyses of seawater in terms of chlorinity or of [[chlorosity]].</div><br/> </div>
 
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Latest revision as of 16:35, 25 April 2012



chlorinity

(Symbol Cl.) A measure of the chloride content, by mass, of seawater (grams per kilogram of seawater, or per mille).

Originally chlorinity was defined as the weight of chlorine in grams per kilogram of seawater after the bromides and iodides had been replaced by chlorides. To make the definition independent of atomic weights, chlorinity is now defined as 0.3285233 times the weight of silver equivalent to all the halides. The chlorinity of seawater is generally determined in order to permit the calculation of salinity, although other methods of determining salinity can be used. By using normal water as a comparison standard, Knudsen burettes and pipettes for the analysis, and Knudsen's tables to compute the results, determinations as accurate as those of a time-consuming gravimetric analysis can be made with a rapid titration of the seawater against silver nitrate solution, employing potassium chromate or other suitable indicator for the end point. It is customary to express chemical analyses of seawater in terms of chlorinity or of chlorosity.


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