76 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



CONCLUSIONS 



Robinson and Thompson (1948) stated that de- 

 termination of the inorganic-phosphorus content 

 of sea water must be made as soon as possible after 

 collection of the samples. This is borne out by 

 the results of this study which give definite proof 

 that changes can take place within 30 minutes. 

 The data shown in table 5 demonstrate this. 



It is also clearly demonstrated that these same 



changes can be completely arrested for prolonged 

 periods by quick-freezing, and that this method of 

 stabilization has sufficient reliability for general 

 adoption. 



LITERATURE CITED 



Robinson, Rex J., and Thomas G. Thompson. 

 1948. The determination of phosphates in sea 

 water. Jour. Marine Research 7 : 33^41. 



o 



