A STUDY OF THE PHENOLSULFONIC ACID METHOD FOR THE DETERMINATION OF NITRATES IN WATER. [FOURTH PAPER.] A MODIFIED PHENOLSULFONIC ACID METHOD.

1911 ◽  
Vol 33 (3) ◽  
pp. 381-384 ◽  
Author(s):  
E. M. Chamot ◽  
D. S. Pratt ◽  
H. W. Redfield
Keyword(s):  
Acid Method

Comparison of several methods for semiquantitative determination of urinary protein.

1977 ◽  
Vol 23 (5) ◽  
pp. 876-879 ◽  
Author(s):  
W L Gyure
Keyword(s):  
Serum Albumin ◽  
Salt Concentration ◽  
Urine Samples ◽  
Urine Protein ◽  
Sulfosalicylic Acid ◽  
Green Method ◽  
Semiquantitative Determination ◽  
Acid Method ◽  
Bromcresol Green

Abstract Two types of urine protein dipsticks and the sulfosalicylic acid method were compared for their accuracy and specificity, with use of urine samples supplemented with various proteins. Dipsticks yield accurate results when the protein under consideration is restricted to albumin; the sulfosalicylic acid method accurately determines many kinds of proteins in addition to albumin. Detergents affect each of the methods, but changes in salt concentration only affect results by dipstick procedures. Dipsticks, which are based on the protein-error principle for indicators, are subject to some of the conditions that apply to the bromcresol green method for serum albumin determination.

scholarly journals The Determination of Propylene Glycol in the Tobacco Shred by Azeotropic Distillation-Periodic Acid Method

1966 ◽  
Vol 40 (11) ◽  
pp. 406-409
Author(s):  
Shiro SUGAWARA ◽  
Toshiko DOIHARA ◽  
Urako KOBASHI ◽  
Yoichi KABURAKI
Keyword(s):  
Propylene Glycol ◽  
Periodic Acid ◽  
Azeotropic Distillation ◽  
Acid Method

Pyrethrin I and II: Their estimation in pyrethrum (Chrysanthemum cinerariaefolium). II

1929 ◽  
Vol 19 (3) ◽  
pp. 433-437 ◽  
Author(s):  
F. Tattersfield ◽  
R. P. Hobson
Keyword(s):  
Rapid Method ◽  
Acid Method ◽  
Chrysanthemum Cinerariaefolium

1. The acid method previously described has been used to evaluate samples of pyrethrum derived from both Swiss and Japanese seed, with equally successful results.2. A rapid method for the evaluation of pyrethrum by a determination of pyrethrin I is described.

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