That taka-diastase, when allowed to react under the appropriate conditions, will hydrolyze starch and maltose completely or almost completely to glucose has been known for some time (2, 9). It might, therefore, be expected that dextrins, which are intermediates in the hydrolytic breakdown of starch to maltose, should be similarly susceptible to taka-diastase. Results contrary to this expectatio...

A new method is described for determining in shales the amount of sulphides that dissolve in dilute hydrochloric acid. 1he samples are treated with hydrochloric acid under vacuum, and the hydrogen sulphide evolved is absorbed in potassium hydroxide and titrated with potassium _~'~ermanganate. The analytical results are expressed as FeS. INTRODUCTION During a study of the distribution of the sul...

a simple and rapid spectrophotometric method for the determination of nitrite in water and soil preparation samples has been developed. determination of nitrite is based on diazotization of p-nitro aniline with nitrite and subsequent coupling with 4-amino-3-hydroxynaphthalene-1-sulfonic acid in hydrochloric acid. the factors affecting the reaction i.e. concentration of p-nitro aniline, concentr...