The Determination of Bound Water by Means of the Ultracentrifuge

1936 ◽  
Vol 58 (2) ◽  
pp. 315-317 ◽  
Author(s):  
James W. McBain
Keyword(s):  
Bound Water

Determination of Clay Bound Water in Shales from NMR Signals: The Fractal Theory

2021 ◽  
Author(s):  
Kouqi Liu ◽  
Zhijun Jin ◽  
Lianbo Zeng ◽  
Yujie Yuan ◽  
Mehdi Ostadhassan
Keyword(s):  
Fractal Theory ◽  
Bound Water ◽  
Nmr Signals

Determination of bound water content in polymers by DTA, DSC and TG

1988 ◽  
Vol 123 ◽  
pp. 153-161 ◽  
Author(s):  
Tatauko Hatakeyama ◽  
Kunio Nakamura ◽  
Hyoe Hatakeyama
Keyword(s):  
Water Content ◽  
Bound Water ◽  
Bound Water Content

EXTENT OF ICE FORMATION IN FROZEN TISSUES, AND A NEW METHOD FOR ITS MEASUREMENT

1955 ◽  
Vol 33 (6) ◽  
pp. 391-403 ◽  
Author(s):  
R. W. Salt
Keyword(s):  
Cold Hardiness ◽  
Bound Water ◽  
Fish Muscle ◽  
Theoretical Background ◽  
Ice Formation ◽  
Dehydration Melting ◽  
Salt Solutions ◽  
Melting Points ◽  
Insect Cold Hardiness

Use of the calorimetric and dilatometric methods for determination of ice in frozen tissues is criticized, and a method based on terminal melting points determined after various degrees of drying is proposed. The theoretical background of such a method lends support to it, and experimental work with gelatin is especially convincing. Use of the dehydration – melting point method on blood of Loxostege sticticalis gave results conforming in general to those obtained by other workers with calorimetric and dilatometric techniques, and also to those obtained with salt solutions. The amount of water that is bound is shown to be very low, as in mammalian, frog, and fish muscle. The possible influence of bound water in insect cold-hardiness is discussed and the conclusion is reached that it has little if any protective effect.

APPLICATION OF INVERSE PHASE GAS CHROMATOGRAPHY FOR DETERMINATION OF BOUND WATER IN COLLAGEN

1979 ◽  
Vol 44 (4) ◽  
pp. 1150-1151 ◽  
Author(s):  
U. COELHO ◽  
J. MILTZ ◽  
S. G. GILBERT
Keyword(s):  
Gas Chromatography ◽  
Bound Water

Dielectric Determination of Bound Water of Bone

1967 ◽  
Vol 12 (3) ◽  
pp. 367-378 ◽  
Author(s):  
Andrew A Marino ◽  
Robert O Becker ◽  
Charles H Bachman
Keyword(s):  
Bound Water

scholarly journals ВПЛИВ РОЗЧИННИХ РЕЧОВИН НА СТАН ВОДИ В РОСЛИННИХ ТКАНИНАХ ТА КІНЕТИКУ ЇХ СУШІННЯ

2018 ◽  
Vol 82 (1) ◽  
Author(s):  
Наталія В. Дмитренко
Keyword(s):  
Specific Heat ◽  
Bound Water ◽  
The State ◽  
Raw Material ◽  
Joint Analysis ◽  
Plant Tissues ◽  
Calorimetric Experiment ◽  
State Of Water ◽  
Heat Of Evaporation

В роботі наведено літературні дані щодо впливу розчинних речовин різного типу на процес та механізм зв’язування води. Порівняно результати визначення стану води у вихідній рослинній сировині, які були отримані з розрахунку за межею гігроскопічності, з результатами прямого експерименту за методом диференціальної сканувальної калориметрії. Встановлено, що додаткове зв’язування води, вище ніж отримане з розрахунку, обумовлено наявністю розчинних речовин в рослинному соку. Сумісним аналізом експериментальних кривих зміни стану води, енергограм сушіння, кривих сушіння та кривих швидкості сушіння показано, що критичні точки процесу сушіння знаходяться у відповідності з динамікою зміни стану води в рослинних тканинах та кінетикою зміни питомої теплоти її випаровування. Встановлено значне зростання енерговитрат на випаровування води вже в другому періоді сушіння. Отримані результати дозволяють стверджувати, що воно відбувається через початок видалення води з гідратних оболонок розчинених речовин. На підґрунті проведеного дослідження уточнено механізм і послідовність видалення води зі зрізів рослинних тканин при сушінні. The paper presents literary data on the influence of soluble substances of different types on the process and mechanism of water binding in aqueous solutions. Using the method of differential scanning calorimetry, the state of water in the parenchyma tissues of apples and potatoes, in the root crops carrots and beet, and the woody tissues of annual willow shoots was determined. A change in the state of water in these plant tissues during dehydration has been studied. The results of the determination of the state of water in the initial plant raw material obtained from the calorimetric experiment were compared with the results obtained from the calculation according to the hygroscopicity limit according to the assumptions of the sorption isotherms method. It has been established that the amount of bound water in the tissues of plants obtained from the calorimetric experiment is higher than the amount of bound water obtained on the calculation from the limit hygroscopicity of plant tissues. The additional binding of water is due to the presence of soluble substances in plant juice. Using the method of synchronous measurement of mass loss of tissues during drying and the amount of heat consumed for dehydration, an experimental determination of the specific heat of evaporation of water from plant tissues during drying was performed (the drying energy curves have obtained). Using joint analysis curves of change of the state of water in plant tissues, curves of drying energy, drying curves and drying rate curves, it was established that the critical points of the drying process are in accordance with the dynamics of changes in the state of water in plant tissues and the kinetics of the change in the specific heat of evaporation of water. A significant increase in energy consumption for the evaporation of water was detected already in the second drying period of plant tissues. The results obtained allow us to state that this increase in energy costs is due to the beginning of the removal of water from the hydrated shells of substances dissolved in plant juice. On the basis of the research, the mechanism and sequence of water removal from the cut of plant tissues during drying has been made more accurate.

Quantitative determination of the bound water in Bazhenov shales

2019 ◽  
pp. 34-44
Author(s):  
I. A. Rodkina ◽  
E. S. Kazak
Keyword(s):  
Capillary Condensation ◽  
Bound Water ◽  
Sorption Isotherms ◽  
Important Conclusion ◽  
Bazhenov Formation ◽  
Different Types ◽  
First Results ◽  
Mineral Compositions ◽  
Water Sorption Isotherms

The article presents the first results of determining the content of different types of bound water by hygrometric method — adsorption isotherm method — for non-extracted air-dry samples of Bazhenov formation rocks. The obtained water sorption isotherms for the studied samples have a well-expressed s-shape, which allows to determine the maximum possible amount of bound water of different types in them — mono-, poly — and capillary condensation and to draw an important conclusion about the hydrophilicity of the Bazhenov formation deposits. According to the form of sorption isotherms, the amount of bound water and the proximity of mineral compositions, nine samples were combined into 4 different groups, the remaining samples were considered individually. A correlation between the pore water content and the content of mono- and multilayer water was found.

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