HYGROSCOPIC PROPERTIES AND WATER-SOLUBLE FRACTION OF ATMOSPHERIC PARTICLES IN THE DIAMETER RANGE FROM 50 nm to 3.7 µm

2001 ◽  
Vol 32 ◽  
pp. 157-158
Author(s):  
K. KANDLER ◽  
J. BARTZ ◽  
B. BUSCH ◽  
J. HEYDER ◽  
E. KARG ◽  
...  
Keyword(s):  
Soluble Fraction ◽  
Atmospheric Particles ◽  
Water Soluble ◽  
Water Soluble Fraction ◽  
Hygroscopic Properties ◽  
Diameter Range

scholarly journals Water uptake by fresh Indonesian peat burning particles is limited by water-soluble organic matter

2017 ◽  
Vol 17 (18) ◽  
pp. 11591-11604 ◽  
Author(s):  
Jing Chen ◽  
Sri Hapsari Budisulistiorini ◽  
Masayuki Itoh ◽  
Wen-Chien Lee ◽  
Takuma Miyakawa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Uptake ◽  
Soluble Fraction ◽  
Water Soluble ◽  
Accurate Estimation ◽  
Soluble Organic Matter ◽  
Water Soluble Fraction ◽  
Hygroscopic Properties ◽  
Water Soluble Organic Carbon ◽  
Soluble Organic Carbon

Abstract. The relationship between hygroscopic properties and chemical characteristics of Indonesian biomass burning (BB) particles, which are dominantly generated from peatland fires, was investigated using a humidified tandem differential mobility analyzer. In addition to peat, acacia (a popular species at plantation) and fern (a pioneering species after disturbance by fire) were used for experiments. Fresh Indonesian peat burning particles are almost non-hygroscopic (mean hygroscopicity parameter, κ < 0.06) due to predominant contribution of water-insoluble organics. The range of κ spans from 0.02 to 0.04 (dry diameter = 100 nm, hereinafter) for Riau peat burning particles, while that for Central Kalimantan ranges from 0.05 to 0.06. Fern combustion particles are more hygroscopic (κ = 0. 08), whereas the acacia burning particles have a mediate κ value (0.04). These results suggest that κ is significantly dependent on biomass types. This variance in κ is partially determined by fractions of water-soluble organic carbon (WSOC), as demonstrated by a correlation analysis (R = 0.65). κ of water-soluble organic matter is also quantified, incorporating the 1-octanol–water partitioning method. κ values for the water extracts are high, especially for peat burning particles (A0 (a whole part of the water-soluble fraction): κ = 0.18, A1 (highly water-soluble fraction): κ = 0.30). This result stresses the importance of both the WSOC fraction and κ of the water-soluble fraction in determining the hygroscopicity of organic aerosol particles. Values of κ correlate positively (R = 0.89) with the fraction of m∕z 44 ion signal quantified using a mass spectrometric technique, demonstrating the importance of highly oxygenated organic compounds to the water uptake by Indonesian BB particles. These results provide an experimentally validated reference for hygroscopicity of organics-dominated particles, thus contributing to more accurate estimation of environmental and climatic impacts driven by Indonesian BB particles on both regional and global scales.

Impact of Rice Flour Cold-Water-Soluble Fraction Removal on Gelatinization and Pasting Properties

2014 ◽  
Vol 91 (5) ◽  
pp. 473-481 ◽  
Author(s):  
Guiai Jiao ◽  
Xiangjin Wei ◽  
Gaoneng Shao ◽  
Lihong Xie ◽  
Zhonghua Sheng ◽  
...  
Keyword(s):  
Cold Water ◽  
Soluble Fraction ◽  
Rice Flour ◽  
Pasting Properties ◽  
Water Soluble ◽  
Water Soluble Fraction

FRACTIONATION OF LIVETIN AND THE MOLECULAR WEIGHTS OF THE α- AND β-COMPONENTS

1957 ◽  
Vol 35 (4) ◽  
pp. 241-250 ◽  
Author(s):  
W. G. Martin ◽  
J. E. Vandegaer ◽  
W. H. Cook
Keyword(s):  
Light Scattering ◽  
Soluble Protein ◽  
Soluble Fraction ◽  
Egg Yolk ◽  
Water Soluble ◽  
Water Soluble Fraction ◽  
Molecular Weights ◽  
Water Soluble Protein ◽  
Hen Egg Yolk ◽  
Hen Egg

Livetin, the major water-soluble protein of hen egg yolk, was found to contain three major components having mobilities of −6.3, −3.8, and −2.1 cm.2 sec.−1 volt−1 at pH 8, µ 0.1, and these have been designated α-, β-, and γ-livetin respectively. The α- and β-livetins were separated and purified electrophoretically after removal of γ-livetin by precipitation from 37% saturated ammonium sulphate or 20% isopropanol. The α-, β-, and mixed livetins resembled pseudoglobulins in solubility but γ-livetin was unstable and this loss of solubility has, so far, prevented its characterization. Molecular weights determined by light scattering, osmotic pressure, and Archibald sedimentation procedure yielded respectively: 8.7, 7.8, and 6.7 × 104 for α-livetin, and 4.8, 5.0, and4.5 × 104 for β-livetin. Under suitable conditions of sedimentation and electrophoresis, egg yolk has been shown to contain three components having the same behavior as the three livetins of the water-soluble fraction.

Water-soluble fraction of mercury, arsenic and other potentially toxic elements in highly contaminated sediments and soils

Chemosphere ◽  
2010 ◽  
Vol 78 (11) ◽  
pp. 1301-1312 ◽  
Author(s):  
S.M. Rodrigues ◽  
B. Henriques ◽  
J. Coimbra ◽  
E. Ferreira da Silva ◽  
M.E. Pereira ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Soluble Fraction ◽  
Contaminated Sediments ◽  
Potentially Toxic Elements ◽  
Water Soluble ◽  
Water Soluble Fraction
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