ChemInform Abstract: A KINETIC STUDY OF THE SILVER/SILVER IODIDE FILM ELECTRODE IN AQUEOUS SOLUTION USING THE COULOSTATIC PULSE TECHNIQUE. PART I. PROPERTIES IN 0.1 M POTASSIUM NITRATE SOLUTION

Soil was collected from a number of sites and depths to 300 cm within four great soil groups (krasnozem, red earth, xanthozem, podzolic). Nitrate, chloride and sulfate adsorption were determined at the soil pH. Various soil properties likely to influence the magnitude of adsorption were determined, and their relative importance to adsorption was assessed using stepwise multiple regression. The subsoils of all four soil groups adsorbed nitrate ranging up to 0.47 mmoles/100 g from 0.005 M potassium nitrate solution. The mean adsorption for soil groups decreased in the order krasnozem, xanthozem, red earth and podzolic. Chloride and sulfate adsorption was largely equivalent to that of nitrate. The variations in adsorption between and within great soil groups could be attributed to changes in organic matter, smectite minerals, hydroxy aluminium, surface area and pH.

Download Full-text

Effects of Seed Treatments and Planting Depth on Emergence of Sea Buckthorn Species

HortTechnology ◽

10.21273/horttech.9.2.213 ◽

1999 ◽

Vol 9 (2) ◽

pp. 213-216 ◽

Cited By ~ 1

Author(s):

Thomas S.C. Li ◽

Douglas A. Wardle

Keyword(s):

Plant Height ◽

Room Temperature ◽

Nitrate Solution ◽

Growing Season ◽

Potassium Nitrate ◽

Seed Treatments ◽

Planting Depth ◽

Potassium Nitrate Solution ◽

Average Plant ◽

Average Plant Height

The influence of seed treatments and planting depth on the percentage of seed emergence of Hippophae rhamnoides L. `Indian-Summer', H. tibetana Schlecht., H. neurocarpa Liu & He, H. salicifolia D. Don, and H. rhamnoides subsp. rhamnoides, sinensis, turkestanica, and mongolica were studied. Surface seeding had higher percentages of seed emergence and more rapid completion of emergence compared to a 1- or 2-cm (0.4- or 0.8-inch) seeding depth. Seeds soaked in water or potassium nitrate solution at room temperature emerged in higher percentages. Average plant height of the eight species and subspecies varied significantly at the end of first growing season.

Download Full-text

Investigation of Inhibitor Polyphosphate Properties for Rotating Steel Disk Electrode in Potassium Nitrate Solution

Eurasian Chemico-Technological Journal ◽

10.18321/ectj375 ◽

2016 ◽

Vol 2 (2) ◽

pp. 167

Author(s):

E.A. Dorokhova ◽

B.D. Burkitbaeva ◽

I.B. Melsitova ◽

T.Z. Ahkmetov ◽

V.I. Kapralova

Keyword(s):

Experimental Data ◽

Protective Effect ◽

Steel Surface ◽

Nitrate Solution ◽

Potassium Nitrate ◽

Disk Electrode ◽

Experimental Conditions ◽

Inhibiting Action ◽

Steel Disk ◽

Potassium Nitrate Solution

<p>Inhibition properties of a number of glass-like polyphosphates on 65J steel were investigated using the gravimetry and methods potassium nitrate solution polarization curves in a 0,1M (pH=6,05). The possibilities<br />of optimum experimental conditions were considered as well. Basing on the experimental data the inhibition coefficient and protective effect were found. The inhibiting action of polyphosphates, apparently, is due to the formation of inhomogeneous protecting film on the steel surface.</p>

Download Full-text

Nitrate leaching and adsorption in a krasnozem from Redland Bay, QLD. II. Soil factors influencing adsorption

Soil Research ◽

10.1071/sr9760181 ◽

1976 ◽

Vol 14 (2) ◽

pp. 181 ◽

Cited By ~ 18

Author(s):

AS Black ◽

SA Waring

Keyword(s):

Nitrate Solution ◽

Potassium Nitrate ◽

Soil Factors ◽

Net Charge ◽

Correlation Studies ◽

Factors Influencing ◽

Potassium Nitrate Solution ◽

Nitrate Adsorption ◽

Strong Relation ◽

Profile Changes

Laboratory determinations of nitrate adsorption from a 0.005M potassium nitrate solution indicated that exclusion occurred in soil from 0-20 cm and that adsorption increased through the subsoil from 0.16 m-equiv./100 g at 45-90 cm to 0.45 m-equiv./100 g between 360 and 600 cm. These profile changes appeared to be related to decreases in organic matter and pH and increases in kaolinite content. Correlation studies showed a strong relation (r = 0.87) between nitrate adsorption and relative net charge as measured by �pH (pHKCl pHH2O) and a negative relation (r = -0.67) with pHH2O. Correlations with sesquioxide fractions were variable and mostly negative.

Download Full-text

Effects of temperature and pre-germinative treatments on seed germination of Talinum triangulare (Jacq. ) willd (Portulacaceae)

Revista Brasileira de Sementes ◽

10.1590/s0101-31222010000400017 ◽

2010 ◽

Vol 32 (4) ◽

pp. 151-157 ◽

Cited By ~ 2

Author(s):

Beatriz Gonçalves Brasileiro ◽

Denise Cunha F. S. Dias ◽

Vicente Wagner Dias Casali ◽

Maria Carmen Bhering ◽

Paulo Roberto Cecon

Keyword(s):

Pure Water ◽

Nitrate Solution ◽

Potassium Nitrate ◽

Germination Percentage ◽

Percentage Germination ◽

Hypochlorite Solution ◽

Significant Difference ◽

Potassium Nitrate Solution ◽

Effects Of Temperature ◽

Talinum Triangulare

The objective of this study was to evaluate the effects of temperature, substrate and pre-germinative treatments on T. triangulare seeds. Four temperatures (constant 20, 25, 30 °C and alternate 20-30 °C) and two types of seeding (on paper and between paper), with light, were evaluated. The pre-germinative treatments evaluated included: immersion in water (24 hours), immersion in 6% hypochlorite solution (1 hour), immersion in 0.2% potassium nitrate solution (24 hours), immersion in 0.05% gibberellin solution (24 hours) and the control (untreated seeds). The highest germination percentage was observed at the alternate temperatures of 20-30 ºC, but with no significant difference between the substrates at this temperature. Soaking seeds in KNO3 gave the highest percentage germination and germination speed index (GSI), which differed from the other treatments except for soaking in water. Pre-soaking of T. triangulare seeds favors germination and may be done only in pure water, resulting in a more rapid and uniform germination.

Download Full-text