Speciations of trace metals in the Danube alluvial sediments within an oil refinery

2005 ◽  
Vol 31 (5) ◽  
pp. 661-669 ◽  
Author(s):  
D RELIC ◽  
D DORDEVIC ◽  
A POPOVIC ◽  
T BLAGOJEVIC
Keyword(s):  
Trace Metals ◽  
Oil Refinery ◽  
Alluvial Sediments

Distributions of Trace Metals and Radionuclides Contamination in Alluvial Sediments from the Lobé River in Cameroon

2021 ◽  
Author(s):  
Durane Tchatchouang Chougong ◽  
Gabriel Ngueutchoua ◽  
Emmanuel Henock Dicka ◽  
Armel Zacharie Ekoa Bessa ◽  
Gisèle Flodore Youbouni Ghepdeu ◽  
...  
Keyword(s):  
Trace Metals ◽  
Alluvial Sediments

scholarly journals Oil pollutants in alluvial sediments: Influence of the intensity of contact with ground waters on the effect of microorganisms

2003 ◽  
Vol 68 (3) ◽  
pp. 227-234 ◽  
Author(s):  
Tatjana Solevic ◽  
Branimir Jovancicevic ◽  
Miroslav Vrvic ◽  
Hermann Wehner
Keyword(s):  
Carbon Number ◽  
Oil Refinery ◽  
Aqueous Environment ◽  
Aqueous Emulsion ◽  
Alluvial Sediments ◽  
Ground Waters ◽  
Aqueous Layer ◽  
Intense Activity ◽  
Algal Type ◽  
Alluvial Formation

The influence of the intensity of interaction between oil pollutants and ground waters in alluvial sediments on the effect of microbial activity was investigated in this work. The study was based on a comparison of detailed analyses of two fractions of an oil pollutant originating from a Danube alluvial formation near the Pancevo Oil Refinery: fraction 1, separated from the aqueous layer by decantation, presumed to have been in less intensive interaction with water, and fraction 2, isolated from the aqueous emulsion by extraction with chloroform, presumed to have been in stronger interaction with water. Both fractions were shown to originate from the same type of oil pollutant. Nevertheless, significant compositional differences between the two fractions were observed. Asignificantly pronounced domination of even carbon number homologues of C18?C24 n-alkanes in fraction 2, atypical for crude oil pollutants, compared to the corresponding distribution observed in fraction 1, suggested a more intense activity, i.e., a much better effect of microorganisms in direct contact with the oil pollutant within the aqueous environment. The identification of even carbon number C14?C18 n-alcohols and C14?C18 fatty acids, as well as cholesterol, in fraction 2, suggested that microorganisms of the algal type in non-photosynthetic conditions were most probably responsible for the mentioned microbial processes.

Organic-geochemical Differentiation of Petroleum-type Pollutants and Study of Their Fate in Danube Alluvial Sediments and Corresponding Water (Pančevo Oil Refinery, Serbia)

2007 ◽  
Vol 183 (1-4) ◽  
pp. 225-238 ◽  
Author(s):  
Branimir Jovančićević ◽  
Miroslav Vrvić ◽  
Jan Schwarzbauer ◽  
Hermann Wehner ◽  
Georg Scheeder ◽  
...  
Keyword(s):  
Oil Refinery ◽  
Alluvial Sediments

XRF and PIXE Analysis of light and Dark Adapted Ocular Tissue

1982 ◽  
Vol 40 ◽  
pp. 190-191
Author(s):  
B. J. Panessa ◽  
H. W. Kraner ◽  
J. B. Warren ◽  
K. W. Jones
Keyword(s):  
Trace Metals ◽  
Pigment Epithelium ◽  
Nerve Impulse ◽  
Light Response ◽  
Ocular Tissue ◽  
Emission Spectrometry ◽  
Retinol Dehydrogenase ◽  
Pixe Analysis ◽  
X Ray ◽  
Optimal Function

During photoexcitation the retina requires specific electrolytes and trace metals for optimal function (Na, Mg, Cl, K, Ca, S, P, Cu and Zn). According to Hagins (1981), photoexcitation and generation of a nerve impulse involves the movement of Ca from the rhodopsin-ladened membranes of the rod outer segment (ROS) to the plasmalemma, which in turn decreases the in-flow of Na into the photoreceptor, resulting in hyperpolarization. In toad isolated retinas, the presence of Ba has been found to increase the amplitude and prolong the delay of the light response (Brown and Flaming, 1978). Trace metals such as Cu, Zn and Se are essential for the activity of the metalloenzymes of the retina and retina pigment epithelium (RPE) (i.e. carbonic anhydrase, retinol dehydrogenase, tyrosinase, glutathione peroxidase, superoxide dismutase...). Therefore the content and fluctuations of these elements in the retina and choroid are of fundamental importance for the maintenance of vision. This paper presents elemental data from light and dark adapted frog ocular tissues examined by electron beam induced x-ray microanalysis, x-ray fluorescence spectrometry (XRF) and proton induced x-ray emission spectrometry (PIXE).

Identifying Sources of Sulfate Aerosols Reaching Whiteface Mountain, NY

1985 ◽  
Vol 43 ◽  
pp. 98-101
Author(s):  
James S. Webber
Keyword(s):  
Trace Metals ◽  
Acid Deposition ◽  
Surface Waters ◽  
Dry Deposition ◽  
Coal Combustion ◽  
Public Awareness ◽  
Sulfate Aerosols ◽  
Wet And Dry Deposition ◽  
Whiteface Mountain ◽  
Toxic Trace Metals

INTRODUCTION“Acid rain” and “acid deposition” are terms no longer confined to the lexicon of atmospheric scientists and 1imnologists. Public awareness of and concern over this phenomenon, particularly as it affects acid-sensitive regions of North America, have increased dramatically in the last five years. Temperate ecosystems are suffering from decreased pH caused by acid deposition. Human health may be directly affected by respirable sulfates and by the increased solubility of toxic trace metals in acidified waters. Even man's monuments are deteriorating as airborne acids etch metal and stone features.Sulfates account for about two thirds of airborne acids with wet and dry deposition contributing equally to acids reaching surface waters or ground. The industrial Midwest is widely assumed to be the source of most sulfates reaching the acid-sensitive Northeast since S02 emitted as a byproduct of coal combustion in the Midwest dwarfs S02 emitted from all sources in the Northeast.

CORROSION - Oil refinery problems at Aruba

1955 ◽  
Vol 47 (9) ◽  
pp. 75-77
Author(s):  
Mars Fontana
Keyword(s):  
Oil Refinery

Quantification and localization of trace metals in natural plankton cells using a synchrotron X-ray fluorescence microprobe

2003 ◽  
Vol 104 ◽  
pp. 435-438 ◽  
Author(s):  
B. S. Twining ◽  
S. B. Baines ◽  
N. S. Fisher ◽  
C. Jacobsen ◽  
J. Maser
Keyword(s):  
Trace Metals ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document