Chlorinated pesticides and heavy metals in streams and lakes of Northern Mississippi water

Talaat I. Rihan; Hanaa T. Mustafa; George Caldwell; Leroy Frazier

doi:10.1007/bf01683565

THE CHEMICAL COMPOSITION AND POLLUANTS CONTENT OF SOME ECOLOGICAL AND CONVENTIONAL GREEN FORAGE SOURCES FOR DAIRY COW FEED

Journal of Applied Life Sciences and Environment - Summer ◽

10.46909/journalalse-2021-005 ◽

2021 ◽

Vol 185 (1) ◽

pp. 51-62

Author(s):

Gherasim NACU ◽

Mircea POP ◽

Daniel SIMEANU ◽

Cristina RADU RUSU ◽

Roxana ZAHARIA ◽

...

Keyword(s):

Heavy Metals ◽

Chemical Composition ◽

Production Systems ◽

Absorption Spectrometry ◽

Ecological System ◽

Chlorinated Pesticides ◽

Toxic Heavy Metal ◽

Soxhlet Method ◽

Conventional Systems ◽

Dairy Milk

The quality of feed is very important in dairy milk production. The aim of the current paper was a comparative characterisation in terms of crude chemical composition, Ca and P, heavy metals (Pb, Cd, Zn, Cu), nitrates, nitrites and pesticides, for the natural meadow and green alfalfa, cultivated in ecological and conventional systems, utilised for feeding dairy cows. Sampling and analysis were performed according to established standards and working methods: drying for dry matter (DM); calcination for crude ash (C Ash); Kjeldahl method for crude protein (CP); Soxhlet method for crude fat or ether extract (EE), spectrophotometry for P, nitrates and nitrites; atomic absorption spectrometry for Ca, Pb, Cd, Cu and Zn; gas-chromatography for pesticides. For alfalfa, the highest values in the ecological system were for C Ash (12.68%), EE (2.50%), NFE (35.78%) and Ca (1.79%). For the natural meadow, the highest values in the ecological system were for DM (25.72%), OS (89.32%), EE (2.76%), NFE (45.27%) and Ca (0.70%). The toxic heavy metal content was below the limits allowed (1 mg/kg Cd and 30 mg/kg Pb). For Pb the values determined from the two feeds were between 0.06 mg/kg and 0.16 mg/kg and for Cd between 0.007 mg/kg and 0.02 mg/kg. The pesticides residuum was under the detection limit of 0.05 mg/kg DM for organo-chlorinated pesticides and 0.001 mg/kg for organo-phosphoric pesticides. All the studied forages were safe regarding pollutants (heavy metals, nitrites, nitrates and pesticides), but statistical differences existed between the production systems, such that the ecological system seems to be better.

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Heavy metals, chlorinated pesticides and polychlorinated biphenyls in sudden infant death syndrome (SIDS)

International Journal of Legal Medicine ◽

10.1007/bf01626034 ◽

1991 ◽

Vol 104 (2) ◽

pp. 71-75 ◽

Cited By ~ 3

Author(s):

W. J. Kleemann ◽

J. -P. Weller ◽

M. Wolf ◽

H. D. Tröger ◽

A. Blüthgen ◽

...

Keyword(s):

Heavy Metals ◽

Polychlorinated Biphenyls ◽

Sudden Infant Death Syndrome ◽

Infant Death ◽

Sudden Infant Death ◽

Sudden Infant ◽

Chlorinated Pesticides

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Chlorinated pesticides and heavy metals in human semen

International Journal of Andrology ◽

10.1046/j.1365-2605.2000.00218.x ◽

2000 ◽

Vol 23 (3) ◽

pp. 145-149 ◽

Cited By ~ 22

Author(s):

Kumar ◽

Pant ◽

Srivastava

Keyword(s):

Heavy Metals ◽

Human Semen ◽

Chlorinated Pesticides

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Accumulation of Airborne Trace Pollutants by Arctic Plants and Soil

Water Science & Technology ◽

10.2166/wst.1986.0015 ◽

1986 ◽

Vol 18 (2) ◽

pp. 47-57 ◽

Cited By ~ 19

Author(s):

W. Thomas

Keyword(s):

Heavy Metals ◽

Major Ions ◽

Atmospheric Transport ◽

Polyaromatic Hydrocarbons ◽

Accumulation Rates ◽

Chlorinated Pesticides ◽

Surface Areas ◽

Precipitation Water ◽

Local Emissions ◽

Different Sources

Plant and soil samples from 4 locations in Spitsbergen (Norway) were analysed for major ions, heavy metals, polyaromatic hydrocarbons (PAH) and chlorinated pesticides. The results indicate that trace amounts of these substance groups result from a number of different sources, namely from subsoil material, local emissions and long range atmospheric transport. A comparison of inorganic and organic micropollutant concentrations allows a distinction between trace substance uptake from soil or air. The correlation of plant and air concentrations makes it obvious that elevated accumulation rates of heavy metals in plants result from low level transport of particles. PAH are very effectively retained by species with large surface areas and represent particle concentrations in the air. Benzohexachloride in plants results from precipitation water rather than from direct uptake of gaseous traces.

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Quality and Safety Analysis for some Traditional Homemade Fruit Distillates from Transylvania (North West Romania)

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Agriculture ◽

10.15835/buasvmcn-agr:5155 ◽

2010 ◽

Vol 67 (2) ◽

Author(s):

Teodora Emilia RUSU(COLDEA) ◽

Carmen SOCACIU ◽

Carmen PARAU ◽

Augustin Aurel MOCAN

Keyword(s):

Heavy Metals ◽

Quality Parameters ◽

Alcohol Concentration ◽

Quality Analysis ◽

Chlorinated Pesticides ◽

North West ◽

Three Samples ◽

Acceptable Quality ◽

Two Samples ◽

Safety Parameters

There were analyzed nine homemade samples of plum and apple distillates (brandies) originating from different areas of Romania- Transylvania (Maramureş, Cluj, Bistriţa-Năsăud counties). There were investigated some quality parameters (alcohol concentration, relative density, total dry extract, pH and total acidity) as well two safety markers (organo chlorinated pesticides and heavy metals - lead and copper). The methods used were routine determinations for quality analysis while, gas-chromatographic (GC-FID) quantitative evaluation of organo chlorinated pesticides and atomic absorption analysis for heavy metals. We found generally acceptable quality parameters, included in the standardized limits, while for safety, three samples were found to contain pesticides and two samples to contain higher concentrations of lead or copper. Further investigations will be focused more on safety parameters of a larger number of samples from Transylvania

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Sampling and analysis of the air-water interface with SEM and EDS of microlayers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100157000 ◽

1989 ◽

Vol 47 ◽

pp. 1004-1005

Author(s):

Randall W. Smith ◽

John Dash

Keyword(s):

Heavy Metals ◽

Surface Microlayer ◽

Surface Films ◽

Water Interface ◽

Physical Processes ◽

Infrared Spectroscopic Analysis ◽

Eds Analysis ◽

Air Water Interface ◽

Significant Area ◽

Bulk Chemical

The structure of the air-water interface forms a boundary layer that involves biological ,chemical geological and physical processes in its formation. Freshwater and sea surface microlayers form at the air-water interface and include a diverse assemblage of organic matter, detritus, microorganisms, plankton and heavy metals. The sampling of microlayers and the examination of components is presently a significant area of study because of the input of anthropogenic materials and their accumulation at the air-water interface. The neustonic organisms present in this environment may be sensitive to the toxic components of these inputs. Hardy reports that over 20 different methods have been developed for sampling of microlayers, primarily for bulk chemical analysis. We report here the examination of microlayer films for the documentation of structure and composition.Baier and Gucinski reported the use of Langmuir-Blogett films obtained on germanium prisms for infrared spectroscopic analysis (IR-ATR) of components. The sampling of microlayers has been done by collecting fi1ms on glass plates and teflon drums, We found that microlayers could be collected on 11 mm glass cover slips by pulling a Langmuir-Blogett film from a surface microlayer. Comparative collections were made on methylcel1ulose filter pads. The films could be air-dried or preserved in Lugol's Iodine Several slicks or surface films were sampled in September, 1987 in Chesapeake Bay, Maryland and in August, 1988 in Sequim Bay, Washington, For glass coverslips the films were air-dried, mounted on SEM pegs, ringed with colloidal silver, and sputter coated with Au-Pd, The Langmuir-Blogett film technique maintained the structure of the microlayer intact for examination, SEM observation and EDS analysis were then used to determine organisms and relative concentrations of heavy metals, using a Link AN 10000 EDS system with an ISI SS40 SEM unit. Typical heavy microlayer films are shown in Figure 3.

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