Electrochemical Evaluation of the Organic Matter Content of Edible Sea and Rock Salts Retailed in the Greek Market.

The release of copper-complexing ligands in 14 sea and 10 rock edible salts retailed in the Greek market has been examined. The concentration of ligands (LT) and the copper-binding strength (logKapp) of salt solutions were determined with Differential Pulse Anodic Stripping Voltammetry (DPASV). The tested salt samples were found to have Cu complexing ligands, at concentrations ranging from <0.1 to 61.2 nmol g-1. In none of the salt samples examined (except a single one) were LTvalues exceeded by the corresponding total copper concentrations, indicating that Cu is fully complexed. Aiming to partially characterize the physico-chemical properties of the organic material contained in salts, the surface active substances (SAS) and catalytically active compounds (CAC) were measured, for the first time, in salt solutions by sensitive electrochemical techniques. Higher concentrations of organic carbon and SAS were determined in sea samples compared to rock salts.

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Constant current chronopotentiometric stripping characterisation of organic matter in seawater from the northern Adriatic, Croatia

Environmental Chemistry ◽

10.1071/en13122 ◽

2014 ◽

Vol 11 (2) ◽

pp. 158 ◽

Cited By ~ 4

Author(s):

Slađana Strmečki ◽

Jelena Dautović ◽

Marta Plavšić

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Seasonal Changes ◽

Electrochemical Techniques ◽

Organic Matter Content ◽

Matter Content ◽

Constant Current ◽

Po River ◽

Northern Adriatic ◽

Catalytically Active

Environmental context We determined seasonal changes in the organic matter content of the northern Adriatic with newly applied electrochemical techniques able to measure catalytically active organics. The inflow of the Po River and its nutrient load are responsible for the observed changes in the type and concentrations of organic matter in the area. Abstract Catalytically active polysaccharides (Cat PSs) and nitrogen-containing polymeric organic material (N-POM) were determined in seawater from the northern Adriatic station ST101. Catalytically active organics were measured by applying electrochemical methods of adsorptive transfer chronopotentiometric stripping with medium exchange and chronopotentiometric stripping in unmodified seawater. Their concentrations were expressed in milligrams per cubic decimetre–3--> of equivalents of the model calibrating substances, polysaccharide xanthan and protein human serum albumin. The optimal electroanalytical conditions for determination of Cat PSs in seawater were evaluated and defined. Seasonal changes of Cat PSs and N-POM were observed during the period 2011–2013. The highest values were determined in the spring–summer period and the lowest in winter. Cat PSs and N-POM were present in both the dissolved and particulate organic carbon fractions. Cat PSs and N-POM showed a statistically significant positive correlation with the concentrations of surface-active substances. A weak but statistically significant correlation was found between Cat PSs and dissolved organic carbon concentrations. Copper complexing capacities in the period 2011–2013 were in the range of 41–130nmoldm–3.

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Possibilities of electrochemical techniques in metallothionein and lead detection in fish tissues

Czech Journal of Animal Science ◽

10.17221/2232-cjas ◽

2008 ◽

Vol 52 (No. 5) ◽

pp. 143-148 ◽

Cited By ~ 22

Author(s):

S. Křížková ◽

O. Zítka ◽

V. Adam ◽

M. Beklová ◽

A. Horna ◽

...

Keyword(s):

Lead Concentration ◽

Anodic Stripping Voltammetry ◽

Electrochemical Techniques ◽

Perca Fluviatilis ◽

Stripping Voltammetry ◽

Differential Pulse ◽

Fresh Weight ◽

Fish Tissues ◽

Naturally Occurring ◽

Lead Detection

In the present paper, we report on the use of adsorptive transfer stripping technique in connection with chronopotentiometric stripping analysis for metallothionein determination and of differential pulse anodic stripping voltammetry for lead detection in tissues of wild perch (<i>Perca fluviatilis</i>, <i>n</i> = 6) from the Svratka River in Brno, Czech Republic. Primarily, we determined the content of MT in tissues (muscles, gonads, liver and spleen) of perch. We measured the highest content of MT in spleen and liver (100−350 ng MT per gram of fresh weight). We assume that the content of MT determined in perch tissues is probably related with the age of the fish and, therefore, with their exposition to heavy metals naturally occurring in the Svratka River. We detected a lead concentration in the tissues of one perch. It clearly follows from the results that the content of MT well correlates with the concentration of lead.

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Methylmercury Generation in Seawater by Transmethylation Reactions of Organolead and Organotin Compounds With Inorganic Mercury as Monitored by Multinuclear Magnetic-Resonance and Electrochemical Techniques

Australian Journal of Chemistry ◽

10.1071/ch9861167 ◽

1986 ◽

Vol 39 (8) ◽

pp. 1167 ◽

Cited By ~ 15

Author(s):

GN Howell ◽

MJ Oconnor ◽

AM Bond ◽

HA Hudson ◽

PJ Hanna ◽

...

Keyword(s):

Magnetic Resonance ◽

Anodic Stripping Voltammetry ◽

Electrochemical Techniques ◽

Inorganic Mercury ◽

Stripping Voltammetry ◽

Differential Pulse ◽

Differential Pulse Polarography ◽

Resonance Spectroscopy ◽

Ambient Temperatures ◽

Pulse Polarography

The generation of methylmercury species by reactions between inorganic mercury and methylated forms of lead and tin in seawater and other matrices is described. The reactions were investigated by 119Sn, 199Hg and 207Pb multinuclear Fourier transform magnetic resonance spectroscopy and by differential pulse polarography and anodic stripping voltammetry. Methylmercury chloride is shown to be produced from mixtures of inorganic mercury with methyltin or methyllead species over the 10-2-10-8 M concentration range at ambient temperatures in seawater and artificial seawater.

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Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra

Journal of Advanced Research in Alternative Energy Environment and Ecology ◽

10.24321/2455.3093.202006 ◽

2020 ◽

Vol 07 (02) ◽

pp. 1-3

Author(s):

Amita M Watkar ◽

Keyword(s):

Organic Matter ◽

Soil Quality ◽

Agricultural Land ◽

Organic Matter Content ◽

Chemical Properties ◽

Matter Content ◽

Soil Attributes ◽

Essential Components ◽

Agricultural Land Management ◽

Physical And Chemical

Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.

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Technosols Development in an Abandoned Mining Area and Environmental Risk Assessment

Applied Sciences ◽

10.3390/app11156982 ◽

2021 ◽

Vol 11 (15) ◽

pp. 6982

Author(s):

Chiara Ferronato ◽

Gilmo Vianello ◽

Mauro De Feudis ◽

Livia Vittori Antisari

Keyword(s):

Central Italy ◽

Organic Matter Content ◽

Chemical Properties ◽

Soil Surface ◽

Mining Area ◽

Physicochemical Characteristics ◽

Matter Content ◽

Mine Tailing ◽

Inorganic Materials ◽

Soil Features

The study of Technosols development, spatial distribution and physicochemical characteristics is becoming more and more important in the Anthropocene Era. The aim of the present study was to assess soil features and potential heavy metal release risk of soils developed on different mine tailing types after the waste disposal derived from mining activity in Central Italy. Soils were analyzed for their morphological, physical and chemical properties, and a chemical sequential extraction of heavy metals was performed. The investigated soils were classified as Technosols toxic having in some layer within 50 cm of the soil surface inorganic materials with high concentrations of toxic elements. Our findings showed that the bioavailability of potentially toxic element concentrations in the soil changed according to the origin of the mine tailing. However, because of the acidic pH, there is a serious risk of metals leaching which was reduced where the soil organic matter content was higher.

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