scholarly journals Microscopic fungi sorption of chemical elements from multicomponent solution

2019 ◽  
Vol 488 (4) ◽  
pp. 425-428
Author(s):  
L. M. Pavlova ◽  
L. P. Shumilova ◽  
V. I. Radomskaya ◽  
A. P. Sorokin ◽  
V. V. Ivanov
Keyword(s):  
Toxic Elements ◽  
Chemical Elements ◽  
Multicomponent Solution ◽  
Microscopic Fungi ◽  
Mineral Formation ◽  
Strain Specificity ◽  
Multicomponent Solutions

The data of micromycetes species and strain specificity in the process of toxic elements extracting from multicomponent solutions were obtained as results of modal experiments. The results also indicate the capability of biogenic mineral formation in organic strata.

Primary Teeth and Hair as Indicators of Environmental Pollution

2016 ◽  
Vol 40 (2) ◽  
pp. 152-155 ◽  
Author(s):  
TE Shishniashvili ◽  
NN Suladze ◽  
VV Margvelashvili
Keyword(s):  
Environmental Pollution ◽  
Toxic Elements ◽  
Chemical Elements ◽  
Epidemiological Survey ◽  
Essential Elements ◽  
World Health ◽  
Dental Tissues ◽  
Dental Hard Tissues ◽  
Hard Tissues ◽  
Health Organization

Objectives: To study the influence of environmental pollution on the mineralization of dental hard tissues by using biosubstrates: teeth and hair. :Study design: At the first stage epidemiological survey was conducted in polluted and less polluted areas of Tbilisi (Georgia). We studied 525 children aged 3 and 4 years. Caries prevalence and intensity was defined by the methodology of World Health Organization. At the second stage the chemical elements content was studied in hair and teeth hard tissues of 24 children by X - ray fluorescent spectroscopy method. Results: The prevalence of dental caries in the polluted region was 46%, caries intensity − 1.92 (± 2.842). In the less polluted region prevalence was 37%, caries intensity − 1.47 (± 2.571). These data are statistically reliable (p < 0.05). The study of hair and tooth tissues showed that the toxic elements (Pb, Hg, Sn, Ti) content in these tissues was higher in environmentally unfavorable than in favorable conditions. Conclusion: Hair and dental tissues can be used as indicators of environmental pollution. Our survey showed that toxic elements content in dental hard tissues was higher and the level of essential elements was less in polluted than in less polluted areas of Tbilisi.

Determination of Urinary Constituents in Solutions by Least-Squares Resolution of Ultraviolet Spectrums

1968 ◽  
Vol 14 (4) ◽  
pp. 310-325 ◽  
Author(s):  
W Davis ◽  
E Schonfeld ◽  
A H Kibbey
Keyword(s):  
Least Squares ◽  
Reference Materials ◽  
Multicomponent Solution ◽  
Water Solutions ◽  
Multicomponent Solutions

Abstract Least-squares resolution of ultraviolet (UV) spectrums has been tested as a method for determining the concentration of each UV-absorbing urinary component in a multicomponent solution. The tests reported here involved solutions containing 4-12 components chosen from 17 reference materials: p-aminobenzoic, anthranilic, ascorbic, ferulic, hippuric, p-hydroxybenzoic, uric, vanillic, and xanthurenic acids, and adenine, creatinine, cytosine, ergothioneine, hypoxanthine, indican, N-methylnicotinamide, and tryptophan. Spectrums of these reference and multicomponent solutions were measured from 1900 to 4000 Â, rather than over the more usual range of 2200 to 4000 Â; concentrations of individual components in unbuffered water solutions were in the range 0.4-100 mg./L. While the maximum number of solutes capable of being analyzed by this method cannot be given, this brief study shows that as many as 10 UV-absorbing urinary components could be determined quantitatively by least-squares resolution of the spectrum of the solution. All of the 17 species used in this study showed absorption in the region 1900-2200 Â; measurements in this region contributed greatly to the accuracy with which concentrations could be calculated.

scholarly journals It’s Time to Replace the Term “Heavy Metals” with “Potentially Toxic Elements” When Reporting Environmental Research

2019 ◽  
Vol 16 (22) ◽  
pp. 4446 ◽  
Author(s):  
Olivier Pourret ◽  
Andrew Hursthouse
Keyword(s):  
Heavy Metals ◽  
Toxic Elements ◽  
Chemical Elements ◽  
Natural Sciences ◽  
Potentially Toxic Elements ◽  
Toxic Element ◽  
Environmental Research ◽  
Environmental Sciences ◽  
Common Term ◽  
Pollution Impacts

Even if the Periodic Table of Chemical Elements is relatively well defined, some controversial terms are still in use. Indeed, the term “heavy metal” is a common term used for decades in the natural sciences, and even more in environmental sciences, particularly in studies of pollution impacts. As the use of the term appears to have increased, we highlight the relevance of the use of the term “Potentially Toxic Element(s)”, which needs more explicit endorsement, and we illustrate the chemical elements that need to be considered.

scholarly journals Influence of the Indicators of Carbohydrate Metabolism on the Elemental Status

2021 ◽  
Author(s):  
Olga Marshinskaia ◽  
Tatiana Kazakova ◽  
Svetlana Notova ◽  
Maksim Molchanov
Keyword(s):  
Diabetes Mellitus ◽  
Trace Elements ◽  
Toxic Elements ◽  
Normal Values ◽  
Chemical Elements ◽  
Serum Parameters ◽  
Glucose Levels ◽  
Icp Ms ◽  
Elemental Status ◽  
Elevated Glucose

This study examined the elemental status of the hair and blood biochemistry of young men in the Orenburg region (n=38) with different glucose levels. Estimation of the element status was carried out through the study of the chemical composition of the hair by ICP-AES and ICP-MS. It was found that the studied serum parameters (Ca, Mg, Fe, P cholesterol, thyroxine, TSH and testosterone) were within normal values, and no statistically significant differences were obtained when comparing the groups. The concentration of chemical elements in the hair of the men in each group was in the range of physiologically acceptable values for this region. In the group with elevated glucose levels, there was a tendency for the men to have lower values of Ca and Mg, and higher levels of K, Na, P and a number of toxic elements (Al, Cd, Sn, Hg, Pb). Keywords: elemental status, trace elements, diabetes mellitus, metabolism

scholarly journals Influence of the concentrations of essential and toxic elements in the blood serum on the indicators of sperm quality in Arabian purebred stallions

2022 ◽  
Vol 42 ◽  
pp. 01019
Author(s):  
V. V. Kalashnikov ◽  
A. M. Zaitsev ◽  
M. M. Atroschenko ◽  
O. A. Zavyalov ◽  
A. N. Frolov ◽  
...  
Keyword(s):  
Trace Elements ◽  
Reproductive Health ◽  
Blood Serum ◽  
Toxic Elements ◽  
Chemical Elements ◽  
Sperm Quality ◽  
Optimal Range ◽  
Essential And Toxic Elements ◽  
The Relationship ◽  
Qualitative Characteristics

Analysis of trace elements in blood serum can be an important tool for monitoring micronutrient supply in stallions in order to maintain reproductive health. In this regard, the purpose of this study was to determine the relationship between the concentrations of macro- and microelements in the blood serum of stud stallions with the qualitative characteristics of fresh sperm and sperm after cryopreservation and thawing. The studies were carried out on purebred Arabian stallions (n=50). As a biomaterial for studies, we used blood serum, fresh and thawed sperm after cryopreservation. The elemental composition of seminal plasma was determined by 25 chemical elements Co, Cr, Cu, Fe, I, Mn, Se, Zn Ca, K, Mg, P, B, Li, Si, V Na, Ni, Sn, Hg, Sr, Al, As, Cd, Pb) by ICP-DRC-MS methods. It was found that the concentrations of Mg and Co in the blood serum positively correlate with the qualitative characteristics of the sperm of Arabian purebred stallions. Wherein, the optimal range of concentrations of Mg in the blood serum, typical for stallions with relatively high indicators of sperm quality, is 22.64 to 27.05 μg/g; Co – 0.001 to 0.0015 μg/g.

PSXII-5 Influence of the total content of toxic elements in hair on semen qualitative characteristics of the Holstein sires

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 252-253
Author(s):  
Stanislav Platonov ◽  
Alexey Frolov ◽  
Anatoly Kharlamov ◽  
Oleg Zavyalov
Keyword(s):  
Toxic Elements ◽  
Chemical Elements ◽  
Sperm Concentration ◽  
Total Content ◽  
Quality Characteristics ◽  
Research Centre ◽  
Group Iii ◽  
Group I ◽  
Hair Samples ◽  
Selection Of

Abstract It is known that chemical elements affect the quality characteristics of animal sperm. The purpose of this study was to assess the effect of the level of toxic load determined by the concentration of Al, Cd, Pb, Sn, Hg, Sr in wool on the quality characteristics of sperm. The studies were carried out on the Holstein bulls, the age at the selection of biosubstrates is 3–4 years (n = 65), which, based on data according to the amount of toxic elements (∑tox, mmol / kg) in hair, were divided into 3 groups: I - up to the 25th percentile, II - 25–75 percentile, III - above 75 percentile. Parameters evaluated were ejaculate in volume (ml) for 2 adjacent wells, sperm concentration (billions/ml) using a digital photometer, sperm activity (points) using a phase contrast microscope, the number of frozen doses (pcs), on average for the month preceding the selection of hair. Hair samples were taken from the withers in an amount of - 0.4 g. The elemental composition of wool was determined by 6 toxic elements (Al, Cd, Pb, Sn, Hg, Sr) by the AES-ICP and MS-ICP methods. According to the research results, it was established that as ∑tox increases from 0.114 mmol/kg in group I to 0.341 mmol/kg in group III, the volume of ejaculate decreases by 37.1% (Р£0,05), the concentration of sperm by 30.0% (Р£0,001), activity - by 0.2 points (Р£0,05), the number of frozen doses - by 182.4% (Р£0,001). Thus, the results of the studies carried out show the dependence of the quality indicators of sperm on the total content of toxic elements in hair of breeding bulls and it can be used as a diagnostic biosubstrate. The studies were carried out in accordance with the research plan for 2019–2021. FSBSI Federal Research Centre BST RAS (No. 0761-2019-0006).

Biosorption of Toxic Elements from Multicomponent Solutions by Microfungal Biomass

2019 ◽  
Vol 89 (13) ◽  
pp. 2845-2857 ◽  
Author(s):  
L. M. Pavlova ◽  
V. I. Radomskaya ◽  
L. P. Shumilova ◽  
T. V. Kezina ◽  
V. V. Ivanov
Keyword(s):  
Toxic Elements ◽  
Multicomponent Solutions

scholarly journals Utilization of Rats Purun (Eleochalists of Dulcis) and Water Hyacinth (Eichhornia Crassipes) to Reduce Mercury Level (Hg) With Phytoremediation Method

2020 ◽  
Vol 2 (1) ◽  
pp. 1-11
Author(s):  
Sileni Putri ◽  
Nasoetion Nasoetion ◽  
Muhtadi Muhtadi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Toxic Elements ◽  
Chemical Elements ◽  
Mercury Level ◽  
Organic Fertilizer ◽  
Sample Analysis ◽  
Tidal Swamp

Metal mercury (Hg), has the chemical name hydragyrum which means liquid. Mercury metal is represented by Hg. In the periodic chemical elements Hg rank (NA) 80 and have atomic weights (BA 200,59). Rat Purun (Eleocharis dulcis) and water hyacinth (Eichhorniacrassipes) are plants that are widely found in tidal swamp land. Both plants can be used as organic fertilizer, biofilter, and absorb toxic elements such as heavy metals Lead (Pb), Iron (Fe), Mercury (Hg), Sulphate (SO4). This study aims to determine the ability of rat purun plants (Eleochalisdulcis) and water hyacinth (Eichhorniacrassipes) in reducing mercury (Hg) levels in water and to determine the effectiveness of rat purun plants (Eleochalisdulcis) and water hyacinth (Eichhorniacrassipes) in absorbing mercury Hg. Sample analysis was carried out at the Bandar Lampung Standardization Research Center.The results obtained by rat purun plants (Eleochalisdulcis) can reduce mercury levels (Hg). The effectiveness of reducing heavy metal mercury (Hg) is 97.88%. Water hyacinth plants (Eichhorniacrassipes) have effectiveness in reducing heavy metals mercury (Hg) which is equal to 96.66%.

scholarly journals Selected Essential and Toxic Chemical Elements in Hypothyroidism—A Literature Review (2001–2021)

2021 ◽  
Vol 22 (18) ◽  
pp. 10147
Author(s):  
Anna Błażewicz ◽  
Patrycja Wiśniewska ◽  
Katarzyna Skórzyńska-Dziduszko
Keyword(s):  
Toxic Elements ◽  
Web Of Science ◽  
Chemical Elements ◽  
Physiological State ◽  
Potentially Toxic Elements ◽  
The Body ◽  
Toxic Chemical ◽  
Thyroid Status ◽  
Hormone Synthesis ◽  
Essential Chemical

Thyroid hormones are known for controlling metabolism of lipids, carbohydrates, proteins, minerals, and electrolytes and for regulating body temperature. Normal thyroid status depends on the chemical/elemental composition of body fluids and tissues, which changes depending on physiological state, lifestyle and environment. A deficiency or excess of certain essential chemical elements (selenium, zinc, copper, iron or fluorine) or exposure to toxic (cadmium or lead) or potentially toxic elements (manganese or chromium) interacts with thyroid hormone synthesis and may disturb thyroid homeostasis. In our review, accessible databases (Scopus, PubMed and Web of Science) were searched for articles from 2001–2021 on the influence of selected chemical elements on the development of hypothyroidism. Our review adopted some of the strengths of a systematic review. After non-eligible reports were rejected, 29 remaining articles were reviewed. The review found that disruption of the physiological levels of elements in the body adversely affects the functioning of cells and tissues, which can lead to the development of disease.

scholarly journals Toxic Elements in River Sediments: Case Study Elbe and Its Tributaries

Geografie ◽  
1995 ◽  
Vol 100 (4) ◽  
pp. 268-275
Author(s):  
Zdeněk Borovec
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Toxic Elements ◽  
Chemical Elements ◽  
River Sediments ◽  
The Other ◽  
Geochemical Background ◽  
High Share

Concentrations of 34 chemical elements in river sediments of Elbe and its tributaries were determined with help of instrumental neutron activation analysis, atomic absorption spectrophotometric method and some other specialized methods. Only particles smaller than 0.063 mm were examined. The results were compared with the local geochemical background. River sediments showed significantly high share of silver, gold, cadmium, copper, mercury, zinc, lead, arsenic, selenium, molybdenum, chromium, antimony, and tin. Sediments of Vltava, Jizera, Bílina, and Ploučnice rivers are the most polluted ones; on the other hand, Cidlina, Doubrava, and Chrudimka rank among the cleanest rivers. The degree of urbanization and industrialization play an important role, as well as the use of agricultural fertilizers. The influence of increased denudation as a result of acid pollutants has been recorded on some places, too.

Sign in / Sign up

Export Citation Format

Share Document