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Trace metals
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Ebook Clinical biochemistry & metabolic medicine (Eighth edition): Part 2 includes content: Vitamins, trace elements and metals, the gastrointestinal tract, liver disorders and gallstones, cardiovascular disease, clinical biochemistry at the extremes of age, patient sample collection and use of the laboratory,… and other contents
188p
longtimenosee03
01-02-2024
0
0
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To investigate the relationship among 18 heavy metals, microsatellite instability (MSI) status, ERCC1, XRCC1 (rs25487), BRAF V600E and 5 tumor markers and their role in the development of colorectal cancer (CRC).
12p
vioracle
29-09-2023
4
3
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Studies were carried out on the trace metal contamination of Sarotherodon melanotheron from Alaro stream in Ibadan, Nigeria. Fish were collected between January and December 2003 (Dry and rainy season).Muscle, liver, bone, gills, gut and fins were analyzed for arsenic (As), cadmium (Cd) and lead (Pb) using the inductively coupled plasma-mass spectrometer (ICP-MS).
4p
viisac
23-09-2023
2
1
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Compare to other documents, our study was for the first time validated the quality criteria of ICP-MS for analyzing nineteen metal levels in wastewater samples. The application of this method was then tested by analyzing nineteen metal levels in twenty-three wastewater samples in the Tham Luong Canal in Ho Chi Minh City. Based on these results, the correlation of the concentration of these metals in wastewater samples was determined.
7p
viengels
25-08-2023
7
3
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Surface Enhanced Raman Scattering (SERS) is a technique that is increasingly being used to detect trace amounts of various types of molecules, especially organic and biological molecules. The SERS effect is available mainly due to the SERS substrate - a noble metal surface that is rough at the nano level or a set of noble metal nanoparticles in a certain arrangement.
12p
vispiderman
15-06-2023
2
1
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This study investigated trace essential metals (Cu, Zn and Cr) and non-essential metals (Pb, Cd and Hg) in water, sediment and tissues of water spinach, snake head fish and swamp eel from the Saigon River. Sampling was conducted from January to December 2004 at three sites. Three water and sediment samples, edible parts of twenty water spinach (Ipomea aquatica) samples (leaves and stems), twenty snake head fish (Channa striata) and twenty swamp eels (Monopterus albus) were collected at each site.
148p
runthenight07
01-03-2023
8
2
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The main aim of this investigation was to develop a low-cost solution to remove trace metals from the aqueous phase using biochar. This study investigated (i) the effect of giant reed-based biochar produced at varying temperatures in the treatment of aqueous solutions polluted with lead; and (ii) how the production of biochar at different temperatures affected its adsorption capacity for lead from the aqueous phase.
116p
runthenight04
02-02-2023
9
3
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The results showed that SOM content was higher in horizon A, whereas mineral matrix elements Al, Fe, and Mg contents were higher in horizon B. Ca and P contents gradually decreased with soil depth due to the influence of fertilizer. Three types of trace element concentration profiles were identified: (1) decrease with depth for Cd and Hg
7p
thebadguys
15-01-2022
7
0
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The traffic factor increases during the day possibly due to the higher number of vehicles. Bivariate polar plots suggest the Houston Ship Channel area as the primary emission source for LPG, natural gas/crude oil, FCC/high temperature operations, and petrochemical industries.
16p
thebadguys
15-01-2022
10
0
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This unique cross-border study documented metal contamination of drinking water and locally grown vegetables near mining activities in Zambia and DRC, with the contamination being worse in DRC. The higher pollution observed in DRC compared to Zambia must largely be attributed to differences in environmental governance between the two countries.
11p
thebadguys
15-01-2022
4
1
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This finding raise doubt about the effectiveness of the traditional adsorption isotherms and kinetics models to describe trace metals removal using RM, contributing with new insights for future researches involving these hazardous materials.
10p
thebadguys
15-01-2022
7
0
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Considerable interest is continuing to be shown in the speciation of metals, metalloids, and organometals due to the dependence of their toxicity and mobility on their chemical form. This review focuses on the speciation analysis of metals, metalloids, and organometals by solid phase extraction before spectrometric detection, and all aspects of analytical speciation such as determination of oxidation states and organometallic compounds. Some applications of speciation of metals and metalloids are also presented and discussed in this review.
21p
langthannam
29-12-2021
13
0
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An analysis of the taxonomic diversity of benthic diatoms was carried out for near-shore biotopes of Crimea with different content of trace metals and organic pollutants (PCBs, PAHs, DDTs). Taxonomic distinctness indices such as average taxonomic distinctness, AvTD (Δ+) and variation in taxonomic distinctness, VarTD (Λ+) were used for evaluation of the hierarchical structure of diatom taxocenes of two intact sites (Dvuyakornaya Bay and Cape Fiolent) and two heavily polluted water areas (Sevastopol Bay and Balaklava Bay).
11p
tudichquannguyet
29-11-2021
7
1
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The kinetics and mechanism of silver(I)-catalyzed oxidation of allyl alcohol with peroxodiphosphate in acetate buffers have been studied. The rate is independent of allyl alcohol concentration. The effect of other reaction parameters such as hydrogen and acetate ions has also been studied. The rate law accounting for all experimental observations corresponds to the proposed mechanism. The energy and entropy of activation have also been evaluated by employing Eyring plots.
12p
tudichquannguyet
29-11-2021
11
1
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The impact of rising levels of various heavy metals in the environment from multiple industrial, agriculture, domestic, and technological activities is of great concerns, as heavy metals cause serious health effects for both humans and wildlife. An effective and green chemistry procedure was used for simultaneous extraction of ultra-trace copper and nickel ions in natural waters (e.g. river and well waters) by air assisted liquid-liquid microextraction combined with solidified floating organic drop microextraction (AALLMESFOD).
15p
tudichquannguyet
29-11-2021
8
1
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In this study, characterization of PM10 mass and its trace metals concentration at road sites in Bac Giang province located in the North of Vietnam during two different seasons has been performed. PM10 samples at 11 road sites using the high volume SIBATA HV-500R (Japan) at the flow rate of 400 L/min were collected during 10 hours (from 7:00 to 17:00) at flat low-lying plain, midland, mountain and highland areas.
11p
chauchaungayxua12
09-07-2021
15
1
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Constructed wetland is a low cost, effective technology and it is still in the state of improvement to enhance the treatment efficiency, especially in nutrient and trace elements treatment. This study investigated the effect of aerobic and anoxic conditions in Horizontal Subsurface Flow Constructed Wetland (HSFCW) on nutrient, organic, metal and Octylphenol - OP (Endocrine disrupting chemical) treatment.
8p
larachdumlanat127
02-01-2021
11
2
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Ebook Aviation and airport security - Terrorism and safety concerns: Part 2 present content private security personnel versus transportation administration security personnel— increased supervision; metal detectors, x-ray inspection, explosive detection, and trace detection devices: will the public tolerate the intrusion; cargo security a loose end; security and the rules of law—a slippery slope.
179p
kethamoi6
01-07-2020
18
2
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Heavy metals like cadmium, nickel, lead, chromium, mercury etc are important environmental pollutants in areas with anthropogenic pressure. Their presence in the atmosphere, soil and water, even in traces can cause serious problems to all organisms. Heavy metal accumulation in soils is of great concern in agricultural production due to the adverse effects on food quality, crop growth (Ma et al., 1994) and environmental health. Heavy metal bioaccumulation in the food chain can be especially highly dangerous to human health.
12p
angicungduoc5
12-06-2020
15
1
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Heavy metal is a general technical term that applies to the group of metals and metalloids with density greater than 4±1 g cm-3 or elements having atomic weight more than 20. Heavy metals are considered toxic to living organisms and even trace metals that are considered essential for life can be toxic when present at excessive level, impair important biochemical process and also pose threat to human health, plant growth and animal life. The heavy metals, As, Cd, Cr, Ni and Pb were found accumulated in seeds collected from various sites.
7p
trinhthamhodang1213
02-06-2020
16
0
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