Several characteristic emission lines from the metal targets (Cu, Zn and Pb) were investigated in trace presence of radon gas in the atmospheric air, using Q-SW Nd:YAG laser induced plasma inside a control chamber. The emission lines of metal species are noticeably enhanced in (Rn+air), relative to those in the synthetic air alone. Similar spectra were also taken in various sub-atmospheric 25 D. A. Glatstein, F. M. Francisca: Influence of pH and ionic strength on Cd, Cu and Pb removal from water by adsorption in Na-bentonite, Applied Clay Science 118 (2015), pp. 61–67 10.1016/j.clay.2015.09.003 Crossref Google Scholar

Quantitative analysis of some important metals and

Fe, Al and Mn were found to be in the highest concentration in all types of tobacco products, while Zn, Cu, Ni and Cr were below the average concentration of 40 μg/g, and Pb, Co, As, Se and Cd were below 5 μg/g. All elements, apart from Pb, were high in

Heavy metal remediation by AMF can happen through hyphal "metal binding", which reduces the bioavailability of elements, such as Cu, Pb, Co, Cd, and Zn []. The alleviation of heavy metal toxicity by AMF depends on the fungal partner, plant growth conditions, the type of heavy metal, and its concentration [ 130 ].

The samples were wet-digested using 3 mL HNO 3 (69–72 %) and 3 mL HClO 4 (70 %) at 350 C for 3.5 h and concentrations of heavy metals (Cd, Cr, Cu, Ni, Pb and Zn) in the samples were determined by flame atomic absorption spectrometer.

2020/2/3Lead (Pb) pollution is a widespread environmental problem that is harmful to living organisms. Tartary buckwheat (Fagopyrum tataricum), a member of the family Polygonaceae, exhibits short growth cycles and abundant biomass production, could be an ideal plant for phytoremediation due to its high Pb tolerance. Here, we aimed to explore the molecular basis underlying the responses of this plant

(Cu, Mn, Zn, and Se) and TEs (As, Pb, Cd, and Hg) in the scalp hair and blood samples of smoker and nonsmoker RA patients. For a comparative study, 49 non-RA individuals (smoker and nonsmokers) of the same age group (ranged 42–56 years

Plasmids pMOL28 and pMOL30 of Cupriavidus

ABSTRACT We fully annotated two large plasmids, pMOL28 (164 open reading frames [ORFs]; 171,459 bp) and pMOL30 (247 ORFs; 233,720 bp), in the genome of Cupriavidus metallidurans CH34. pMOL28 contains a backbone of maintenance and transfer genes resembling those found in plasmid pSym of C. taiwanensis and plasmid pHG1 of C. eutrophus, suggesting that they belong to a new class of plasmids.

of Zn whereas the uptake of Cu and Pb is in the same order of magnitude as the other listed crop plants. The ability of tobacco to achieve high heavy metal con-centration in the shoots, combined with high biomass, makes it possible to reach high heavy metalet al

Cluster Configuration DigitalOcean Managed Databases offers three types of nodes: The primary node of a database cluster processes queries, updates the database, returns results to clients, and acts as the single source of data for all other nodes. Standby nodes are copies of the primary node that automatically take over if the primary node fails.

Mn, Fe, Ni, Cu, Zn, Cd and Pb (Koulouri et al., 2008). The digestion procedure was performed in Teflon vessels (DAP – 60K, 60ml/40bar) in a microwave digestion sys-tem (Berghof MWS – 2). An internal standard (In, CPI International, S4400-1000241)

En consquence, une solution de Zn, Hg, Cu, Co, Cd, Bi, etc. agite avec une solution organique de dithizone, donnera sa couleur caractristique au solvant. Nanmoins l'emploi principal de la dithizopne est l'extraction et le dosage du plomb, qui forme un complexe rouge-brique avec la dithizone.

En consquence, une solution de Zn, Hg, Cu, Co, Cd, Bi, etc. agite avec une solution organique de dithizone, donnera sa couleur caractristique au solvant. Nanmoins l'emploi principal de la dithizopne est l'extraction et le dosage du plomb, qui forme un complexe rouge-brique avec la dithizone.

2008/9/24Zn, Cd, Pb, and Co metal tolerance of this line was estimated by measuring the root length of plantlets, which were grown vertically on solid bactoagar medium. In control conditions, at 3 μ m Zn in the nutrient solution, Athma3-1 showed as much development as the wild-type seedlings ( Fig. 3 ).

fabricants d quipement de moulin scheelite en Inde les fabricants d'quipement de lavage du charbon de royaume-uni fabricants liste de concassage Jaipur – Algerial, Trouvez et contactez directement tous les fabricants de concasseurs plus de 60 ans d

Simultaneous Determination of Cd, Pb, Cu, Zn, and Se in

The results indicated that the average concentrations of cadmium (Cd), lead (Pb), copper (Cu), zinc (Zn), and selenium (Se) were 0.0313, 0.344, 2.328, 3.214, and 0.332 mg/L, respectively. Statistical analysis of results indicated that these average concentrations were significantly higher compared with the average concentrations in nonsmokers (P 0.05).

Hydrogen peroxide (H 2 O 2) is a well-documented component of living cells.It plays important roles in host defense and oxidative biosynthetic reactions. In addition there is growing evidence that at low levels, H 2 O 2 also functions as a signaling agent, particularly in higher organisms.

Fe-O-Pb linkages have been detected[2]. For these two phases and due to the low Pb concentrations (2000 ppm), no cluster with a Pb-oxide like structure has been detected. In the case of Zn and calcium silicate interaction, it appears that Zn can be linked at

The semi-total concentrations (USEPA 3051A) (USEPA, 1998) of Zn, Cd, Pb and Cu were 47,910, 1,207, 6,488 and 738 mg kg −1, respectively. Cultures of C. necator strains were grown in 20 mL of LB broth to an OD 560 = 1.0 and transferred to Erlenmeyer

An estimate of diffuse sources of heavy metals (Hg, Cd, Cu, Zn, Pb, Cr, Ni) in the Rhine catchment stressed the urban storm water discharges in the German part and drainage flow in the Dutch part as the most important pathways. Additional sources are erosion

Plant metal homeostasis must be tightly regulated to ensure sufficient micronutrient (Zn, Cu, Fe, etc.) supply to the different organs and to prevent toxic concentrations of these and nonessential metals (Cd, Pb, Co, etc.) from inducing deleterious effects (Clemens, 2001;

The paper presents an evaluation of leachate monitoring data as well as investigation of temporal and seasonal variability of leachate quality. The analysis includes 27 sampling carried out at selected municipal landfill during 7-year observation period. In leachate samples, concentration of Pb, Cu, Zn, Cr, Hg, Cd, Total Organic Carbon (TOC), Polycyclic Aromatic Hydrocarbons (PAH) and value of

transuranic nuclides) and trace metals (in particular Pb, Zn, Cd, Hg and Cu). The vulnerability of the environment to climatic hazards in the coming decades will be addressed by modelling mass transfers on the basis of different climate change scenarios.

To measure total quantity of Fe, Mn, Cu, Zn, Ni, Cr, Co, Pb and Cd in the soils, samples were analysed as described previously (Perrier et al., 2004). To estimate the availability of metals, diethylene triamine pentaacetic acid (DTPA) extraction was performed according to the Lindsay and Norvell method (Lindsay Norvell, 1978 ).

• Les rejets miniers sont riches en carbonates et prsentent de for tes concentrations de Zn (3800-32100 mg/kg), Pb (3670-4160 mg/kg) et Cu (270-350). • L'utilisation des deux rejets miniers comme agrgats engendre une augmentation importante de la quantit d'eau ncessaire au gchage cause de l'importante fraction de fines.

Results Concentrations of Cu, Se, and Zn, and of As and Hg showed substantial correlations, concentrations of As and Hg due mainly to common genetic effects. Genetic linkage analysis showed significant linkage for Pb [chromosome 3, near SLC4A7 (solute carrier family 4, sodium bicarbonate cotransporter, member 7)] and suggestive linkage for Cd (chromosomes 2, 18, 20, and X), Hg

• Les rejets miniers sont riches en carbonates et prsentent de for tes concentrations de Zn (3800-32100 mg/kg), Pb (3670-4160 mg/kg) et Cu (270-350). • L'utilisation des deux rejets miniers comme agrgats engendre une augmentation importante de la quantit d'eau ncessaire au gchage cause de l'importante fraction de fines.

Four types of soil (red, yellow, cinnamon, and paddy soil) from China were used to conduct experiments in pots to study the influence of humic acid (humic acid (HA) and fulvic acid (FA)) on the accumulation of lead (Pb) and cadmium (Cd) in tobacco leaves. In non-polluted soils, the tobacco leaf uptake of Cd was dramatically influenced by the total soil metal concentration and soil properties