CATHODE RAY TUBE (CRT) LEAD GLASS: LEAD LEACHING STUDY AFTER A CHELATING AGENT TREATMENT

2015 ◽  
Vol 14 (7) ◽  
pp. 1503-1509 ◽  
Author(s):  
Elena Bursi ◽  
Chiara Ponzoni ◽  
Isabella Lancellotti ◽  
Ivano Vassura ◽  
Laura Ferroni ◽  
...  
Keyword(s):  
Chelating Agent ◽  
Lead Glass ◽  
Cathode Ray Tube ◽  
Lead Leaching ◽  
Agent Treatment

Chelating Agent Treatment on Leaded Residuals from Glass Separated Urban Collection to Be Used in Cement Mortars

2018 ◽  
Vol 9 (12) ◽  
pp. 2493-2501 ◽  
Author(s):  
Elena Bursi ◽  
Isabella Lancellotti ◽  
Luisa Barbieri ◽  
Andrea Saccani ◽  
Maria Chiara Bignozzi
Keyword(s):  
Chelating Agent ◽  
Cement Mortars ◽  
Agent Treatment

Efficacy of Dimercapto Chelatin Agents for the Treatment of Poisoning by Percutaneously Applied Dichloro(2-chlorovinyl)arsine in Rabbits

1993 ◽  
Vol 12 (3) ◽  
pp. 241-246 ◽  
Author(s):  
R.H. Inns ◽  
P. Rice
Keyword(s):  
Survival Time ◽  
Chelating Agents ◽  
Chelating Agent ◽  
Lethal Effects ◽  
Dosing Schedule ◽  
Equimolar Dose ◽  
Low Toxicity ◽  
Liver Changes ◽  
Agent Treatment

The efficacy of three chelating agents, BAL, DMPS and DMSA has been evaluated in rabbits as treatments for systemic dichloro(2-chlorovinyl)arsine [lewisite] poisoning by the percutaneous route. Chelating agent treatment reduced the incidence and severity of pathological liver changes following lewisite poisoning. There was no marked difference between the three chelating agents for protection against lethality when screened at an equimolar dose of 40 μmol kg-1. The results indicated DMPS and DMSA may prolong survival time compared with BAL. The low toxicity of DMPS and DMSA compared to BAL enabled doses of 160 μmol kg-1 on a more prolonged dosing schedule to be used for DMPS and DMSA. This schedule showed DMPS and DMSA to give a significant improvement in protection against the lethal effects of percutaneous lewisite compared to that of BAL. It was concluded that DMPS and DMSA have significant advantages over BAL for use as treatment for systemic lewisite poisoning.

scholarly journals Acid and heat treatment to reduce lead leaching from cathode ray tube funnel glass

2020 ◽  
Vol 128 (3) ◽  
pp. 149-152
Author(s):  
Tomoko AKAI ◽  
Kohei FUKUMI ◽  
Masaru YAMASHITA
Keyword(s):  
Heat Treatment ◽  
Cathode Ray Tube ◽  
Lead Leaching

Effects of NTA on the Fate of Heavy Metals in Sediments

1993 ◽  
Vol 28 (8-9) ◽  
pp. 191-194 ◽  
Author(s):  
S. L. Lo ◽  
L. J. Huang
Keyword(s):  
Heavy Metals ◽  
Sodium Tripolyphosphate ◽  
Equilibrium Concentration ◽  
Chelating Agent ◽  
Metal Species ◽  
Pollution Problem ◽  
Trisodium Salt ◽  
Major Factors ◽  
Apparent Equilibrium ◽  
Degradation Time

Sodium tripolyphosphate (STPP), which is widely used as a builder in synthetic detergents, was found as one of the major factors of eutrophication in rivers and lakes. Many countries have used nitrilotriacetate (NTA) in detergents to replace STPP, but it induced another pollution problem. Because NTA is an effective chelating agent, it will dissolve heavy metals from the sediments and affect the fate of metal species in rivers. The purpose of this study is to investigate the effect of the mobilization of heavy metals from sediments by NTA. The experimental results indicated that NTA increases the mobilization of heavy metals as the shaking time increases and reaches an apparent equilibrium concentration after 24–48 hours. Typical results show that using 20mg/l of NTA and shaking time of 6 days, the fraction mobilized is about 8 to 15% for Cu, 1 to 7% for Zn, 7 to 10% for Pb, and 7 to 30% for Cd. Hardness of the water affects the formation of heavy metal-NTA complexes significantly. Biodegradation of the trisodium salt of NTA starts after 6–9 days with degradation time of the metal-NTA complexes decreasing in the order of Cu > Cd > Zn > Pb > Ca.

An Insight into Oligopeptide Transporter 3 (OPT3) family proteins

2020 ◽  
Vol 27 ◽  
Author(s):  
Fırat Kurt
Keyword(s):  
Stress Responses ◽  
Chelating Agent ◽  
Biological Processes ◽  
Biotic And Abiotic Stress ◽  
Oligopeptide Transporter ◽  
Binding Residues ◽  
Fe Homeostasis ◽  
Proteins Interactions ◽  
Insight Into ◽  
Selection Of

: Oligopeptide transporter 3 (OPT3) proteins are one of the subsets of OPT clade, yet little is known about these transporters. Therefore, homolog OPT3 proteins in several plant species were investigated and characterized using bioinformatical tools. Motif and co-expression analyses showed that OPT3 proteins may be involved in both biotic and abiotic stress responses as well as growth and developmental processes. AtOPT3 usually seemed to take part in Fe homeostasis whereas ZmOPT3 putatively interacted with proteins involved in various biological processes from plant defense system to stress responses. Glutathione (GSH), as a putative alternative chelating agent, was used in the AtOPT3 and ZmOPT3 docking analyses to identify their putative binding residues. The information given in this study will contribute to the understanding of OPT3 proteins’ interactions in various pathways and to the selection of potential ligands for OPT3s.

A chelate-setting hydroxyapatite bone cement using gluconic acid as novel chelating agent

2021 ◽  
pp. 129874
Author(s):  
Yunpeng Nie ◽  
Tao Wang ◽  
Meng Wu ◽  
Xin Yang ◽  
Wenchao Wei ◽  
...  
Keyword(s):  
Bone Cement ◽  
Gluconic Acid ◽  
Chelating Agent

scholarly journals First insights into the archaeometric analysis of the Los Amores Mosaic in Cástulo (Linares, Spain): the Judgement of Paris

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Alberto Sánchez ◽  
José Tuñón ◽  
Manuel Montejo ◽  
Pilar Amate ◽  
Bautista Ceprián ◽  
...  
Keyword(s):  
Raw Materials ◽  
Principal Component ◽  
Soda Lime ◽  
Degradation Process ◽  
Lead Glass ◽  
Non Invasive ◽  
Stone Materials ◽  
Data Assessment ◽  
Siliciclastic Rocks ◽  
Judgment Of Paris

AbstractThis paper discusses results obtained from in situ analysis of the tesserae of the Roman mosaic of Los Amores (Cástulo site, Linares, Spain) dating back to the turn of the 1st to the 2nd century AD. Specifically, it focuses on the scene The Judgment of Paris. In view of the exceptional state of preservation of the mosaic, from which very few tesserae had fallen off, non-invasive methods with portable Micro Raman Spectroscopy (MRS) and hand-held X-ray fluorescence (hXRF) and data assessment by use of principal component analysis and binary representations were selected. The results obtained allow to evaluate both the analytical method and the portable equipment used, as well as to classify the raw materials, the colouring agents and the opacifiers used. MRS analysis proved crucial for the identification of stone tesserae (ironstones, carbonate and siliciclastic rocks) and for the identification of the type of glasses used (soda-lime-silicate and lead type glasses) based on the analysis of two detached tesserae. hXRF analysis of the glass tesserae identified both colouring agents (Co, Cu, Pb, Zn) and opacifiers (calcium antimonate). The data obtained lend themselves to an assessment of the degradation process that threaten the integrity of the mosaic. The identification of tessera made of specific stone materials (especially ironstone) and of lead glass tesserae suggest the existence of a mosaic workshop in the Upper Guadalquivir (Eastern Andalusia, Spain).

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