Chelating agents

2.2.3 Definition of Chelating Ligand EDTA From the above discussion, it can be concluded that chelating ligand EDTA is a process of reversible bond formation of a ligand that serves as chelating ( chelting agent or Chelator) that exist within the compound of EDTA. Basically, EDTA combines with some specific ion, so it causes the functions of EDTA as chelator. When the functions of EDTA as chelator, EDTA is a liquid ( solution) 2.3 Volcanic Ash Volcanic ash or sand is volcanic material debris…

Lead concentrations can be measured in various body tissues or by measuring the biomarkers of the toxic effects of lead. The concentration of lead in the body has been measured in blood, bone, nails, hair, teeth, urine, faces and saliva for screening and diagnostic purposes. In all samples, specimen collection, storage and processing must be meticulously performed to avoid contamination of the samples with lead in the surrounding environment. Teeth, nail and bone reflect long term exposure to…

lead from gasoline, and proposing stricter laws on imported toys containing lead, heavy metal poisoning still exists. Chelation therapy is still the preferred medical treatment for such heavy metal intoxication [1]. Chelation therapy involves chelating agents binding to toxic metal ions to form complex structures, which can then be excreted from the body [1]. Chelation therapy is grounded in coordination chemistry, in which lone electron pairs…

decalcifier are used for urgency case to accelerate the speed of decalcifier. For example, hydrochloric acid (HCl) is strong acid which act as rapid decalcifier with extremely low pH. It can rapidly removed inorganic calcium from the bone. Some chelating reagent like EDTA (at pH 7.0 - 7.4) is neutral hence it requires longer time to carry out the process. 2. Degree of mineralization Some of the sample like mucopolysaccharides in new bone, calcifying cartilage or glycogen in some early…

Society as we know it today has become dependent on the use of synthetic materials, natural materials that have gone through a chemical change to become man-made, therefore, synthetic. Some synthetic materials are easier to create than others, these materials range from plastic, to nylon, to cocaine, to medicine, and much more. Synthetic materials play a large role in our lives and they surround us everyday, although, it hasn't always been this way. Earth and humans aren't always accustomed to…

3.4. Electrochemical performance of Li1.2Ni0.13Co0.13Mn0.54O2 3.4.1. Electrochemical charge/discharge behavior Figure 9 (a-d) shows the charge/discharge profiles of four Li1.2Ni0.13Co0.13Mn0.54O2 electrodes (EV, CA/EDTA, CA and EDTA) cycled at 0.1C between 2.0 and 4.8 V, while Fig. 9(e) depicts the initial charge/discharge profiles of four Li1.2Ni0.13Co0.13Mn0.54O2 electrodes under the same conditions. All the initial charge/discharge profiles show the same general features. All the initial…

Rare earths are very significant when it comes to the development and use of technical equipment as they can be very important to the performance of the unit. An example of an everyday piece of technology that uses rare earths is the IPhone. Apple has said that the IPhone uses eight rare earths, from everything from the colored screen, to speakers, to the miniature circuits inside the phone. Although the amount of rare earths in the phone is very little, the demand for rare earths will continue…

eliminating metal catalysts in the oxidation step, minimizing cyclohexane conversion, passivating reactor walls, lowering the reaction temperature, adding water to the reaction mix to extract acid catalysts from the cyclohexane phase, and adding metal-chelating agents to the reaction…

as, physico-chemical form of radionuclide, plant species, internal translocation mechanisms within the plant, soil characteristics (pH value), isotopic-binding mechanism of soil, fertilizers (potassium or calcium nitrates, phosphate, organic), chelating agents (organic compounds), distribution of radionuclides in soil and environmental conditions [Martinez-Aguirre & Perianez, 1998; Foth,1978; Abdulaziz Alharbi & A. El-Taher,…

was immersed in 0.85% solution of Triton X-100 at 40 ⁰C for 10 min, followed by soaking in sodium hydroxide (NaOH) solution at varies concentrations (1, 2 4, 6 and 8%) at 100 ⁰C for 60 min. For enzymatic retting, the fiber was treated with chelating agent, enthylenediamine-tetraacetic acid, then immersed in 0.85% solution of Triton X-100 at 40 ⁰C for 10 min, followed by adding of pectinase at different concentrations (0.25, 0.5, 1.0 and 3%) at 50 ⁰C for an hour. They concluded all treatment…