Heavy-metal poisoning

Feed Ga.s Purifica.tion. Because nickel-based reforming catalysts are quite sensitive to sulfur, halogen, and heavy metal poisons which may be found ia natural gas, a feedstock purification system is normally required. Sulfur compounds, ia both organic and inorganic forms, are the most common... 

Germanium and Sn are non-toxic (like C and Si). Lead is now recognized as a heavy-metal poison it acts by complexing with oxo-groups... 

Therapeutic Function Antidote in heavy metal poisoning Chemical Name N-(2-Mercapto-1-oxopropyl)glycine Common Name Mercamidum... 

Propane-1,2-diol, 3-mercapto-metal complexes, 2,804 Propan-l-ol, 2-amino-2-methyl-copper(II) complexes, 2,795 Propan-l-ol, 2,3-dimercapto-chelating agent heavy metal poisoning, 6,767 Propan-l-ol, 3-(methylamino)-copper(II) complexes, 2,795 Propan-2-ol... 

Ultraviolet spectroscopy metal in water complexes, 2, 309 redox potentials and, 1,498 Ultraviolet-visible spectroscopy, 1, 243 Umbellicomplexone metallofluorescent indicator, 1. 558 Undecametallic complexes, 1, 167 Uni thiol chelating agent heavy metal poisoning, 6. 767 Unsaturated compounds hydrogenation... 

Use antidote (heavy metal poisonings), antirheumatic (PCA and Morbus Wilson)... 

Benfey, Otto Th. Spinach as an alchemical antidote to heavy metal poisoning. Kagakushi J Japanese Soc Hist Chem 15 (1981) 8-12. 

EDTA salts are used for the treatment of heavy metal poisoning. Roosels and Vanderkeel142) were able to extract lead from urine in the presence of EDTA with dithizone by adding calcium to presumably release the lead from EDTA. In view of the fact that the formation constant of the lead-EDTA chelate is 20,000,000 times larger than that of the corresponding calcium chelate, it is doubtful that the calcium actually releases the EDTA from the lead. 

The renal tubular dysfunction of galactosemia is very similar to that caused by, e.g., heavy metal poisoning in both cases it seems likely that the inhibition of enzyme systems prevents the cells of the renal tubule... 

Heavy Metal Poisoning The Involvement of Lipoic Acid... 

Hu, H. (2001). Heavy metals poisoning, in, Fbarrison s Principles of Internal Medicine, 14th ed., Lublin, Czelej, 3861-3868. 

Another familiar historical case of heavy metal poisoning occurred in the mid-19th century, when hatters used a solution of mercury(II) nitrate to help shape the hats they made. When the mercury was inhaled or ingested, it caused damage to a hatter s nervous system frequently mental disorders resulted. Thus originated the expression "mad as a hatter."... 

Table 22.1 Changes in biochemical parameters of blood, liver and cytolytic enzyme activity caused by heavy metal poisoning and after combined therapy course...

Zhu Sha (Cinnabaris) is prescribed in the source book for this formula. It was used to calm the mind and reduce heat in ancient times. As a poisonous heavy metal, its use is now forbidden in many countries. However, it can be used in a very small dosage as a coating for herbal pills, as in this formula. 

I heavy metal ions with electrostatic interactions yO- and are used as antidotes in heavy metal poisoning (and I though all I had to do was Q turn off the radio ). 

Other factors indicated m the data of Tables 1 and 2 include Pour Point—defined as the lowest temperature at which the material will pour and a function of the composition of the oil in terms of waxiness and bitumen content Salt Content—which is not confined to sodium chloride, but usually is interpreted in terms of NaCl Salt is undesirable because of the tendency to obstruct fluid flow, to accumulate as an undesirable constituent of residual oils and asphalts, and a tendency of certain salt compounds to decompose when heated, causing corrosion of refining equipment Metals Content—heavy metals, such as vanadium, nickel, and iron, tend to accumulate in the heavier gas oil and residuum fractions where the metals may interfere with refining operations, particularly by poisoning catalysts. The heavy metals also contribute to the formation of deposits on heated surfaces in furnaces and boiler fireboxes, leading to permanent failure of equrpment, interference with heat-transfer efficiency, and increased maintenance. 

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