The role of Platinum in modern industry

A Metrohm UK product story
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Edited by the Processingtalk editorial team Jun 23, 2004

Platinum plays a huge role in modern industry - notably in electrochemical and catalytic systems: this article reviews the origins, uses, and detection methods available

Platinum plays a huge role in modern industry - notably in electrochemical and catalytic systems, and is currently being used in fuel and electrolytic cells, pharmaceutical production, petro-chemistry, laboratory equipment, electrical contacts, dentistry and anti-pollution devices in the automotive and water-treatment sectors, as well as surgical and astronomical devices.

Naturally-occurring platinum and platinum-rich alloys have been known for a long time and although the metal was used by pre-Columbian Indians, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger as a mysterious metal found in Central American mines between Panama and Mexico "up until now impossible to melt by any of the Spanish arts".

Platinum was discovered by the Spanish astronomer Antonio de Ulloa in 1735 as platina ("little silver") del pinto, the unworkable metal found with gold in Columbia, it was also regarded as an impurity in the silver being mined and was often discarded.

Articles

The role of Platinum in modern industry

A Metrohm UK product story
More from this company More from this category
Edited by the Processingtalk editorial team Jun 23, 2004

Platinum plays a huge role in modern industry - notably in electrochemical and catalytic systems: this article reviews the origins, uses, and detection methods available

Platinum plays a huge role in modern industry - notably in electrochemical and catalytic systems, and is currently being used in fuel and electrolytic cells, pharmaceutical production, petro-chemistry, laboratory equipment, electrical contacts, dentistry and anti-pollution devices in the automotive and water-treatment sectors, as well as surgical and astronomical devices.

Naturally-occurring platinum and platinum-rich alloys have been known for a long time and although the metal was used by pre-Columbian Indians, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger as a mysterious metal found in Central American mines between Panama and Mexico "up until now impossible to melt by any of the Spanish arts".

Platinum was discovered by the Spanish astronomer Antonio de Ulloa in 1735 as platina ("little silver") del pinto, the unworkable metal found with gold in Columbia, it was also regarded as an impurity in the silver being mined and was often discarded.

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A test method for the determination of the liquid efflux rate (tightness) of Metrohm An- tidiffusion Tips via STAT Titration

Summary
The design of the Metrohm antidiffusion tips with the antidiffusion valve makes it possibleto do very accurate dosing. The principle is a ‘pressure valve’ which opens synchronously to the movement of the piston from the Dosing unit, depending on the pressure in the tubing, and relocks when the pressure in the tubing drops. This principle makes sure, that the volume
stream stops abrupt after stop of the piston movement and no formation of drops and no leakage of titrant occurs afterwards. If this mechanism doesn’t work properly then it is
possible that after a dosing step a volume different from the documented leaks from the anti diffusion tip. This ‘leakage’ may furthermore cause a delayed stabi-
lization of the measured signal and may hence create erroneous, inaccurate results.
Metrohm recommends the use of the titrimetric volume test method described below as the Standard Operating Procedure for validating Metrohm antidiffu-
sion tips (6.1543.200, 6.1543.130 & 6.1543.140, each with 62726.090 antidiffusion valve).
This titrimetric volume test can be used for the following purposes:
• Quality assurance by the manufacturer
• Quality assurance of analytical or other measuring systems by the user
The described method is not an official reference method.


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