Table of Contents
Why argon gas is used in ICP plasma?
Compared to atomic absorption spectrophotometers, in which the excitation temperature of air-acetylene flame measures 2000 to 3000 K, the excitation temperature of argon ICP is 5000 to 7000 K, which efficiently excites many elements. Also, using inert gas (argon) makes oxides and nitrides harder to be generated.
What is the purpose of argon gas?
Argon is used popularly within welding and casting industries, especially in the making of specialty alloys and manufacturing titanium. It is also used as a shield gas during arc welding, seeing as it protects the metal that’s being worked on from oxygen.
Why is argon used in reactions?
Argon is used to provide an inert blanket for certain industrial operations. An inert blanket of gas prevents any chemicals in the operation from reacting with oxygen and other substances present in air. Argon is also used in making “neon” lamps and in lasers.
Why would you use argon instead of air?
Because argon occurs in the air naturally, it is easily obtained and inexpensive compared to other noble gases, making it the most commonly used inert gas. As a stable gas with low reaction rate, argon is used in many commercial and industrial processes with high-temperatures to help dormant substances become reactive.
How does argon plasma work?
The probe is placed at a distance and delivers a jet of ionized gas that is directed at the bleeding lesion or tumor. Argon gas is emitted then ionized by an electrical current that results in the coagulation of the lesion or tumor, which stops the bleeding.
Which gas is used for creating plasma in ICP-AES?
Argon gas
The ICP-AES is composed of two parts: the ICP and the optical spectrometer. The ICP torch consists of 3 concentric quartz glass tubes. The output or “work” coil of the radio frequency (RF) generator surrounds part of this quartz torch. Argon gas is typically used to create the plasma.
Why is argon used in fluorescent tubes?
Argon gas is used in fluorescent and incandescent light bulbs to stop the oxygen in the light bulbs from corroding the hot tungsten filament. The presence of argon in light bulbs prevents the evaporation of the tungsten filament, which results in increased light bulb life.
Why is argon in the atmosphere?
Like other noble gases, it is stable and resists combining with other elements. Once it gets in the atmosphere it is difficult to get rid of. Another reason it is found in the atmosphere is because it is relatively heavy. Argon is heavy enough that it tends to not be lost to space like for example Helium is lost.
Why is argon a stable element?
The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert. Argon atoms do not combine with one another; nor have they been observed to combine chemically with atoms of any other element.
How does argon react?
Argon is a noble gas and it does not react with any other element. It does not even react at high temperatures or under any other special conditions. One succeeded in producing only one argon compound that was very instable, under extremely low temperatures. Consequently, argon does not react with water.
Does argon float in air?
Water has a density of 1.0 g/mL which is equal to 1000 g/L. So argon is definitely less dense than water!) So they would float, but you would have to put them into the water as bubbles. If you meant to ask what elements would float in air, the density of air is about 1.2 g/L.
What is argon in?
Argon is an inert, colorless and odorless element — one of the Noble gases. Used in fluorescent lights and in welding, this element gets its name from the Greek word for “lazy,” an homage to how little it reacts to form compounds.