0
this technique is used for the determination of sodium potassium and lithium (in case of Lithium therapy) in biological specimens received in laboratories
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why cant the concentration of iron be detected by flame emission photometry?
Flame photometry can be used for the measurement of elements which can easily be excited like Ca, K, Na, Ba, Cu etc. However due to low temperature of flame the elements like Fe can not be excited and hence not measured using Flame photometry.
What would happen if a drop of a clear colorless solution was held in a flame?
NOTHING 2. If the fluid contained some element, e.g. sodium or calcium, then the flame would show the colour appropriate to that element. Flame photometry relies on this principle.
When was caesium found?
Caesium was first identified in 1860 by Robert Bunsen (of Bunsen burner fame), and Gustav Kirchhoff (of electrical circuits fame), in the course of studying flame photometry. [This same pair also discovered rubidium.]Caesium was named after the Latin word for blue, its flame colour. This metal melts below body temperature at 28.4oC. It also has some nasty radionuclides.
What is the colour of flame given by 'K' salts?
Potassium containing salts (K+) emit a lilac color with a peak emission wavelength of 766.5 nm. Intensity is quite low, compared to the bright orange flame colour caused by traces of sodium often present in K samples. Even from a glass rod the orange Na-line flame color is exuberant.
Can a flame rod burn out?
A flame rod is a simple piece of heat-resistant metal (nichrome, inconel, etc) in contact with a flame. A flame consists of ionized particles undergoing chemical reactions and therefore is conductive. The flame rod takes advantage of that fact. The rod has a small potential on it and when the flame touches it, a small current flows from the rod through the flame to ground. This current is detected and uses to "prove" the flame. A flame acts as a diode but I don't recall the direction of electron flow and that effect isn't used in this application. The rod's response is instantaneous. That, and there being nothing to degrade, are the two main benefits. The major detraction is that active, powered electronics are needed to process the signal. All pilotless gas systems use flame rods. If the ignition system is by spark then the flame rod and the ignition rod may be the same. Other systems use separate spark and flame rods. Yet other ignition systems such as the hot body ignitor don't involve the use of sparks at all. A similar application is the pilot light sustainer. This little gadget detects when the pilot light goes out and sparks to relight it.
Why cant the concentration of iron be detected by flame emission photometry?
Flame photometry can be used for the measurement of elements which can easily be excited like Ca, K, Na, Ba, Cu etc. However due to low temperature of flame the elements like Fe can not be excited and hence not measured using Flame photometry.
What is flame photometry?
flame photometry involves the determination of concentration of alkali and alkaline earth metals present in a sample based on the radiation emitted by it when the sample is atomized to a flame
How do you test for potassium ions in water?
Two common methods are atomic absorption spectrophotometry and flame photometry.
What has the author Roland Herrmann written?
Roland. Herrmann has written: 'Flammenphotometrie' -- subject(s): Flame photometry
Why the sea water is diluted in flame photometry?
Because the sodium concentration is too high, out of the determination range of the instrument.
How does lithium serve as an ionization suppressant in flame photometry?
Berry, Chappell & Barnes (1946) showed that, in estimating sodium and potassium by flame photometry, there were definite improvements in precision and accuracy when lithium was added to the samples as an internal standard (compare Spencer, 1950; Bernstein, 1952). The lithium internal standard signal reduces fluctuation in flame conditions, drift, and dilution errors—ensures reproducible results and precise measurements. The fully automatic ignition and flame optimization sequences reduce set up and calibration time. An automatic gas shutoff mechanism activates if the flame is accidentally extinguished. The monitoring and control software make operation simple and allow measurements only after blanking and calibration.
What would happen if a drop of a clear colorless solution was held in a flame?
NOTHING 2. If the fluid contained some element, e.g. sodium or calcium, then the flame would show the colour appropriate to that element. Flame photometry relies on this principle.
What analytical instruments can be used to identify the metal in a salt such as calcium carbonate?
Examples: emission spectrometry, flame photometry, atomic absorption, etc.
Industrial applications of flame photometry?
· Analysis of industrial water, natural water for determining elements responsible for hard water (magnesium, barium, calcium etc.) is standard procedure in many laboratories. · In glass industry, flame photometry is used in determining of sodium, potassium, boron, lithium etc. · In cement industry, this method is used in estimation of sodium, potassium, calcium, magnesium, manganese, as well as lithium. · Analysis of ash by flame photometer is routinely carried out in various industries for estimating alkali and alkaline earth metals as their oxides. · Flame photometry is extensively used in estimation of alkali-alkaline earth metals as well as other metals present in metallurgical products, catalysts, alloys etc. · Flame photometry has also been used in determination of certain metals like lead, manganese, in petroleum products like gasoline, lubricating oils and organic solvents.
How do you disprove the presence of sodium sulphate in a compound. Any tests or procedures or methods?
The sulfate ion is precipitated with barium chloride.The presence of sodium can be tested by flame photometry.
What is flame photometry and give its principle and block diagram and instrument and method and application and brief explian?
Flame photometry is used in water analysis for determining the concentration of alkali metals. A liquid sample to be analysed is sprayed into a flame where the water evaporates, leaving the inorganic salts behind as a minute particles. The salts decompose into constituent atoms and become vaporised. The vapours containing the metal atoms are excited by the thermal energy of the flame and this causes the electrons to be raised to a higher energy level and they give off discrete amounts of radiant energy. The emitted radiation is passed through a prism which separates the various wavelengths so that the desired region can be isolated. And then a photocell and an amplifier is used to measure the intensity of the isolated radiation. The emission spectrum for each metal is different and its intensity depends on the concentration of atoms in the flame.
Why transition metal can not be determined by a flame photometry?
Since the temperature isn't high enough to excite transition metals, the method is selective toward detection of alkali and alkali earth metals.
