Answer All Blanks (Analytical Chemistry): Xe lamp is commonly used as a light sources in ______________...

Answer All Blanks (Analytical Chemistry):

Xe lamp is commonly used as a light sources in ______________ spectrometer, and only _______________ light source is used in atomic emission spectroscopy.

A solution holder (i.e. cuvette) made of regular glass or plastic (such as polycarbonate, used commonly as a lens material in glasses) should not be used in UV-Vis spectroscopic measurements, because______________________________.

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Expert Solution

Xe lamp is commonly used as a light sources in (UV-Visible) spectrometer, and only flame light source is used in atomic emission spectroscopy.

A solution holder (i.e. cuvette) made of regular glass or plastic (such as polycarbonate, used commonly as a lens material in glasses) should not be used in UV-Vis spectroscopic measurements,

because their absorbance is very high for shorter wavelengths ,320 to 280 nm range as required for UV-Visible spectrophotometry

Answer :Xenon lamp emits entire UV and visible wavelengths and its energy is high ,reaches a steady state readily.

Flame or spark is used to heat up to excite the atoms of sample ,which then emits wavelength of specific wavelengths that can be detected and the sample identified.

A solution holder (i.e. cuvette) made of quartz is used for UV as it can withstand the UV wavelength and optical glass is used for visible light range from 350 -2500nm

queen_honey_blossom answered 1 year ago

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