spectroscopic examination वाक्य

Spectroscopic examination revealed that it was mostly tar and nicotine from tobacco smoke.
Mary Sherrill's contribution to the group was the synthesis and purification of organic compounds, in preparation for spectroscopic examination.
As an experimentalist, he is a most natural subject for spectroscopic examination, as practiced by a floating body of dedicated Nabokovians.
For the mass-spectroscopic examination involved the help of Dr G . Spiteller ( Institute of Organic Chemistry, Vienna University ) was enlisted.