Method and system for sampling and determining the presence of compounds in containers using a pulsed fluorescence detector

A method of sampling and determining the presence of certain substances in a container comprising the steps of:

• injecting fluid into an opening in said container in order to displace at least a portion of the contents thereof to form a sample cloud at regions outside of the container adjacent the opening thereof;
• evacuating a sample of said portion of the container contents so displaced by applying suction to the sample cloud in said regions outside of the container;
• splitting the sample evacuated into first and second portions;
• providing a chemiluminescence detector for analyzing the first portion of the sample to determine presence or absence of contaminants of nitrogen containing compounds;
• said chemiluminescence detector including,
• means for heating the first portion of the sample evacuated;
• and
• means for mixing the heated sample portion with ozone to cause a chemical reaction therewith in order to generate chemiluminescence of the reactants;
• optically analyzing said chemiluminescence to determine presence or absence of said certain substances;
• illuminating the second portion of the sample with radiant energy to generate fluorescence in the sample;
• and
• analyzing said fluorescence to determine presence or absence of aromatic hydrocarbon contaminants in the sample.