Signal-to-noise ratio and detection

In spite of these advantages, CS2 is not suitable for ECD detectors and it is a highly toxic solvent. In trace analysis of BTEX from air samples using low pressure gas chromatography, " dichloromethane was preferred as extracting solvent from a Radiello charcoal tube in spite of the coelution with benzene, because the extensive carbon disulfide peak tailing resulted in a poor signal to noise ratio and detection limits. 

Introduction of gaseous samples into the plasma offers several advantages over liquid aerosol introduction. The transport efficiency for introduction of gases approaches 100%, whereas in pneumatic nebulization more than 95% of the sample solution is discarded. When more analyte is transported into the plasma, improved signal-to-noise ratios and detection limits may be obtained. 

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