Intermittent introduction of sample

This mode of sample introduction is used when dealing with distinct samples whose successive analysis requires two major demands to be met  

The inherent features of these methods make them particularly suitable for clinical analyses, with either electrical or optical detection of the analytical signal, which is measured as such (non-kinetlc methods) or monitored as a function of time (kinetic methods). Some representative examples are commented on below. 

H+ and Cl by means of serial potentiometric detectors, (b) Enlarged section of the valve used for selection of sample and standards. (Reproduced from [7] with permission of the American Chemical 

A relatively simple configuration that can be Included in this section was 

The same type of membrane and a similar configuration are used In the fluorimetric determination of ammonia in water based on the reaction of this base with o-phthalaldehyde (OPA) in the presence of alkaline 2-mercaptoethanol (MCE) to yield a fluorescent adduct [13]. In this case, the merging of the 

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