Purge and capture instrumentNext, Xiaobian will introduce you in detail the effect and use method of purging and collecting instrument. I hope it can bring some help to many users who do not know how to use it or do not know its specific function. Let's see!

Theoretically speaking, the collector is a dynamic headspace sampler technology, which uses mobile gas to "purge" the chemical composition of volatiles, and then uses the purging collector to adhere the blown organic compounds together, and then sends the sample to the meteorological chromatograph for in-depth analysis by thermal cracking suction.

Fundamentals of 1.

It belongs to the scope of combined purification of temperament, which is used for N2, nitrogen or other rare gases to extract dna from the test sample, so that the gas continues to purify the volatile components in the absorbent or cold trap according to the test product, and then carries out in-depth analysis and measurement, so it is an unbalanced continuous purification.

The operation process of the purging trap is that N2, nitrogen or other rare gases are purged according to the liquid or solid of the corresponding user, the volatile components of trace elements that need to be analyzed in depth are blown out, the absorbent in the cold trap is adhered, and then heated and adsorbed to the software of the meteorological chromatography system for in-depth analysis. This is mainly because the gas purging destroys the gas in the closed container. The stable balance of the two-phase liquid, so that the volatile components from the high-efficiency liquid phase into the temperament of the joint, is blown out,

2. operation process

(1) Add the corresponding number of samples in the purge and trap instrument.

(2) Silicone rubber will enter, carbon molecular sieve and activated carbon dry manic clean purge gas. Enter the purge bottle with the corresponding flow rate to remove volatile components.

(3) Preserve the blown ingredients in an absorbent or cold trap.

(4) Open the six-way valve and place the adhesion tube in the in-depth analysis flow path of the gas chromatograph.

(5) Heat the adhesive tube to do the adsorption work, and the volatile components are blown out and enter the deep analysis column.

(6) Do a good job of chromatographic analysis.