HYPHENATED TECHNOLOGY GUIDE Coupling, or hyphenating, two instruments can uncover results and insights not possible with individual techniques. The power of your analysis therefore becomes greater than the sum of its parts. • o you want to better understand how a material degrades D or what gases evolve when it burns? The technique used to answer these questions is called Evolved Gas Analysis. Our Thermogravimetric (TG) instruments can be coupled to Fourier Transform Infrared (FT-IR), Mass Spectrometry (MS), or Gas Chromatography/Mass Spectrometry (GC/MS) to provide you with greater knowledge....

TG-IR Figure 1. The TL8000 transfer line couples a Frontier FT-IR to a TGA. The combination of a Thermogravimetric Analyzer (TGA) with an Infrared Spectrometer (TG-IR) is the most common type of Evolved Gas Analysis (EGA) in use today. By heating a sample on the TGA, a sample will release volatile materials or generate combustion components as it burns. These gases are then transferred to the IR cell, where the components can be identified. Because of its ability to detect functional groups, IR analysis allows greater understanding of the processes seen in the TGA. • Automatic importation of...

Hiden Analytical MS Systems for TG-MS Figure 1. The Hiden Analytical HPR20 MS is shown connected to the PerkinElmer Pyris™ 1 TGA. Combining a Thermogravimetric Analyzer (TGA) with a Mass Spectrometer (MS) allows you to detect very low levels of impurities. By heating a sample on the TGA, it will release volatile materials or combustion components as it burns. These gases are then transferred to the MS for identification. The sensitivity of TG-MS is a powerful tool for quality control, safety, and product development. • STA6000 – DTA and TGA results simultaneously to 1000 °C • Pyris 1 TGA – our...

TG-MS Figure 1. The TG-MS systems, with Pyris 1 TGA, a TL2000 heated transfer line and a Clarus® SQ 8 MS. PerkinElmer’s extensive product range means we can supply you with a complete system with one party service and support as well as the expertise and knowledge to help you use it effectively. The PerkinElmer transfer lines allow you to couple our sensitive Pyris™ 1 TGA to the PerkinElmer Clarus® SQ 8 GC/MS. We offer two options for transfer lines: the lower cost, TL2000 that couples only to the Pyris 1 TGA and the TL8500, which couples to our full range of Thermogravimetric Analyzers (TGA)...

TG-GC/MS Figure 1. The Pyris 1 TGA coupled to the Clarus SQ 8 GC/MS gives the most sensitive method to identify evolved gases. Although TG-MS allows real-time monitoring, it can be confusing due to overlapping events and higher mass ions obscuring those of lower mass. By adding gas chromatography (GC) to the system, these events can be cleanly separated and very low levels of impurities detected. Heating a sample on the TGA causes a sample to release volatile materials or generate combustion components as it burns. These gases are then transferred to the GC, where the components can be collected...

Collecting the material on a GC column and eluting it gives the following chromatogram. Using the data from the MS to identify the peaks, the progression on acids can be detected easily in the offgas. These components can not be isolated by TG-IR or TG-MS due to their low levels and the complexity of Figure 3. GC/MS on the gases evolved between 8 and 9 minutes and collected on the head of a GC column gave the chromatography seen on the bottom of the graph. MS analysis suggest that 15.8 is the acetic acid, which is confirmed above by running a standard of acetic, formic, and propanoic acids.

TG-IR-GC/MS Figure 1. The TG-IR-GC/MS systems connects a TGA or STA to an FT-IR and then to a TG/MS is shown here using the TL9000 transfer line, Clarus GCMS, Frontier FT-IR, and Pyris 1 TGA. Hyphenating TG-IR-GC/MS is a powerful approach for analysis of an unknown mixture to determine its primary components and identify additives or contaminants. This information may be needed, for example, to evaluate a competitor’s product or to determine compliance with regulations. The PerkinElmer TL9000 transfer line is used to allow TG-IR-GC/ MS analysis on a sample by moving the off gases to the FT-IR...

0.960 U08464 TRI ETHYLENE GLYCOL, DI EE N7 tlfl T f 0.947 U08716 TEREPHTHALIC ACID, ISOPROPYL METHYL ESTER 0.939 U08714 TEREPHTHALIC fiCID, ETHVL METHYL ESTER 0.936 U08715 TEREPHTHflLIC ACID, METHYL PROPYL ESTER 0.905 U09077 PTOLUIC ACID, A, A-DIBROMO-, ETHYL ESTER 0.890 U06254 BENZOIC ftCID, 4, 4PR-METHYLENEDI-, DIMETHYL ESTER 0.889 U05934 BENZOIC ACID, PISOTHIOCYANATO-, ETHYL ESTER 0.886 U06255 BENZOIC fiCID, 4,4PR-TRIMETHYLENE- DI-, DIMETHYL ESTER 0.884 U06256 BENZOIC ACID, 4,4PR-TETRflMETHYLENE- DI-, DIMETHYL ESTER 0.879 U06253 BIPHENYLDICflBBOXYLIC ACID, 4.4PR-, DIBOTYL ESTER 0.877 U07043...

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