#119 - Analysis of Freon® and other Halogenated Solvents
Manufacturers of chlorinated solvents would use this analysis for quality control checks of purity when unloading the solvents from tank trucks. Five different halogenated products were separated isothermally on the Series 580 TCD or Series 600 Gas Chromatograph with good resolution.
#125 - Water Content of High Purity Solvents
This analysis is useful to anyone desiring to know the water content of solvents which are being used in applications requiring high purity solvents.
#130 - Determination of Benzene Levels
Run exposure limit for benzene requires employers to limit the amount of benzene exposed in an atmosphere to a maximum of 1 ppm over and eight hour period. There is a ceiling limit of 5 ppm for any 15 minute period.
The recommended NIOSH method utilizes charcoal tubes for collection of solvent vapor. The tubes are used with a portable personal pump to collect solvent vapors from the air. The sample is then injected into the Series 580 FID GC. The chromatograph performs the analysis of 1 ppm benzene within three minutes.
#133 - Analysis of Aliphatic and Aromatic Hydrocarbons in Admixture
The fields of interest for this analysis are those of solvent emissions (i.e., gas phase analysis) e.g., auto exhaust analysis, painting facilities, etc., and analysis of liquid phase solvent mixture, e.g., pollutant analysis, synthetic fuel programs, industries employing mixed solvents in product bases (paints, cosmetics).
#134 - Analysis of Methyl Esters for Quality Control
This application is to demonstrate precision of retention time data for repetitive samples run on our Series 600 temperature programmable gas chromatograph in a quality control laboratory.
#135 - Analysis of Phthalate Esters
Wastewater analysis, aquatic toxicological analysis, analyses related to human health protection, plastic industries employing these substances as plasticizers and industries employing phthalate esters as pesticide carriers, in fragrances and cosmetics and in munition production.
#143 - Solvent Blend Analysis on a Megabore Capillary Column Using a Micro-TCD
The use of 0.53 mm i.d. fused silica columns with a thick film liquid base has great advantages over traditional packed columns. The chromatography is faster and better due to the inherent column inertness. This demonstration illustrates a mixture containing polar and non-polar solvents including water, an important component detected by a thermal conductivity detector (TCD). GOW-MAC has developed a low volume TCD for use with the large bore/thick film silica columns.
#146 - Analysis of Alcohols on Megabore Capillary Columns
The Series 580 TCD Isothermal Gas Chromatograph can be successfully used in analyzing methanol,ethanol, isopropanol, t-butanol, propanol, and butanol utilizing wide bore capillary columns.
#147 - Analysis of Ethylene Glycols on Megabore Capillary Columns
The use of 0.53 mm i.d. fused silica columns with a thick film liquid phase has great advantages for analysis of ethylene glycols. Glycols generally are difficult to separate on packed columns because they are readily absorbed by the column support. The inertness of the fused silica column reduces tailing and gives better resolution in addition to shorter retention times.
#148 - Analysis of N/P Pesticides on Megabore Capillary Columns
The Series 580 Isothermal GC with Thermionic Ionization Detector (TID) can successfully be used in analyzing N/P Pesticides utilizing wide bore capillary columns. A series of calibration standards were made in concentrations ranging from 0.9 to 18 ppm containing the following N/P pesticides: phosdrin & thimet, diazinon, disulfoton, merphos, dimethoate, malathion & DEF, parathion, trithion, and ethion.
#150 - Analysis of Alcohols on Megabore Capillary Columns Using a Micro-TCD
The GOW-MAC Series 600 TCD Programmable Gas Chromatograph can easily be used in separating methanol, ethanol, isopropanol, n-propanol, and butanol utilizing the GOW-MAC #10-955 Micro-TCD, in less than 1 minute.