methods completely intelligible. The largest chapters are those dealing with paper and gas chromatography since these are the methods which have received the widest application and in which marked advances have been made in recent years. These sections are profusely illustrated with diagrams of the types of apparatus employed, and the descriptions are particularly detailed. A short section on Z...

methods completely intelligible. The largest chapters are those dealing with paper and gas chromatography since these are the methods which have received the widest application and in which marked advances have been made in recent years. These sections are profusely illustrated with diagrams of the types of apparatus employed, and the descriptions are particularly detailed. A short section on Z...

During a study of catalytic hydrodesulphurization of gas oils’ a method was needed not only for the determination of the distribution of sulphur compounds, but also, more importantly, for the determination of total suIphur content. Methods have been published for the determination of the distribution of sulpbur compounds in gas oils using gas chromatography (GC) with a coulometric detector’>3. ...

The study was undertaken to determine the purity level of eleven selected pesticides collected from different locations Bangladesh. In this study, Gas Chromatography coupled with Flame Ionization Detector (FID) and Electron Captured (ECD) used acephate, diazinon, dimethoate, chlorpyrifos, quinalphos, malathion, fenitrothion cypermethrin, fenvalerate. High Performance Liquid (HPLC 20A Prominence...

A gas chromatographic method is described for the direct quantitative determination of the partial pressure of halothane (or isoflurane) in blood as well as the blood-gas partition coefficient. A head space technique and a flame ionization detector were used. Standard blood was obtained by equilibrating patients' blood with known gas concentrations in a tonometer. Using an infra-red analyser to...

The Smith-Lemli-Opitz syndrome (SLOS), is an autosomal recessive disorder caused by a 7-dehydrocholesterol reductase deficiency, which is characterized by abnormally elevated amniotic fluid 7-DHC (7-dehydrocholesterol) concentrations. A GC/FID (gas-chromatography with a flame ionization detector) and GC/MS (gas-chromatography with a mass detector) method was optimized for the detection of chole...

This review describes the role of wood extractives, especially fatty and resin acids, in papermaking, as well as the importance of their removal from process waters. One of the main aims is also to illustrate versatile analysis methods for this purpose and highlight recent developments in corresponding applications. Most of the current methods require timeconsuming and laborious sample pretreat...

Essential oils from six different populations of Origanum vulgare subsp. hirtum were compared for their antibiofilm properties. The six essential oils (A to F) were characterized by a combination of gas chromatography with flame ionization detector and gas chromatography with mass spectrometer detector analyses. All oils showed weak activity against the planktonic form of a group of Staphylococ...

A planar high field asymmetric waveform ion mobility spectrometer (PFAIMS) with a micro-machined drift tube was characterized as a detector for capillary gas chromatography. The performance of the PFAIMS was compared directly to that of a flame ionization detector (FID) for the separation of a ketone mixture from butanone to decanone. Effluent from the column was continuously sampled by the det...