Results 251 to 260 of about 64,153 (306)

Pervaporation as an Alternative to Headspace

Analytical Chemistry, 1997
The use of pervaporation as an alternative to headspace is proposed. The analytical system involves the speciation of organomercury compounds in solid samples using pervaporation, which has been coupled for the first time to gas chromatography. The speciation of mercury as Me(2)Hg, Et(2)Hg, and MeHgCl has been carried out without any derivatization of ...
D W, Bryce, A, Izquierdo, M D, Luque de Castro   +2 more
openaire   +2 more sources

Headspace Constituents of Opium

Planta Medica, 1994
The headspace of medicinal opium (Ph. Ned. 8) was analyzed by means of GC-FID, (+EI)-GC-MS (low and high resolution), and GC-FTIR. After olfactoric evaluation of the headspace sample by professional perfumers by the use of the GC-sniffing technique and after correlation tests with trained police dogs, more than 70 components were identified.
G, Buchbauer, A, Nikiforov, B, Remberg
openaire   +2 more sources

TATP Headspace Study

Propellants, Explosives, Pyrotechnics, 2021
AbstractCompositional analysis of crude and recrystallized TATP in solution and the headspace above solid material did not identify acetone presence in any sample. Acetone was detected in trace levels in crude TATP samples heated to 65 °C for 42 hours. The concentration of which was observed to decrease over time.
Jonathan R. Stromberg, Mairym M. Castillo Rolon   +1 more
openaire   +1 more source

Headspace

Emergency Nurse, 2017
Headspace is designed to teach users meditation and mindfulness, which has been recommended by the NHS and National Institute for Health and Care Excellence to help mental well-being.
openaire   +2 more sources

In-vessel headspace liquid-phase microextraction

Analytica Chimica Acta, 2021
A new mode of headspace liquid-phase microextraction termed in-vessel headspace liquid-phase microextraction (IV-HS-LPME) has been developed. A plastic vessel was used as a holder for an extraction phase. Problems with drop stability, limitations in the stirring speed, and too little volume of the acceptor phase have been completely eliminated.
Aimad-Eddine Tamen, Andriy Vishnikin
openaire   +2 more sources

Headspace: Architectural Space in the Brain

Contemporary Theatre Review, 2010
I remember hearing the sounds of footsteps going down concrete steps and then a metal gate slamming.
openaire   +2 more sources

Developments in multiple headspace extraction

Journal of Biochemical and Biophysical Methods, 2007
This paper reviews new developments in multiple headspace extraction (MHE), especially its combination with two miniaturized extraction techniques, solid-phase microextraction (SPME) and single-drop microextraction (SDME). The combination of the techniques broadens the applicability of SPME and SDME to quantitative determination of analytes in complex ...
openaire   +2 more sources

An accessory for headspace analysis

Chromatographia, 1970
If a laboratory has to deal regularly with large numbers of samples which have to be analyzed by the headspace method, this task can be taken over by commercial, fully automated instruments (such as the Perkin-Elmer Model F 40). The situation is different if such analyses occur only occasionally.
openaire   +1 more source

Headspace

TSQ: Transgender Studies Quarterly, 2020
openaire   +2 more sources

Headspace App

Headspace App was an exhibition of seventeen works by Farquhar at Cabinet Gallery, London, from 1 September – 10 November 2018. It consisted of a collection of mixed media works and adapted found objects inspired by Farquhar’s daily life in Edinburgh, such as the commute on public transport, the use of meditation apps, visits to the municipial sauna ...
openaire   +1 more source