Methods: Volatile organic compounds were determined by headspace solid phase microextraction gas chromatography mass spectrometry (HS-SPME-GCMS). Factors investigated were the mass of equine faeces, type of SPME fibre coating, vial volume and storage conditions. Results: The resultant method was unique...
EPA TO-15 Determination Of Volatile Organic Compounds (VOCs) In Air Collected In Specially-Prepared Canisters And Analyzed By Gas Chromatography-ass Spectrometry (GCMS) 热度: Determination of Volatile Organic Compounds in Water by In-Tube Extraction Gas Chromatography Ion Trap Mass Spectrometry ...
1,2. MOFs are also recognized as effective sorbents for the pre-concentration, extraction, and detection of trace analytes3. The potential of MOFs as a sorbent material for sampling/trapping and as a stationary phase for chromatographic separation of alkane isomers, branched alkanes, benzene homolog...
Optionally, once the volatile matrix is evaporated, the sample vial is heated and/or the vacuum level is increased to transfer heavier target compounds to the sorbent. Multiple sampling devices can be extracted in parallel. The sample extraction device can be inserted into a thermal desorption ...
The best sampling conditions for the extraction were a 100-mL sampling vial subjected to a continuous flow of 100 mL/min for 60 min. The gas chromatographic analysis showed that the reproducibility was within acceptable ranges for all compounds (RSD=4.2417.26% by peak areas). In addition, ...
IMPROVED RECOVERY OF ORGANIC COMPOUNDS IN LIQUID SAMPLES USING FULL EVAPORATIVE VACUUM EXTRACTION, THERMAL DESORPTION, AND GCMS ANALYSISWhile sample extraction device including a sorbent is coupled to a sample vial containing a sample, a vacuum is drawn through the sample extraction device to evaporate...
(GC-MS). The specific VOCs that are unique toT. castaneumare selected as criteria for determining the presence ofT. castaneumin the granary. To obtain more specific VOCs, experiments were designed for the analysis ofT. castaneumsamples under different extraction times, two types of SPME fibers ...
4.3. Volatiles Collection and GCMS Analysis using HS-SPME 4.3.1. VOCs Extraction with HS-SPME The analysis of volatiles was focused on cabbage for infested and uninfested plants with the green peach aphid. Cabbages were placed individually into 4 L glass jars, and one plant in each jar was...
Volatile organic compounds (VOCs) are considered a major public health concern in industrial location areas. The presence of exposure to (VOCs) has raised concern regarding the health effects caused by chronic human exposure as this will increase cancer