Abstract. Secondary organic aerosol (SOA) was generated by irradiating 1,3-butadiene (13BD) in the presence of H2O2 or NOx. Experiments were conducted in a smog chamber operated in either flow or batch mode. A filter/denuder sampling system was used for simultaneously collecting gasand particle-phase products. The chemical composition of the gas phase and SOA was analyzed using derivativebased ...

Paracetamol is a drug containing non opiod analgesics and non-steroidal antipyretics (AINS). This journal review aims to analyze find out the content of paracetamol (acetaminophen) can be detected in biological samples hair patient undergoing treatment therapy using gas chromatography-Mass spectrometry (GC-MS) method knowing how much influence length has on concentrations. Biological human were...

Oxidation of DNA due to exposure reactive oxygen species (ROS) is a major source damage. ROS induced damage plays an important role in some diseases such as various cancers, aging and neurodegenerative diseases. The detection oxidation products assessing the mutagenicity potential specific exposure. GC–MS/MS method was developed for ultrasensitive determination individual products. validation r...

The mangrove fungus Trichoderma atroviride was found to be tolerant the heavy metal cadmium and it is of high interest profile its metabolites gain insight into response toxicity. This study aimed investigate effect derivatization agents on number types present in cadmium-tolerant T. atroviride, detected using GC-MS analysis. intracellular extracellular treated with for ten days were derivatize...

MDMA (3,4-methylenedioximet amphetamine) is a semisynthetic compound derived from stimulant type amphetamine (ATS) which works by triggering the release of serotonin. Paracetamol (acetaminophen) one drug that has an analgesic-antipyretic effect. analysis requires relatively fast method, so TLC method was chosen. The identification test carried out using 3 chromatographic systems, namely methano...

Biological markers for assessment of exposure to a variety of environmental carcinogens has been widely applied in both basic as well as clinical research. Exposure to tobacco smoke presents an ideal environment with which to develop, characterize, and refine biological markers, especially of those carcinogens found in tobacco. In the present study, a sensitive gas chromatography/mass spectrome...

The concentrations of seventeen endocrine disruptor compounds (EDCs) that included oestrogens, phytoestrogens, sitosterol, and banned industrial pollutants were investigated at ten sites the Douro River estuary. Surface waters collected during 2019. After evaluating physicochemical data (ammonia, nitrates, nitrites phosphates), filtrated submitted to solid-phase extraction (SPE) extract pre-con...

The simultaneous determination of trace amounts of endocrine disruptors such as bisphenol A (BPA) and its monochloro, dichloro, trichloro and tetrachloro derivatives in wastewater has been developed using gas chromatography-mass spectrometry (GC-MS). Compounds were previously extracted from the aqueous samples using a liquid-liquid extraction procedure with a mixture of dichloromethane:carbon t...

A method for identification and quantitative determination of ginkgolides A, B, and C and bilobalide in liquid and dry extracts of Ginkgo biloba extracts has been developed. Determinations made by employing capillary gas chromatography technique with FID detection were preceded by derivatization using BSTFA with TMCS addition at 120 degrees C. Cholesterol was used as an internal standard. Valid...