GC chromatograph of OC and SP pesticides mixture with method used in present study Sr. no. Name Retention time (m) Sr. no. Name Retention time (m) 1α-

Slides:

Advertisements

Similar presentations

The greatness of a nation and its moral progress can be judged by the way its animals are treated -Mahatma Gandhi.

Advertisements

Mass Spectrometry.

Gas Chromatography, GC L.O.:  Explain the term: retention time.  Interpret gas chromatograms in terms of retention times and the approximate proportions.

FUNDAMENTALS OF AIR QUALITY. DEPOSITION LAYERS Sahara Dust Storm NASA Astronaut Photo.

Overview of Environmental Contamination in Lao PDR Dr. Kesiny Phomkeona Department of Chemistry Faculty of Science National University of Laos.

Možnosti evropského výzkumu v oblasti související s fytosanitární problematikou Jana Hajšlová Ústav chemie a analýzy potravin, VŠCHT Praha

GC-MS Gas Chromatography-Mass Spectrometry

What’s in my Vanilla? Cocaine in Money? An introduction to Atomic (Molecular) Masses and Mass Spectrometry (or GC/MS)

Gas Chromatography of Distillate CHEM 315 Week of November 1 st, 2010 Alexis Patanarut.

Mass Spectrometry Courtesy Purpose of Mass Spectrometry  Produces spectra of masses from the molecules in a sample of material, and.

Introduction to a 2-step analysis for persistent organic pollutants Peggy Krahn National Oceanic and Atmospheric Administration National Marine Fisheries.

Lecture 8. GC/MS.

Lecture 3 Organic Compounds. AcetaldehydeIsopropanol AcetoneChloroform MethanolTrichloroethanol EthanolDichloroethane Carbon terachlorideToluene BenzeneFormaldehyde.

1 April 7, 2009 C. Lu Monitoring the RPC Gas Mixture with a Gas Chromatograph C. Lu Princeton University.

1 Bisphenol-A Detection in Human Urine Megan Babcock Fall 2008.

Chemical Control: Insecticides

Lecture 8 Elementorganic Toxins. Determination Graphite furnace atomic absorption Cold Vapor Atomic absorption and Fluorescence ICP-MS HPLC-ICP-MS GC-MS.

Application of Comprehensive Two-Dimensional Gas Chromatography - Mass Spectrometry to Forensic Science Investigations Glenn S. Frysinger Richard B.

Pesticide Residues in Food Why we should be worried Parker Stevens.

Instant Notes Analytical Chemistry

Types of Chromatography Liquid chromatography versus gas chromatography? Applications? Volatile  GC Non-volatile  LC.

ENVIRONMENTAL ANALYSIS I. Solid Phase Extraction sorbent configurations – stacked phases.

Mass Spectrometry Mass spectrometry (MS) is not true “spectroscopy” because it does not involve the absorption of electromagnetic radiation to form an.

GCMS: gas chromatography and mass spectrometry

By, Blessy Babu. What is Gas Chromatography?  Gas spectroscopy is a technique used to separate volatile components in a mixture.  It is particularly.

POPs Monitoring in Japan – Fate and Behavior of POPs - Takeshi NAKANO, (Hyogo Pref. Inst. of Pub. Health & Env. Sci.) Minoru.

Herbicide Residues in Fish from McGarvey and Blue Creeks California Department of Fish and Game Pesticide Investigations Unit Rancho Cordova, California.

ECOLOGYCAL PURITY AND AUTHENTICITY OF BULGARIAN ORIENTAL TOBACCO World Tobacco North America– The Future Supply of Leaf Tobacco Richmond, Virginia, 05/12/2015.

7000A GC-QQQ Applications Pesticides in Foods (3).

Tobacco Quota Buyout Impacts Workshop Washington, DC September 20, 2005.

Menu A gaseous sample compound is injected into the mass spectrometer.

Menu We will look at some of the major peaks in the mass spectrum of butane.

Pesticides in Soil: Assessment and Soil Management Considerations 2015 SAM FALL FORUM SITE ASSESSMENT AND MITIGATION PROGRAM October 13, 2015.

Hydroxy-capric acid Metabolite 2 Hydroxy-capric acid Metabolite 3 Hydroxy-capric acid Metabolite 1 Supplemental Figure 2: GC-MS analyses of metabolites.

Low lightHigh light High light response in Arabidopsis thaliana 4 days 1100 transcripts change Anthocyanin light response mutant.

Chemistry 2412 L Dr. Sheppard

Gas Chromatography Refractive Index Polarimetry Next Lecture: Lecture Problem 8 Due Next Thursday: Quiz 7 in Lecture Next Week’s Office Hours: Tuesday.

1tables and figures Supplementary Table 1 Genes potentially implicated in Medicago truncatula triterpenoid biosynthesis correlated with bAS NameProbeset.

THE MYSTERY BEHIND THE DEATH OF A BRIDE By R.S. Verma, R.M. Tripathi and A.K.Dalela Central Forensic Science Laboratory, DFS, MHA, Govt. of India, Sec.36-A,

STRUCTURAL DETERMINATION MASS SPECTRUM (MS) LAB 12.

3M Drug Delivery Systems 3 Introduction A family of hydrofluoroalkane-compatible excipients based on oligomeric lactic acid (OLA) has been proposed for.

Evolution GC-MS/MS: Pesticide analysis in canola oil Evolution GC-MS/MS: Pesticide analysis in canola oil Vivian Watts 1, Ingo Christ 1, Mark Misunis 2.

MASS SPECTROSCOPY (with Gas Chromatography). 5 Stages of the process – where do they happen? 1.Sample vaporised 2.Sample ionised 3.Ions accelerated 4.Ions.

Xinhong Wang 1, Heyang Li 2, Yusheng Zhang 2 1. Environmental Science Research Center, Xiamen University, Xiamen, , P.R.China 2. Third Institute.

Organics analysis in marine sediment and biota

Could modern use pesticides impact prawn hatcheries? OCEANS AND ATMOSPHERE Sharon Hook| Senior Research Scientist 2 August 2016.

Chem. 133 – 4/27 Lecture.

ISTITUTO ZOOPROFILATTICO SPERIMENTALE

Accelerating Research in Life Sciences

The use of cyclohexanone as a “derivatizing” reagent for the GC–MS detection of amphetamines and ephedrines in seizures and the urine B.M. El-Haj, A.M.

Sensitive and specific multiresidue methods for the determination of pesticides of various classes in clinical and forensic toxicology Eric Lacassie,

Lecture 23 Quiz 6 Average = 72% (36 out of 50) Mass Spectrometry

Substances that kill pests

THEME: WATER AND ENERGY FOR INCLUSIVE GROWTH

Pesticide Market Access & Regulatory Management in Saudi Arabia

Mass Spectrometry Courtesy

Gas Chromatography.

(A) (E) (B) (C) (F) (D) Control HLM MLM Chemical synthesis M6

Presence of L-Canavanine in Hedysarum alpinum Seeds and Its Potential Role in the Death of Chris McCandless Jon Krakauer, BA, Ying Long, PhD, Andrew.

Reverse-phase HPLC chromatograms obtained from analysis of a 24-h human urine sample after consumption of cooked watercress (a) and raw watercress (b).

HPLC-VIS chromatograms of extracts of authentic mirtocyan (A) and of plasma (B), urine (C), or colorectal tumor tissue (D) from patients who received 1.4.

Mass Spectrometry Courtesy

Epidemiology of Acute Pesticide Poisoning in the Philippines

Acetylcholine, Run 17, 148->87 m/z

Gas Chromatography.

Compound is first vaporized and converted into ions, which are then separated and detected. Electron Impact (EI) Mass Spectrometry 1.

Electron Capture Detectors

Pinene is produced in malaria parasites by de novo isoprenoid biosynthesis. Pinene is produced in malaria parasites by de novo isoprenoid biosynthesis.

Inter-day precision(%)

Presentation transcript:

GC chromatograph of OC and SP pesticides mixture with method used in present study Sr. no. Name Retention time (m) Sr. no. Name Retention time (m) 1α- HCH β-endosulfan β- HCH p,p’ DDD γ –HCH Endosulfan sulphate δ- HCH p,p’ DDT Heptachlor Cyhalothrin Aldrin Permethrin Fipronil Cyfluthrin Butachlor Cypermethrin p,p’ DDE Fenvalerate o,p’ DDD Deltamethrin Endrin24.85

Organophosphorus pesticides Peak no. Name of pesticideRetention time (min.) 1Monocrotofos Dimethoate Parathion methyl Malathion Chlorpyrifos Profenophos Ethion Triazophos Phosalone GC chromatograph of OP pesticides mixture with method used in present study.

GroupRetention time window (min.)m/z (compound) , 164, 127 (Monocrotofos) , 183, 181 (α-HCH), 125, 87 (Dimethoate) , 183, 181 (β-HCH, γ-HCH) , 183, 181 (δ-HCH), 263, 233, 125 (Parathion methyl) , 158 (Malathion) , 286, 97 (Chlorpyrifos) , 272, 100 (Heptachlor) , 263, 261 (Aldrin) , 250, 139 (Butachlor), 339, 139 (Profenophos) , 153 (Ethion) , 246, 241 (p,p’ DDE) , 237, 235 (o,p’ DDD), 81, 263 (Endrin) , 237, 195 (β-endosulfan), 235, 178, 165 (p,p’ DDD) , 387, 272 (Endosulfan sulphate), 237, 235, 212 (p,p’ DDT) , 197, 181 (Cyhalothrin) , 206 (Permethrin), 163 (Cyfluthrin), 181, 163 (Cypermethrin) , 167, 125 (Fenvalerate) , 182 (Deltamethrin) Retention time windows and mass to charge ratios (m/z) used for selected ion monitoring in GCMS m/z- mass to charge ratio

GC and GCMS chromatographs of pesticides residues detected in breast milk samples

Figure: GC chromatograms of γ-HCH (A) detected in milk sample, GCMS (B), ion spectrum of sample (C) and standard (D) m/z (C) uVuV (x10,000) E:\GC DATA/ γ-HCH Sample Chromatogram 1// γ-HCH (x1,000) (2.43) (1.98) (1.00) TIC 1/Gamma-HCH/ (B)(A) (D) Voltage Time in minutes Voltage

min uV(x100,000) E:\GC DATA/pp DDE Chromatogram 1/pp DDE/ (x1,000) (1.77) (1.20) (4.83) TIC 1/pp DDE/ (x1,000) (x1,000) Voltage Time in minutes m/z (D) (A) (C) (B) Figure: GC chromatograms of pp DDE (A) detected in milk sample, GCMS (B), ion spectrum of sample (C) and standard (D)

(x10,000) (2.19) (6.38) (6.67) TIC 1/pp DDD/ (x1,000) Voltage m/z 1/pp DDD/ min uV (x100,000) E:\GC DATA\pp DDD Chromatogram Voltage Time in minutes (A) (B) (C) (D) Figure: GC chromatograms of pp DDD (A) detected in milk sample, GCMS (B), ion spectrum of sample (C) and standard (D)