II. Rapid Extraction Method for Crops

1965 ◽  
Vol 48 (6) ◽  
pp. 1158-1160
Author(s):  
Randall R Watts ◽  
Robert W Storherr
Keyword(s):  
Ethyl Acetate ◽  
Pesticide Residues ◽  
Extraction Method ◽  
Organophosphate Pesticide ◽  
Rapid Extraction ◽  
Acetonitrile Concentration

Abstract An ethyl acetate extraction method for organophosphate pesticide residues on crop samples requires about 40 minutes for extraction and preparation of sample. This procedure eliminates the lengthy acetonitrile concentration and reduces the volume of solvent used in the acetonitrile procedure. Dimethoate, diazinon, Trithion, Guthion, Phosdrin, and parathion were easily extracted from field-sprayed kale by the ethyl acetate extraction method.

Collaborative Study of the Ethyl Acetate Extraction, Sweep Co-distillation Cleanup, and GLC Determination, Using Six Parent Organophosphate Pesticides

1968 ◽  
Vol 51 (3) ◽  
pp. 662-665 ◽  
Author(s):  
R W Storherr ◽  
R R Watts
Keyword(s):  
Ethyl Acetate ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Collaborative Study ◽  
Organophosphate Pesticides ◽  
Organophosphate Pesticide ◽  
Specific Group

Abstract Nine chemists in five laboratories collaborated in testing the combined rapid ethyl acetate extraction and sweep co-distillation cleanup method for multiple organophosphate pesticide residues in crops. Pesticides were detected by GLC with the potassium thermionic detector. The six pesticides studied were Diazinon, methyl parathion, malathion, parathion, ethion, and carbophenothion. Six crops—kale, carrots, lettuce, apples, potatoes, and strawberries—were divided into three groups, and each laboratory was selected to work with a specific group. With unknown fortification levels of 1.0 and 0.5 ppm, the collaborators obtained recoveries of 90+% at each level.

scholarly journals Determination of 17 Organophosphate Pesticide Residues in Mango by Modified QuEChERS Extraction Method Using GC-NPD/GC-MS and Hazard Index Estimation in Lucknow, India

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e96493 ◽  
Author(s):  
Ashutosh K. Srivastava ◽  
Satyajeet Rai ◽  
M. K. Srivastava ◽  
M. Lohani ◽  
M. K. R. Mudiam ◽  
...  
Keyword(s):  
Pesticide Residues ◽  
Extraction Method ◽  
Hazard Index ◽  
Organophosphate Pesticide ◽  
Modified Quechers ◽  
Index Estimation

Pesticide residues analysis in honey using ethyl acetate extraction method: validation and pilot survey in real samples

2015 ◽  
Vol 95 (10) ◽  
pp. 894-910 ◽  
Author(s):  
Despo Louca Christodoulou ◽  
Popi Kanari ◽  
Olympiada Kourouzidou ◽  
Maria Constantinou ◽  
Panayiota Hadjiloizou ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Method Validation ◽  
Pesticide Residues ◽  
Extraction Method ◽  
Real Samples ◽  
Pilot Survey

Simple and rapid extraction method of total egg lipids for determining organochlorine pesticides in the egg

1999 ◽  
Vol 830 (2) ◽  
pp. 473-476 ◽  
Author(s):  
Naoto Furusawa ◽  
Asako Ozaki ◽  
Miyuki Nakamura ◽  
Yukari Morita ◽  
Kunio Okazaki
Keyword(s):  
Organochlorine Pesticides ◽  
Extraction Method ◽  
Rapid Extraction

scholarly journals Pesticide residue in fishes from Rangpur

2016 ◽  
Vol 44 (1) ◽  
pp. 1-8
Author(s):  
Maria Zaman ◽  
Nasim Sultana ◽  
Mozaffar Husain ◽  
M Niamul Naser
Keyword(s):  
Public Health ◽  
Ethyl Acetate ◽  
Sulphuric Acid ◽  
Food Chain ◽  
Pesticide Residues ◽  
Organic Pollutant ◽  
Health Issues ◽  
Gas Chromatograph ◽  
Fish Samples ◽  
Northwestern Bangladesh

Pesticide residues, specially the persistent organic pollutant (POP) were analyzed from some fish species of Rangpur floodplain, Bangladesh. Fish samples were extracted with ethyl acetate, cleaned by sulphuric acid and analyzed by gas chromatograph and gas chromatograph-mass spectrometer. Presence of endrin was detected in Taki fish (Channa punctatus) samples. Traces of other pesticides were also evident. This confirms the use of banned pesticide in the northwestern Bangladesh. We discussed some consequences of public health issues if these contaminantspasses through in the higher food chain from the wetland ecosystem.Bangladesh J. Zool. 44(1): 1-8, 2016

scholarly journals Isolation of sea cucumbers’s (Holothuria atra) secondary metabolite using column-chromatography technique

2021 ◽  
Vol 869 (1) ◽  
pp. 012010
Author(s):  
S Agustina ◽  
S Bella ◽  
S Karina ◽  
I Irwan ◽  
M Ulfah
Keyword(s):  
Secondary Metabolites ◽  
Ethyl Acetate ◽  
Secondary Metabolite ◽  
Column Chromatography ◽  
Extraction Method ◽  
Sea Cucumber ◽  
Sea Cucumbers ◽  
Marine Chemistry ◽  
Holothuria Atra ◽  
Metabolite Content

Abstract Identification of sea cucumbers from Benteng Inong Balee, Aceh Besar and their phytochemistry screening were conducted in December 2020 to January 2021 at Laboratory of Marine Chemistry and Fisheries Biotechnology, Universitas Syiah Kuala. The purpose of this study was to identify the species of sea cucumbers and its secondary metabolite content using phytochemistry screening and column chromatography. The species of sea cucumbers that were identified was Holothuria atra. The extraction method used in sea cucumber extraction was maceration method, while the separation of secondary metabolites used column-chromatography with eluent of n-hexane : ethyl acetate (8:4). The results showed that secondary metabolites obtained from phytochemical tests were flavonoids, saponins and triterpenoids.

A Rapid Extraction Method for Acidic Drugs in Hemolyzed Blood

1983 ◽  
Vol 7 (3) ◽  
pp. 116-118 ◽  
Author(s):  
B. Ford ◽  
J. Vine ◽  
T.R. Watson
Keyword(s):  
Extraction Method ◽  
Rapid Extraction ◽  
Acidic Drugs

Method of Recognition and Feature Rapid Extraction about Multi-Objective Rounds Based on Rotating Scanning

2012 ◽  
Vol 152-154 ◽  
pp. 1840-1845
Author(s):  
Dao Hua Lu ◽  
Song Lian Xie ◽  
Jia Wang
Keyword(s):  
Hough Transform ◽  
Extraction Method ◽  
Contour Extraction ◽  
Transform Method ◽  
Scanning Method ◽  
Multi Objective ◽  
Rapid Extraction

To achieve the target features quick extraction, this paper uses a contour extraction method based on contour mark and outline of rotating scan target filling. It mainly introduces the principle and algorithm of Rand-omized Hough Transform method and rotating scanning method, uses a workpiece as an example to illustrate it with experiment.

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